S Model Entire Manual
Thank you for selecting a Manitowoc Ice Machine, the dependability leader in ice making equipment and related
products. With proper installation, care and maintenance, your new Manitowoc Ice Machine will provide you with many
years of reliable and economical performance.
S Model Ice Machines
Installation Use and Care Manual
08/2006
This manual is updated as new information and models are released. Visit our website for the latest manual.
www.manitowocice.com
Safety Notices
As you work on an S Model Series Ice Machine, be sure to pay close attention to the safety notices in this
manual. Disregarding the notices may lead to serious injury and/or damage to the ice machine.
Throughout this manual, you will see the following types of safety notices: Procedural Notices
As you work on an S Model Series Ice Machine, be sure to read the procedural notices in this manual. These
notices supply helpful information which may assist you as you work.
Throughout this manual, you will see the following types of procedural notices:
NOTE: Text set off as a Note provides you with simple, but useful, extra information about the procedure you
are performing.
Read These Before Proceeding:
PERSONAL INJURY POTENTIAL
Do not operate equipment that has been misused, abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
Text in a Warning box alerts you to a potential personal injury situation. Be sure to read the
Warning statement before proceeding, and work carefully.
Text in a Caution box alerts you to a situation in which you could damage the ice machine. Be sure
to read the Caution statement before proceeding, and work carefully.
Important
Text in an Important box provides you with information that may help you perform a procedure
more efficiently. Disregarding this information will not cause damage or injury, but it may slow you down as you work.
Proper installation, care and maintenance are essential for maximum ice production and troublefree
operation of your Manitowoc Ice Machine. Read and understand this manual. It contains
valuable care and maintenance information. If you encounter problems not covered by this manual, do
not proceed, contact Manitowoc Ice, Inc. We will be happy to provide assistance.
Routine adjustments and maintenance procedures outlined in this manual are not covered by the
warranty.
Part Number 000000966 1
Table of Contents
Section 1
General Information
Model Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
How to Read a Model Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Ice Cube Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Bin Caster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Ice Bagger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Guardian Sachet Packets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Arctic Pure Water Filter System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Manitowoc Cleaner and Sanitizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
AuCS® Automatic Cleaning System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Dispenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Model/Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Owner Warranty Registration Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Warranty Coverage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Labor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Exclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Authorized Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Section 2
Installation Instructions
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Ice Machine Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
S320/S420 Air and Water-Cooled Ice Machines . . . . . . . . . . . . . . . . . . . . 2-1
S600 Air and Water-Cooled Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
S600 Remote Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
S300/S450/S500/S850/s1000/S1200 Air and Water-Cooled Ice Machines 2-3
S500/S850/S1000 Remote Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
S1400 / S1600 / S1800 Air and Water-Cooled Ice Machines . . . . . . . . . . . 2-5
S1400 / S1600 / S1800 Remote Ice Machines . . . . . . . . . . . . . . . . . . . . . . 2-5
Ice Storage Bin Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
22 Inch (56 cm) Ice Storage Bins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
30 inch (76 cm) Ice Storage Bins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
48 Inch (130 cm) Ice Storage Bins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Large Capacity Ice Storage Bin Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
30 Inch (76 cm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
48 Inch (122 cm) & 60 Inch (152 cm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Remote Condenser Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
JC0495/JC0895/JC1395 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Location of Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Ice Machine Heat of Rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Removing Drain Plug and Leveling the Ice Storage Bin . . . . . . . . . . . . . . . . 2-10
Air-Cooled Baffle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Electrical Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Minimum Circuit Ampacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Maximum Breaker Size & Minimum Circuit Amperage Chart . . . . . . . . . . . 2-12
Table of Contents (continued)
2 Part Number 000000966
Self-Contained Electrical Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Self Contained Ice Machine 115/1/60 or 208-230/1/60 . . . . . . . . . . . . . . . . 2-13
Self Contained Ice Machine 208-230/3/60 . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Self Contained Ice Machine 230/1/50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
For United Kingdom Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Remote Electrical Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Remote Ice Machine With Single Circuit Model Condenser
115/1/60 or 208-230/1/60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Remote Ice Machine With Single Circuit Model Condenser
208-230/3/60 or 380-415/3/50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Remote Ice Machine With Single Circuit Model Condenser
230/1/50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Water Supply and Drain Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Water Inlet Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Drain Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Cooling Tower Applications (Water-Cooled Models) . . . . . . . . . . . . . . . . . . . 2-15
Water Supply and Drain Line Sizing/Connections . . . . . . . . . . . . . . . . . . . . 2-16
Remote Condenser/Line Set Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Remote Ice Machines Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Guidelines for Routing Line Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Calculating Remote Condenser Installation Distances . . . . . . . . . . . . . . . . 2-19
Lengthening or Reducing Line Set Lengths . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Connecting A Line Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Remote Receiver Service Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Remote Ice Machine Usage with Non-Manitowoc Multi-Circuit Condensers 2-21
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Head Pressure Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Internal Condenser Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Condenser DT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Quick Connect Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Non-Manitowoc Multi-Circuit Condenser Sizing Chart . . . . . . . . . . . . . . . . . 2-22
Installation Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Additional Checks for Remote Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Before Starting the Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
AuCS® Automatic Cleaning System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Section 3
Ice Machine Operation
Component Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Sequence Of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Initial Start-Up or Start-Up After Automatic Shut-Off . . . . . . . . . . . . . . . . . . 3-2
Freeze Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Harvest Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Automatic Shut-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Safety Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Warm Water Rinse Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Operational Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Water Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Ice Thickness Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Harvest Sequence Water Purge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Table of Contents (continued)
Part Number 000000966 3
Section 4
Maintenance
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Interior Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Removing the Front Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Water Inlet Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Water Dump Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Exterior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Cleaning the Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Water-Cooled Condenser and Water Regulating Valve . . . . . . . . . . . . . . . . . 4-9
Guardian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Guardian Sachet Replacement Frequency . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Sachet Installation/Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Clean Up Procedure for Damaged Sachet Packet . . . . . . . . . . . . . . . . . . . 4-10
Removal from Service/Winterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Section 5
Before Calling For Service
Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Safety Limit Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Table of Contents (continued)
4 Part Number 000000966
Section 1 General Information
Part Number 000000966 1-1
Section 1
General Information
Model Numbers
This manual covers the following models:
NOTE: Model numbers ending in 3 indicate a 3-phase
unit. Example: SY1004A3
How to Read a Model Number
Ice Cube Sizes Self-Contained Air-Cooled Self-Contained Water-Cooled Remote
PERSONAL INJURY POTENTIAL
Do not operate equipment that has been misused,
abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
PERSONAL INJURY POTENTIAL
Remove all ice machine panels before lifting and installing.
