Manitowoc Ice SMS050A Installation Manual
Installation, Use & Care Manual
Manitowoc
America’s #1 Selling Ice Machine
Part Number 040001361 05/10
SM Model
Ice Machines
This manual is updated as new information and models are released.
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This manual contains English and French text
Section 1
General Information
Model Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
How to Read a Model Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Section 2
Installation Instructions
Installation Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Location of Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Water Supply and Drain Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step-by-Step Installation Procedur e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Drain Pump Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Reversing Door Swing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Installation Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Before Starting the Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table of Contents
Legs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Drain Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Manitowoc Cleaner and Sanitizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Arctic Pure Water Filter System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Minimum Circuit Ampacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Maximum Breaker Size & Minimum Circuit Amperage Chart . . . . . . . . . . . . . . 6
GFCI Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Water Inlet Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Drain Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Water Supply and Drain Line Sizing/Connections . . . . . . . . . . . . . . . . . . . . . . . 7
Section 3
Operation
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Safety Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Operational Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Water Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Bin Thermostat Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Testing and Adjusting the Bin Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cube Weight Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2 Part Number 040001361 05/10
Section 4
Maintenance
Section 5
Customer Support
Table of Contents (continued)
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Interior Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
In Place Cleaning/Sanitizing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Cleaning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Removal of Parts For Cleaning/Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Exterior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Cleaning the Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Removal from Service/Long Term Storage/Winterization . . . . . . . . . . . . . . . . . . 21
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Self-Contained Air-Cooled Ice Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Commercial Ice Machine Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Residential Ice Machine Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Part Number 040001361 05/10 3
Section 1
!
Warning
SM S 050 A
ICE MACHINE
MODEL
ICE CUBE SIZE
S STANDARD
A SELF-CONTAINED AIR-COOLED
CONDENSER TYPE
ICE MACHINE
SERIES
ICE MACHINE
MODEL
ICE MACHINE
SERIES
ICE CUBE SIZE
S STANDARD
CONDENSER TYPE
A SELF-CONTAINED AIR-COOLED
General Information
Model Numbers
This manual covers the following models:
Self-Contained
Air-Cooled
SMS050A
PERSONAL INJURY POTENTIAL
Do not operate equipment that has been misused,
abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
How to Read a Model Number
Accessories
Contact your Manitowoc distributor for these optional
accessories:
LEGS
Four inch adjustable legs are available.
DRAIN PUMP
Pumps waste water from ice machine to drain.
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.
Cleaner Part Number Sanitizer Part Number
16 ounce bottle - 000000084 16 ounce bottle - 94-0565-3
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. The
water filter is K00374.
4 Part Number 040001361 05/10
Section 2
!
Warning
Important
!
Caution
Installation Instructions
Installation Prerequisites
• Must have open site (gravity) drain available or
purchase optional drain pump (see W ater Supply and
Drain Requirements).
• Must have a grounded, polarized electrical power
supply on a dedicated electrical circuit (only
appliance on circuit). If GFCI (ground fault circuit
interrupter) is required by your loca l electrical code , it
must be breaker type, not outlet type (see Electrical
Service).
• Must have cold water supply line available at Ice
Machine (see Water Supply and Drain
Requirements).
• Clearance and air temperatures must be met (see
Location of Ice Machine).
• If built into a cabinet, ice machine must be removable
for yearly cleaning procedure.
General
Call Manitowoc Foodservice at (800) 235-9698 for the
name of a local company capable of installation and
start-up services.
Location of Ice Machine
The location selected for the ice machine must meet the
following criteria. If any of these criteria are not met,
select another location.
• The ice machine may be built into a cabinet, however
the location must allow removal of the ice machine
for cleaning and servicing. Service diagnostics are
performed from the top of the ice machine.
• The location must be free of airborne and other
contaminants.
• The air temperature must be at least 50°F (10°C), but
must not exceed 110°F (43°C).
• The location must not be near heat-generating
equipment.
• The location must not obstruct air flow through the
condenser (airflow is in and out the front of the ice
machine).
• The location must allow enough clearance for water,
drain and electrical connections at the rear of the ice
machine.
• The ice machine may be installed outside.
Proper installation requires connection to the water
supply, a drain and a dedicated electrical circuit.
These connections are the responsibilities of the
owner/operator. Improper connections can result in
personal injury, substantial property damage and
erratic machine operation. If you are unsure of your
ability to safely connect the ice machine, consult
qualified professionals or contact Manitowoc
Foodservice.
Failure to follow these installation guidelines may
affect warranty coverage.
The ice machine must be protected if it will be
subjected to ambient temperatures below 32°F
(0°C). Component failure caused by exposure to
freezing temperatures is not covered by the
warranty.
CLEARANCES
Top/Sides 5" (12.7 cm)*
Back 5" (12.7 cm)
Front 24" (60.9 cm)
*The ice machine may be built into a cabinet. There is no minimum clearance
requirement for the top or sides of the ice machine. The listed values are
recommended for efficient operation and servicing only.
Part Number 040001361 05/10 5
Installation Instructions Section 2
!
Warning
!
Warning
Important
Electrical Service
GENERAL
All wiring must conform to local, state and national
codes.
Prepare electrical circuit before installation of your ice
machine. Installation requires a grounded (three-pr ong),
polarized receptacle with a separate fuse/circuit breaker
in an electrical service box.
VOLTAGE
The maximum allowable voltage variation is ±1 0% of the
rated voltage at ice machine star t-up (when the electrical
load is highest).
The ice machine must be grounded in accordance
with national and local electrical codes.