General Information Section 1
1-2 Part Number 000000966
Accessories
Contact your Manitowoc distributor for these optional accessories:
BIN CASTER Replaces standard legs.
ICE BAGGER
Maximize profits from bagged ice sales with this convenient accessory. This sturdy unit rests on the bin
door frame, and adapts for left or right side filling.
GUARDIAN™ SACHET PACKETS
Guardian sachet packets release chlorine dioxide on a controlled basis to inhibit the growth of bacteria and slime.
Guardian sachet packets are available through your local Manitowoc Ice Machine dealer.
ARCTIC PURE™ WATER FILTER SYSTEM
Engineered specifically for Manitowoc ice machines, This water filter is an efficient, dependable, and
affordable method of inhibiting scale formation, filtering sediment, and removing chlorine taste and odor.
MANITOWOC CLEANER AND SANITIZER
Manitowoc Ice Machine Cleaner and Sanitizer are available in convenient 16 oz. (473 ml) bottles. These
are the only cleaner and sanitizer approved for use with Manitowoc products.
AUCS® AUTOMATIC CLEANING SYSTEM
This accessory reduces equipment cleaning expense. The AuCS® accessory monitors ice making cycles and
initiates cleaning procedures automatically.
DISPENSER
A counter-top dispenser is ideal for cafeterias and many types of self-service facilities. Manitowoc auto-fill, floorstanding
ice dispensers meet the strict sanitary requirements of the food service, lodging and health care industries.
Cleaner Part Number Sanitizer Part Number
16 ounce Bottle - 94-0546-3 16 ounce Bottle - 94-0565-3
AuCS®-SO - 94-0546-3 AuCS®-SO - 94-0565-3
AuCS®-SI - 40-1326-3 AuCS®-SI - 40-1327-3
All Manitowoc ice machines require the ice storage system (bin, dispenser, etc.) to incorporate an ice deflector.
48” wide S Model ice machines require addingManitowoc Ice Deflector Kit K00349 when installing
with non-Manitowoc ice storage systems. 30” wide S Model ice machines require adding Manitowoc Ice Deflector Kit K00347 when installing with non-Manitowoc ice storage systems.
Prior to using a non-Manitowoc ice storage system with other Manitowoc ice machines, contact the
manufacturer to assure their ice deflector is compatible with Manitowoc ice machines.
These numbers are required when requesting information from your local Manitowoc distributor, or Manitowoc Ice, Inc.
The model and serial number are listed on the MODEL/SERIAL NUMBER DECAL affixed to the ice machine,
remote condenser and storage bin. Model/Serial Number Location
Owner Warranty Registration Card
GENERAL
The packet containing this manual also includes warranty information. Warranty coverage begins the day
your new ice machine is installed. If you do not return your OWNER WARRANTY
REGISTRATION CARD, Manitowoc will use the date of sale to the Manitowoc Distributor as the first day of
warranty coverage for your new ice machine.
Warranty Coverage
GENERAL
The following Warranty outline is provided for your convenience. For a detailed explanation, read the
warranty bond shipped with each product. Contact your local Manitowoc Distributor, Manitowoc Ice,
Inc. or visit our website at www.manitowocice.com if you need further warranty information.
PARTS
1. Manitowoc warrants the ice machine against defects in materials and workmanship, under normal use
and service for three (3) years from the date of original installation.
2. The evaporator and compressor are covered by an additional two (2) year (five years total) warranty
beginning on the date of the original installation.
LABOR
1. Labor required to repair or replace defective components is covered for three (3) years from the
date of original installation.
2. The evaporator is covered by an additional two (2) year (five years total) labor warranty beginning on
the date of the original installation.
EXCLUSIONS
The following items are not included in the ice machine’s warranty coverage:
1. Normal maintenance, adjustments and cleaning.
2. Repairs due to unauthorized modifications to the ice machine or use of non-standard parts without
prior written approval from Manitowoc Ice, Inc.
3. Damage caused by improper installation of the ice machine, electrical supply, water supply or drainage,
or damage caused by floods, storms, or other acts of God.
4. Premium labor rates due to holidays, overtime, etc.; travel time; flat rate service call charges;
mileage and miscellaneous tools and material charges not listed on the payment schedule.
Additional labor charges resulting from the inaccessibility of equipment are also excluded.
5. Parts or assemblies subjected to misuse, abuse, neglect or accidents.
6. Damage or problems caused by installation, cleaning and/or maintenance procedures inconsistent with the technical instructions provided in this manual.
7. This product is intended exclusively for commercial application. No warranty is extended for personal, family,
or household purposes.
AUTHORIZED WARRANTY SERVICE
To comply with the provisions of the warranty, a refrigeration service company qualified and
authorized by a Manitowoc distributor, or a Contracted Service Representative must perform the warranty repair.
NOTE: If the dealer you purchased the ice machine from is not authorized to perform warranty service, contact
your Manitowoc distributor or Manitowoc Ice, Inc. for the name of the nearest authorized service representative.
Service Calls
Normal maintenance, adjustments and cleaning as outlined in this manual are not covered by the
warranty. If you have followed the procedures listed on page 5-1 of this manual, and the ice machine still does
not perform properly, call your authorized service company.
Important
Complete and mail the OWNER WARRANTY REGISTARATION CARD as soon as possible to
validate the installation date.
Important
This product is intended exclusively for commercial application. No warranty is extended for personal,
family, or household purposes.
Section 2 Installation Instructions
These instructions are provided to assist the qualified installer. Check your local Yellow Pages for the name of
the nearest Manitowoc distributor, or call Manitowoc Ice, Inc. for information regarding start-up services.
Ice Machine Dimensions
S320/S420 AIR AND WATER-COOLED ICE MACHINES
Important
Failure to follow these installation guidelines may affect warranty coverage.
2-6 Part Number 000000966
Ice Storage Bin Dimensions
22 INCH (56 CM) ICE STORAGE BINS
30 INCH (76 CM) ICE STORAGE BINS
48 INCH (130 CM) ICE STORAGE BINS
Bin Model Dimension A Dimension B
B320 34.0 in (86.3 cm) 32.0 in (81.3 cm)
B420 34.0 in (86.3 cm) 44.0 in (111.7 cm)
Bin Model Dimension A Dimension B
B170 29.5 in (74.9 cm) 19.1 in (48.5 cm)
B400 34.0 in (86.3 cm) 32.0 in (81.3 cm)
B570 34.0 in (86.3 cm) 44.0 in (111.7 cm)
All Manitowoc ice machines require the ice storage system (bin, dispenser, etc.) to incorporate an ice deflector.
The S600, S850, S1000 ice machines require adding Manitowoc Ice Deflector Kit K00347 when installing
with non-Manitowoc ice storage systems. Prior to using a non-Manitowoc ice storage system
with other Manitowoc ice machines, contact the manufacturer to assure their ice deflector is
compatible with Manitowoc ice machines.
30” large capacity ice storage bins must be attached to the wall with the bracket provided with the bin.
Bin Model Dimension A (Width) Dimension B (Height)
B750 30 in. (76.2 cm.) 58 in. (147.3 cm.)
B1050 30 in. (76.2 cm.) 78 in. (198.1 cm.)
The bin drain is exactly in the center of the bin.
Bin Model Dimension A (Width) Dimension B (Height)
B1100 48 in. (121.9 cm.) 55.0 in. (139.7 cm.)
B1400 60 in. (152.4 cm.) 55.0 in. (139.7 cm.)
The bin drain is exactly in the center of the bin.
The location selected for the ice machine must meet the following criteria. If any of these criteria are not met,
select another location.
• The location must be free of airborne and other contaminants.
• The air temperature must be at least 35°F (1.6°C), but must not exceed 110°F (43.4°C).
• Remote air cooled - The air temperature must be at least -20°F (-29°C), but must not exceed 120°F (49°C)
• The location must not be near heat-generating equipment or in direct sunlight and must be protected from weather.
• The location must not obstruct air flow through or around the ice machine. Refer to the chart below for
clearance requirements.
Ice Machine Heat of Rejection
Ice machines, like other refrigeration equipment, reject heat through the condenser. It is helpful to know the
amount of heat rejected by the ice machine when sizing air conditioning equipment where self-contained aircooled
ice machines are installed.
This information is also necessary when evaluating the benefits of using water-cooled or remote condensers to
reduce air conditioning loads. The amount of heat added to an air conditioned environment by an ice machine
using a water-cooled or remote condenser is negligible. Knowing the amount of heat rejected is also important
when sizing a cooling tower for a water-cooled condenser. Use the peak figure for sizing the cooling tower.
*There is no minimum clearance required for water-cooled or remote
ice machines. This value is recommended for efficient operation and servicing only.
The ice machine must be protected if it will be subjected to temperatures below 32°F (0°C).
Failure caused by exposure to freezing temperatures is not covered by the warranty. See
“Removal from Service/Winterization”.
Series Ice Machine
Heat of Rejection B.T.U./Hour Air Conditioning
Because the heat of rejection varies during the ice making cycle, the figure shown is an average.
Removing Drain Plug and Leveling the Ice Storage Bin
1. Remove threaded plug from drain fitting.
2. Screw the leveling legs onto the bottom of the bin.
3. Screw the foot of each leg in as far as possible.
4. Move the bin into its final position.
5. Level the bin to assure that the bin door closes and seals properly. Use a level on top of the bin. Turn the
base of each foot as necessary to level the bin.
6. Inspect bin gasket prior to ice machine installation. (Manitowoc bins come with a closed cell foam
gasket installed along the top surface of the bin.)
7. Remove all panels from ice machine before lifting. Remove both front panels, top cover, left and right side panels.
8. Install ice machine on bin.
Leveling Leg and Foot
Air-Cooled Baffle
SELF-CONTAINED AIR-COOLED ONLY
The air-cooled baffle prevents condenser air from recirculating. To install:
1. Remove the back panel screws next to the condenser.
2. Align the mounting holes in the air baffle with the screw holes and reinstall the screws.
The legs must be screwed in tightly to prevent them from bending.
The maximum allowable voltage variation is ±10% of the
rated voltage at ice machine start-up (when the electrical load is highest).
All electrical work, including wire routing and grounding, must conform to local, state and national electrical
codes. The following precautions must be observed:
• The ice machine must be grounded.
• A separate fuse/circuit breaker must be provided for each ice machine.
• A qualified electrician must determine proper wire size dependent upon location, materials used and
length of run (minimum circuit ampacity can be used to help select the wire size).
• The maximum allowable voltage variation is +/-10 of the rated voltage at ice machine start-up (when the
electrical load is highest).
• Check all green ground screws in the control box and verify they are tight before starting the ice machine.
Incorrect polarity can lead to erratic ice machine operation and a safety issue. This is especially critical on
230 volt / 50 cycle ice machines.
Fuse/Circuit Breaker
A separate fuse/circuit breaker must be provided for each ice machine. Circuit breakers must be H.A.C.R.
rated (does not apply in Canada).
MINIMUM CIRCUIT AMPACITY
The minimum circuit ampacity is used to help select the wire size of the electrical supply. (Minimum circuit
ampacity is not the ice machine’s running amp load.) The wire size (or gauge) is also dependent upon
location, materials used, length of run, etc., so it must be determined by a qualified electrician.
ELECTRICAL REQUIREMENTS
Refer to Ice Machine Model/Serial Plate for voltage/ amperage specifications.
GROUND FAULT CIRCUIT INTERUPTER
Ground Fault Circuit Interupter (GFCI/GFI) protection is a system that shuts down the electric circuit (opens it)
when it senses an unexpected loss of power, presumably to ground. Manitowoc Ice, Inc. does not
recommend the use of a GFCI/GFI circuit protection with our equipment. If code requires the use of a GFCI/GFI
then you must follow the local code. The circuit must be dedicated, sized properly and there must be a panel
GFCI/GFI breaker. We do not recommend GFCI/GFI outlets as they are known for more intermittent nuisance
trips than panel breakers.
All wiring must conform to local, state and national codes.
The ice machine must be grounded in accordance with national and local electrical codes.
Important
Observe correct polarity of incoming line voltage.
MAXIMUM BREAKER SIZE & MINIMUM CIRCUIT AMPERAGE CHART
(* indicates preliminary data)
MINIMUM POWER CORD SPECIFICATIONS
If a power cord is used the wire size to the receptacle is dependant upon location, materials used, length of run, etc.,
so it must be determined by a qualified electrician. Local, state or national requirements will supersede our minimum
requirements. Ice Machine Voltage Phase Cycle Air-Cooled Water Cooled Remote
Maximum Fuse/Circuit Breaker Minimum Circuit Amps
These diagrams are not intended to show proper wire routing, wire sizing, disconnects, etc., only the
correct wire connections. All electrical work, including wire routing and
grounding, must conform to local, state and national electrical codes.
Though wire nuts are shown in the drawings, the ice machine field wiring connections may use either
wire nuts or screw terminals.
For United Kingdom Only
As the colors of the wires in the mains lead of the appliance may not correspond with the colored markings
identifying the terminals in your plug, proceed as follows:
• The wire which is colored green and yellow must be connected to the terminal in the plug which is marked with
the letter E or by the earth ground symbol or colored green or green and yellow.
• The wire colored blue must be connected to the terminal which is marked with the letter N or colored black.
• The wire colored brown must be connected to the terminal which is marked with the letter L or colored red.
Installation Instructions Section 2
REMOTE ICE MACHINE
WITH SINGLE CIRCUIT MODEL CONDENSER
115/1/60 OR 208-230/1/60
REMOTE ICE MACHINE
WITH SINGLE CIRCUIT MODEL CONDENSER
208-230/3/60 OR 380-415/3/50
REMOTE ICE MACHINE
WITH SINGLE CIRCUIT MODEL CONDENSER
These diagrams are not intended to show proper wire routing, wire sizing, disconnects, etc., only the
correct wire connections. All electrical work, including wire routing and
grounding, must conform to local, state and national electrical codes.
Though wire nuts are shown in the drawings, the ice machine field wiring connections may use either
wire nuts or screw terminals.
F2 wire is located in the compressor compartment behind the control box. The wire is labeled F2 and
capped with a wire nut.
Water Supply and Drain Requirements
WATER SUPPLY
Local water conditions may require treatment of the
water to inhibit scale formation, filter sediment, and
remove chlorine odor and taste.
WATER INLET LINES
Follow these guidelines to install water inlet lines:
• Do not connect the ice machine to a hot water supply. Be sure all hot water restrictors installed for
other equipment are working. (Check valves on sink faucets, dishwashers, etc.)
• If water pressure exceeds the maximum recommended pressure (80 psi), obtain a water
pressure regulator from your Manitowoc distributor.
• Install a water shut-off valve for both the ice making and condenser water lines.
• Insulate water inlet lines to prevent condensation.
DRAIN CONNECTIONS
Follow these guidelines when installing drain lines to prevent drain water from flowing back into the ice
machine and storage bin:
• Drain lines must have a 1.5 inch drop per 5 feet of run (2.5 cm per meter), and must not create traps.
• The floor drain must be large enough to accommodate drainage from all drains.
• Run separate bin and ice machine drain lines. Insulate them to prevent condensation.
• Vent the bin and ice machine drain to the atmosphere. Do not vent the condenser drain on water-cooled models.
Cooling Tower Applications
(Water-Cooled Models)
A water cooling tower installation does not require modification of the ice machine. The water regulator
valve for the condenser continues to control the refrigeration discharge pressure.
It is necessary to know the amount of heat rejection, and the pressure drop through the condenser and water
valves (inlet and outlet) when using a cooling tower on an ice machine.
• Water entering the condenser must not exceed 90°F (32.2°C).
• Water flow through the condenser must not exceed 5 gallons (19 liters) per minute.
• Allow for a pressure drop of 7 psi (48 kPA) between the condenser water inlet and the outlet of the ice machine.
• Water exiting the condenser must not exceed 110°F (43.3°C).
Important
If you are installing a Manitowoc Arctic Pure™ water filter system, refer to the Installation Instructions
supplied with the filter system for ice making water inlet connections.
Do not apply heat to water valve inlet fitting. This will damage plastic water inlet connection.
IMPORTANT
The Commonwealth of Massachusetts requires that all water-cooled models must be connected only to a closed
loop, cooling tower system.
WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS
Refer to “Ice Machine Dimensions” at the beginning of Section 2 for the exact locations of inlets and drains for the model you are working on.
Typical Water Supply Drain Installation
Plumbing must conform to state and local codes.
Location Water Temperature Water Pressure Ice Machine Fitting Tubing Size Up to Ice Machine Fitting Ice Making
PLASTIC FITTING ON OPPOSITE SIDE DO NOT APPLY HEAT OPEN, TRAPPED AND VENTED DRAIN
DO NOT TRAP DRAIN LINE, LEAVE AIR GAP BETWEEN DRAIN TUBE AND DRAIN
3/8” FPT ICE MAKING WATER INLET FITTING, PLASTIC FITTING ON OPPOSITE SIDE DO NOT
APPLY HEAT 1/2” FPT CONDENSER WATER DRAIN (WATER COOLED UNITS ONLY)
3/8” FPT CONDENSER WATER INLET (WATER COOLED UNITS ONLY 1/2” CPVC SOCKET AUXILLARY BASE DRAIN
Remote Condenser/Line Set Installation
REMOTE ICE MACHINES
REFRIGERANT CHARGE
Each remote ice machine ships from the factory with a refrigerant charge appropriate for installation with line
sets of up to 50' (15.25 m). The serial tag on the ice machine indicates the refrigerant charge.
Additional refrigerant may be required for installations using line sets between 50' and 100’ (15.25-30.5 m)
long. If additional refrigerant is required, refer to the chart below for the correct amount to be added.
If remote line set length is between 50' and 100' (15.25- 30.5 m), add additional refrigerant to the nameplate charge.
Refer to the Installation Instructions in Installation Use and Care Manual for the model being worked on.
Tubing length: ______________________________
Refrigerant added to nameplate: ________________
New total refrigerant charge: ___________________
Potential Personal Injury Situation The ice machine contains refrigerant charge.
Installation of the line sets must be performed by a properly trained and EPA certified refrigeration
technician aware of the dangers of dealing with refrigerant charged equipment.
Never add more than nameplate charge to the refrigeration system for any application.
Condensers must be mounted horizontally with the fan motor on top.
Remote condenser installations consist of vertical and horizontal line sets between the ice machine and the
condenser. When combined, they must fit within approved specifications. The following guidelines,
drawings and calculation methods must be followed to verify a proper remote condenser installation.
GUIDELINES FOR ROUTING LINE SETS
First, cut a 2.5" (6.35 cm) circular hole in the wall or roof for tubing routing. The line set end with the 90° bend will
connect to the ice machine. The straight end will connect to the remote condenser.
Follow these guidelines when routing the refrigerant lines. This will help insure proper performance and
service accessibility.
1. Optional - Make the service loop in the line sets (as shown below). This permits easy access to the ice
machine for cleaning and service. Do not use hard rigid copper at this location.
2. Required - Do not form traps in the refrigeration lines (except the service loop). Refrigerant oil must be
free to drain toward the ice machine or the condenser. Route excess tubing in a supported
downward horizontal spiral (as shown below). Do not coil tubing vertically.
3. Required - Keep outdoor refrigerant line runs as short as possible.
The 60 month compressor warranty (including the 36 month labor replacement warranty) will not apply
if the remote ice machine is not installed according to specifications.
This warranty also will not apply if the refrigeration system is modified with a condenser, heat reclaim
device, or other parts or assemblies not manufactured by Manitowoc Ice, Inc., unless specifically approved in writing by Manitowoc Ice, Inc.
CALCULATING REMOTE CONDENSER INSTALLATION DISTANCES
Line Set Length
The maximum length is 100' (30.5 m). The ice machine compressor must have the proper oil
return. The receiver is designed to hold a charge sufficient to operate the ice machine in ambient
temperatures between -20°F (-29°C) and 120°F (49°C), with line set lengths of up to 100' (30.5 m).
Line Set Rise/Drop
The maximum rise is 35' (10.7 m).
The maximum drop is 15' (4.5 m).
Calculated Line Set Distance
The maximum calculated distance is 150' (45.7 m).
Line set rises, drops, horizontal runs (or combinations of these) in excess of the stated maximums will exceed
compressor start-up and design limits. This will cause poor oil return to the compressor.
Make the following calculations to make sure the line set layout is within specifications.
1. Insert the measured rise into the formula below. Multiply by 1.7 to get the calculated rise.
(Example: A condenser located 10 feet above the ice machine has a calculated rise of 17 feet.)
2. Insert the measured drop into the formula below. Multiply by 6.6 to get the calculated drop.
(Example. A condenser located 10 feet below the ice machine has a calculated drop of 66 feet.)
3. Insert the measured horizontal distance into the formula below. No calculation is necessary.
4. Add together the calculated rise, calculated drop, and horizontal distance to get the total calculated
distance. If this total exceeds 150' (45.7 m), move the condenser to a new location and perform the
calculations again.
Maximum Line Set Distance Formula
If a line set has a rise followed by a drop, another rise cannot be made. Likewise, if a line set has a
drop followed by a rise, another drop cannot be made.
Step 1. Measured Rise (35' [10.7 m] Maximum) ______ x 1.7 = _______ Calculated Rise
Step 2. Measured Drop (15' [4.5 m] Maximum) ______ x 6.6 = _______ Calculated Drop
Step 3. Measured Horizontal Distance (100' [30.5 m] Maximum) _______ Horizontal Distance
Step 4. Total Calculated Distance 150' (45.7 m) _______ Total Calculated Distance
LENGTHENING OR REDUCING LINE SET LENGTHS
In most cases, by routing the line set properly, shortening will not be necessary. When shortening or
lengthening is required, do so before connecting the line set to the ice machine or the remote condenser. This
prevents the loss of refrigerant in the ice machine or condenser.
The quick connect fittings on the line sets are equipped with Schraeder valves. Use these valves to recover any
vapor charge from the line set. When lengthening or shortening lines follow good refrigeration practices,
purge with nitrogen and insulate all tubing. Do not change the tube sizes. Evacuate the lines and place
about 5 oz (143g) of vapor refrigerant charge in each line.
CONNECTING A LINE SET
1. Remove the dust caps from the line set, condenser and ice machine.
2. Apply refrigeration oil to the threads on the quick disconnect couplers before connecting them to the condenser.
3. Carefully thread the female fitting to the condenser or ice machine by hand.
4. Tighten the couplings with a wrench until they bottom out.
5. Turn an additional 1/4 turn to ensure proper brassto- brass seating. Torque to the following specifications:
6. Check all fittings and valve caps for leaks.
7. Make sure Schraeder cores are seated and Schraeder caps are on and tight.
REMOTE RECEIVER SERVICE VALVE
The receiver service valve is closed during shipment. Open the valve prior to starting the ice machine.
1. Remove the top and left side panels.
2. Remove the receiver service valve cap.
3. Backseat (open) the valve.
4. Reinstall the cap and panels.
Liquid Line Discharge Line Backseating the Receiver Service Valve
Remote Ice Machine Usage with Non-Manitowoc Multi-Circuit Condensers
WARRANTY
The sixty (60) month compressor warranty, including thirty six (36) month labor replacement warranty, shall
not apply when the remote ice machine is not installed within the remote specifications. The foregoing warranty
shall not apply to any ice machine installed and/or maintained inconsistent with the technical instructions
provided by Manitowoc Ice, Inc. Performance may vary from Sales specifications. S-Model ARI certified
standard ratings only apply when used with a Manitowoc remote condenser.
If the design of the condenser meets the specifications, Manitowoc’s only approval is for full warranty coverage
to be extended to the Manitowoc manufactured part of the system. Since Manitowoc does not test the
condenser in conjunction with the ice machine, Manitowoc will not endorse, recommend, or approve the
condenser, and will not be responsible for its performance or reliability.
HEAD PRESSURE CONTROL VALVE
Any remote condenser connected to a Manitowoc SModel Ice Machine must have a head pressure control
valve #836809-3 (available from Manitowoc Distributors) installed on the condenser package. Manitowoc will not
accept substitute “off the shelf” head pressure control valves.
FAN MOTOR
The condenser fan must be on during the complete ice machine freeze cycle (do not cycle on fan cycle control).
The ice maker has a condenser fan motor circuit for use with a Manitowoc condenser. It is recommended that this
circuit be used to control the condenser fan(s) on the multi-circuit condenser to assure it is on at the proper
time. Do not exceed the rated amps for the fan motor circuit listed on the ice machine’s serial tag.
INTERNAL CONDENSER VOLUME
The multi-circuit condenser internal volume must not be less than or exceed that used by Manitowoc (see chart
on next page). Do not exceed internal volume and try to add charge to compensate, as compressor failure will result.
ΔT is the difference in temperature between the condensing refrigerant and entering air. The ΔT should
be 15 to 20°F (-9.4 to -6.6°C) at the beginning of the freeze cycle (peak load conditions) and drop down to 12
to 17°F (-11.1 to -8.3°C) during the last 75% of the freeze cycle (average load conditions).
REFRIGERANT CHARGE
Remote ice machines have the serial plate refrigerant charge (total system charge) located in the ice maker
section. (Remote condensers and line sets are supplied with only a vapor charge.)
QUICK CONNECT FITTINGS
The ice machine and line sets come with quick connect fittings. It is recommended that matching quick connects
(available through Manitowoc Distributors) be installed in the multi-circuit condenser, and that a vapor “holding”
charge (5 oz.) of proper refrigerant be added to the condenser prior to connection of the ice machine or line
set to the condenser.
Manitowoc warrants only complete new and unused remote packages. Guaranteeing the integrity of a
new ice machine under the terms of our warranty prohibits the use of pre-existing (used) tubing or condensers.
Do not use a fan cycling control to try to maintain discharge pressure. Compressor failure will result.
Never add more than nameplate charge to ice machine for any application.
NON-MANITOWOC MULTI-CIRCUIT CONDENSER SIZING CHART
Typical Single Circuit Remote Condenser Installation
Ice Machine
Installation Check List
Is the Ice Machine level?
Has all of the internal packing been removed?
Have all of the electrical and water connections been made?
Has the supply voltage been tested and checked against the rating on the nameplate?
Is there proper clearance around the ice machine for air circulation?
Is the ice machine grounded and polarity correct?
Has the ice machine been installed where ambient temperatures will remain in the range of 35° - 110°F (1.6° - 43.3°C)?
Has the ice machine been installed where the incoming water temperature will remain in the range of 35° - 90°F (1.6° - 32.2°C)?
Is there a separate drain for the water-cooled condenser?
Is there a separate drain for the bin?
Are the ice machine and bin drains vented?
Are all electrical leads free from contact with refrigeration lines and moving equipment?
Has the owner/operator been instructed regarding maintenance and the use of Manitowoc Cleaner and Sanitizer?
Has the owner/operator completed the warranty registration card?
Has the ice machine and bin been sanitized?
Is the toggle switch set to ice? (The toggle switch is located directly behind the front panel).
Is the ice thickness control set correctly?
(Refer to Operational Checks to check/set the correct ice bridge thickness).
Additional Checks for Remote Models
Has the receiver service valve been opened?
Does the remote condenser fan operate properly after start-up?
Has the remote condenser been located where ambient temperatures will remain in the range of -20° - 120°F .
Is the line set routed properly?
Are both refrigeration lines to remote condenser run so they do not lay in water and are properly insulated?
Before Starting the Ice Machine
All Manitowoc ice machines are factory-operated and adjusted before shipment. Normally, new installations do
not require any adjustment.
To ensure proper operation, follow the Operational Checks in Section 3 of this manual. Starting the ice
machine and completing the Operational Checks are the responsibilities of the owner/operator.
Adjustments and maintenance procedures outlined in this manual are not covered by the warranty.
AuCS® Automatic Cleaning System
This optional accessory monitors ice making cycles and initiates cleaning procedures automatically. The AuCS®
accessory can be set to automatically clean or sanitize the ice machine every 2, 4 or 12 weeks. Refer to the
AuCS® Installation, Use and Care Manual for details.
Potential Personal Injury Situation
Do not operate equipment that has been misused. abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
Ice Machine Operation
Sequence Of Operation
NOTE: The toggle switch must be in the ice position and the water curtain must be in place on the evaporator
before the ice machine will start. INITIAL START-UP OR START-UP AFTER AUTOMATIC SHUT-OFF
1. Water Purge
Before the compressor starts, the water pump and water dump solenoid are energized for 45 seconds, to
completely purge the ice machine of old water. This feature ensures that the ice making cycle starts with fresh water.
The harvest valve(s) is also energized during water purge, although it stays on for an additional 5 seconds
(50 seconds total on time) during the initial refrigeration system start-up.
When Used - The air compressor energizes for the last 10 seconds of the cycle.
2. Refrigeration System Start-Up
The compressor starts after the 45 second water purge, and it remains on throughout the entire Freeze and
Harvest Sequences. The water fill valve is energized at the same time as the compressor. The harvest valve(s)
remains on for 5 seconds during initial compressor startup and then shuts off.
At the same time the compressor starts, the condenser fan motor (air-cooled models) is supplied with power
throughout the entire Freeze and Harvest Sequences. The fan motor is wired through a fan cycle pressure
control, therefore it may cycle on and off. (The compressor and condenser fan motor are wired through
the contactor. As a result, anytime the contactor coil is energized, the compressor and fan motor are supplied
with power.)
FREEZE SEQUENCE
3. Prechill
The compressor is on for 30 seconds (60 seconds initial cycle) prior to water flow, to prechill the evaporator. The
water fill valve remains on until the water level probe is satisfied.
4. Freeze
The water pump restarts after the prechill. An even flow of water is directed across the evaporator and into each
cube cell, where it freezes. The water fill valve will cycle on and then off one more time to refill the water trough.
When sufficient ice has formed, the water flow (not the ice) contacts the ice thickness probe. After
approximately 10 seconds of continual water contact, the harvest sequence is initiated. The ice machine
cannot initiate a harvest sequence until a 6 minute freeze lock has been surpassed.
NOTE: Freeze lock is bypassed after moving the toggle switch from OFF to ICE position for the first cycle only.
HARVEST SEQUENCE
5. Water Purge
The harvest valve(s) opens at the beginning of the water purge to divert hot refrigerant gas into the evaporator.
The water pump continues to run, and the water dump valve energizes for 45 seconds to purge the water in the
sump trough. The water fill valve energizes (turns on) and de-energizes (turns off) strictly by time. The water fill
valve energizes for the last 15 seconds of the 45-second water purge.
After the 45 second water purge, the water fill valve, water pump and dump valve de-energize. (Refer to
“Water Purge Adjustment” for details.)
6. Harvest
The harvest valve(s) remains open and the refrigerant gas warms the evaporator causing the cubes to slide, as
a sheet, off the evaporator and into the storage bin. The sliding sheet of cubes swings the water curtain out,
opening the bin switch.
The momentary opening and re-closing of the bin switch terminates the harvest sequence and returns the ice
machine to the freeze sequence (Step 3 - 4.) When Used - The air compressor energizes after 35
seconds and remains energized throughout the entire harvest cycle. The air compressor will automatically
energize for 60 seconds when the harvest cycle time exceeded 75 seconds in the previous cycle.
AUTOMATIC SHUT-OFF
7. Automatic Shut-Off
When the storage bin is full at the end of a harvest sequence, the sheet of cubes fails to clear the water
curtain and will hold it open. After the water curtain is held open for 30 seconds, the ice machine shuts off. The
ice machine remains off for 3 minutes before it can automatically restart.
The ice machine remains off until enough ice has been removed from the storage bin to allow the ice to fall clear
of the water curtain. As the water curtain swings back to the operating position, the bin switch re-closes and the
ice machine restarts (steps 1 - 2), provided the 3 minute delay period is complete.
SAFETY TIMERS
The control board has the following non-adjustable safety timers:
• The ice machine is locked into the freeze cycle for 6 minutes before a harvest cycle can be initiated.
Freeze lock is bypassed after moving the toggle switch from OFF to ICE position for the first cycle only.
• The maximum freeze time is 60 minutes at which time the control board automatically initiates a
harvest sequence (steps 5 & 6).
• The maximum harvest time is 3.5 minutes at which time the control board automatically initiates a freeze
sequence (steps 3 & 4).
WARM WATER RINSE CYCLE
Closing the back of the evaporator allows ice to build up on the rear of the evaporator and the plastic evaporator
frame parts. After 200 freeze/harvest cycles have been complete the control board will initiate a warm water rinse.
After the 200th harvest cycle ends:
• The Clean and Harvest LED’s energize to indicate the ice machine is in a warm water rinse.
• The compressor and harvest valve remain energized.
• The water pump energizes.
• The water inlet valve energizes until water contacts
the water level probe.
• The compressor and harvest valve warm the water for 5 minutes, then de-energize.
• The water pump remains energized for an additional 5 minutes (10 minute total on time) then deenergizes.
NOTE: The warm water rinse cycle can be terminated by moving the toggle switch to the OFF position, then back to ICE.
Operational Checks
GENERAL
Manitowoc ice machines are factory-operated and adjusted before shipment. Normally, new installations do
not require any adjustment. To ensure proper operation, always follow the
Operational Checks:
• when starting the ice machine for the first time
• after a prolonged out of service period
• after cleaning and sanitizing
NOTE: Routine adjustments and maintenance procedures are not covered by the warranty.
WATER LEVEL
The water level sensor is set to maintain the proper water level above the water pump housing. The water
level is not adjustable. If the water level is incorrect, check the water level probe for damage (probe bent,
etc.). Clean the water level probe with ice machine cleaner, rinse thoroughly and re-check operation. Repair
or replace the probe as necessary.
ICE THICKNESS CHECK
The ice thickness probe is factory-set to maintain the ice bridge thickness at 1/8" (.32 cm).
NOTE: Make sure the water curtain is in place when performing this check. It prevents water from splashing
out of the water trough.
1. Inspect the bridge connecting the cubes. It should be about 1/8" (.32 cm) thick.
2. If adjustment is necessary, turn the ice thickness probe adjustment screw clockwise to increase
bridge thickness, counterclockwise to decrease bridge thickness. Set at 1/4” gap between ice
machine and evaporator as starting point, then adjust to achieve a 1/8” bridge thickness.
NOTE: Turning the adjustment 1/3 of a turn will change the ice thickness about 1/16" (1.5 mm).
Ice Thickness Check
3. Make sure the ice thickness probe wire and the bracket do not restrict movement of the probe.
Water Level Probe Location
HARVEST SEQUENCE WATER PURGE
The harvest sequence water purge adjustment may be used when the ice machine is hooked up to special
water systems, such as a de-ionized water treatment system.
• The harvest sequence water purge is factory set for 45 seconds. Repositioning the jumper will set the
harvest water purge to 0 seconds. This setting does not affect the SeCs or AuCs (cleaning) sequences.
• During the harvest sequence water purge, the water fill valve energizes and de-energizes by time. The
water purge must be at the factory setting of 45 seconds for the water fill valve to energize during the
last 15 seconds of the water purge. If it is set to less than 45 seconds, the water fill valve will not energize
during the water purge.
Water Purge Adjustment
For your safety and to eliminate errors, we recommend that a qualified service technician make the harvest
water purge adjustment.
Disconnect electric power to the ice machine at the electrical disconnect before proceeding.
Important
The harvest sequence water purge is factory-set at 45 seconds. A shorter purge setting (with standard
water supplies such as city water) is not recommended. This can increase water system cleaning and sanitizing requirements.
Section 4 Maintenance
Interior Cleaning and Sanitizing
GENERAL
Clean and sanitize the ice machine every six months for efficient operation. If the ice machine requires more
frequent cleaning and sanitizing, consult a qualified service company to test the water quality and
recommend appropriate water treatment. The ice machine must be taken apart for cleaning and sanitizing.
CLEANING PROCEDURE
Ice machine cleaner is used to remove lime scale and mineral deposits. Ice machine sanitizer disinfects and
removes algae and slime.
Step 1 Set the toggle switch to the OFF position after ice falls from the evaporator at the end of a Harvest
cycle. Or, set the switch to the OFF position and allow the ice to melt off the evaporator.
Step 2 Remove top cover. This will allow easiest access for adding cleaning and sanitizing solutions.
Step 3 Remove all ice from the bin.
Step 4 Place the toggle switch in the CLEAN position.
The water will flow through the water dump valve and down the drain. Wait until the water trough refills and
water flows over the evaporator, then add the proper amount of ice machine cleaner.
Step 5 Wait until the clean cycle is complete (approximately 30 minutes) then place the toggle switch
in the OFF position and disconnect power to the ice machine (and dispenser when used).
Step 6 Remove parts for cleaning.
A. Remove the water curtain
• Gently flex the curtain in the center and remove it from the right side.
• Slide the left pin out. Water Curtain Removal
Use only Manitowoc approved Ice Machine Cleaner
and Sanitizer for this application (Manitowoc Cleaner part number 94-0546-3 and Manitowoc
Sanitizer part number 94-0565-3). It is a violation of Federal law to use these solutions in a manner
inconsistent with their labeling. Read and understand all labels printed on bottles before use.
Do not mix Cleaner and Sanitizer solutions together. It is a violation of Federal law to use these solutions
in a manner inconsistent with their labeling. Wear rubber gloves and safety goggles (and/or face
shield) when handling ice machine Cleaner or Sanitizer.
Never use anything to force ice from the evaporator.
Damage may result.
Model Amount of Cleaner
S300/S320/S420 3 ounces (90 ml) S450/S500/S600/S850/ S1000/S1200 5 ounces (150 ml)
S1400/S1600/S1800 9 ounces (265 ml)
Disconnect the electric power to the ice machine at the electric service switch box.
Maintenance Section 4
B. Remove the ice thickness probe
• Compress the hinge pin on the top of the ice thickness probe.
Ice Thickness Probe Removal
• Pivot the ice thickness probe to disengage one pin then the other. The ice thickness probe can be
cleaned at this point without complete removal. If complete removal is desired, disconnect the ice
thickness control wiring from the control board.
C. Remove the water distribution tube
NOTE: Distribution tube thumbscrews are retained to prevent loss. Loosen thumbscrews but do not pull
thumbscrews out of distribution tube.
Water Distribution Tube Removal
• Loosen the two outer screws (do not remove screws completely they are retained to prevent loss) and pull
forward on the distribution tube to release from slip joint.
• Disassemble distribution tube by loosening the two
(2) middle thumbscrews and dividing the distribution tube into two pieces.
D. Remove the water trough
• Depress tabs on right and left side of the water trough.
• Allow front of water trough to drop as you pull forward to disengage the rear pins.
E. Remove the water level probe
• Pull the water level probe straight down to disengage.
• Lower the water level probe until the wiring connector is visible.
• Disconnect the wire lead from the water level probe.
• Remove the water level probe from the ice machine.
DEPRESS TABS
WATER LEVEL PROBE SV3141
F. Remove the water pump.
Water Pump Removal
• Grasp pump and pull straight down on pump assembly until water pump disengages and electrical
connector is visible.
• Disconnect the electrical connector.
• Remove the water pump assembly from ice machine.
• Do not soak the water pump motor in cleaner or sanitizer solution
G. Remove the evaporator tray from the bottom of the evaporator.
• Loosen thumbscrew on left side of tray.
• Allow left side of tray to drop as you pull the tray to the left side. Continue until the outlet tube
disengages from the right side.
Step 7 Mix a solution of cleaner and warm water.
Depending upon the amount of mineral buildup, a larger quantity of solution may be required. Use the ratio in the
table below to mix e