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 provide d fo r
each ice machine.
• The maximum allowable voltage variation is +/-10%
of the rated voltage at ice machine start-up (when the
electrical load is highest).
Observe correct polarity of incoming line voltage.
Incorrect polarity can lead to erratic ice machine
operation and a safety issue.
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.)
ELECTRICAL REQUIREMENTS
Refer to Ice Machine Model/Serial Plate for voltage/
amperage specifications.
MAXIMUM BREAKER SIZE & MINIMUM CIRCUIT AMPERAGE CHART
Air-Cooled
Voltage
Model
SM50A 115/1/60 15 4.1
Phase
Cycle
Maximum
Fuse/
Circuit
Breaker
Minimum
Circuit
Amps
GFCI REQUIREMENTS
If GFCI (ground fault circuit interrupter) is required by
local electrical code, it must be breaker type.
• Check all green ground screws in the control box and
verify they are tight before starting the ice machine.
• Manitowoc’s recommended minimum wire size is
#14 for less than 100' (30.5 m) or #12 for more tha n
100' to 200' (30.5 to 61 m) (solid copper conductor
only). The recommended breaker is 15 amp. Local or
state electrical code, length of run or materials used,
can increase the minimum wire gauge required. A
qualified electrician must determine the pr op er w ire
size, although #14 is the minimum size allowed.
6
Part Number 040001361 05/10
Section 2 Installation Instructions
!
Caution
Water Supply and Drain Requirements
WATER SUPPLY
Prepare water supply line and drain before in stallation of
your ice machine. Installation requires a 1/4" ID copper
cold water line and compression fitting (not supplied).
The ice machine is supplied with a drain hose for gravity
draining. The optional drain pump must be purchased if
a gravity drain is not possible. Both drain methods
require routing to an open site drain. Do not connect
directly to drain line as bacteria from drain line may
contaminate the ice machine.
The included water filter is designed to inhibit scale
formation, filter sediment, and remove chlorine odor and
taste. The life expectancy of the water filter is 6 months
during normal usage. The ice machine control board will
monitor water usage and indicate when replacement is
required.
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.)
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.
• Drain pump discharge line must terminate at an open
site drain.
• Maximum rise - 12 feet (3.7 m)
• Maximum run - 100 feet (30.5 m)
Approx. Height of Ice Machine Drain
Standard Installation 3" (76 mm)
Installation with Leg Option 7" (179 mm)
• If water pressure exceeds the maximum
recommended pressure (80 psi/552 kPA), obt ain a
water pressure regulator from your Manitowoc
distributor.
• Install a water shut-off valve for the ice making water
lines.
• Insulate the water inlet line to prevent condensation.
WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS
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
Water Inlet
Ice Making
Bin Drain
Drain Pump --- --- 3/8" (.96 cm) Hose 3/8" (.96 cm) ID minimum
NOTE: If air temperature is less than 60°F (15.5°C), water temperature must be equal to or greater than 50°F (10°C).
35°F (1.6°C) Min.
90°F (32.2°C) Max.
--- ---
20 psi (137.9 kPA) Min.
80 psi (551.5 kPA) Max.
1/4" (.64 cm)
ID Copper Tubing
3/4" (1.9 cm)
Hose Barb
1/4" (.64 cm) minimum inside diameter
3/4" (1.9 cm) minimum inside diameter
Part Number 040001361 05/10 7
Installation Instructions Section 2
!
Caution
Water Inlet
!
Warning
!
Warning
Drain
Step-by-Step Installation Procedure
1. Prepare the site by following the instructions under
Electrical Service and Water Supply and Drain
Requirements.
2. Remove ice machine from carton.
3. Inspect for damage.
4. Remove literature/warranty packet and drain hose
from inside the ice machine.
5. Adjust leg levelers (or install optional legs).
6. Reverse door if desired. See Reversing Door Swing
on
page 9.
7. For a gravity drain, install drain hose to drain on back
of ice machine and route to open site drain. For
optional drain pump method, see Drain Pump Option
on
page 9. Refer to Water Supply and Drain
Requirements on page 7.
10. Connect electrical plug to grounded (three-prong),
polarized outlet. See Electrical Service on
The ice machine must be grounded in accordance
with national and local electrical codes. Do not use
an extension cord or adapter.
page 6.
8.
Use compression fitting to connect the Water Inlet
on back of ice machine to the prepared 1/4" ID cold
water line. Refer to Water Supply and Drain
Requirements on
9. Open the shut-off valve on the water line.
Check all visible connections for water leakage.
page 7.
Improper water supply and drain connections can
result in personal injury and substantial property
damage. These connections are the responsibility
of the owner/operator.
11. Place ice machine back in position and check
leveling again. Make any necessary adjustments.
12. Prepare sanitizer solution and sanitize the ice
machine according to In Place Cleaning/Sanitizin g
Procedure steps 5 and 6.
13. Put one gallon of cold water into a container that will
easily pour under the lifted water shutters. Open
shutters and add one gallon of cold water.
14. Press Power button.
15. At initial start-up, ice machine will need
approximately 30 minutes to freeze ice and up to
5
minutes to harvest the ice.
8
Part Number 040001361 05/10
Section 2 Installation Instructions
!
Warning
!
Caution
Remove 2
Allen Screws
Remove Top
Cover
Remove Plastic
Covers and
Hinges
Drain Pump Option
Disconnect power to ice machine before proceeding.
1. Remove top cover screws and slide cover off.
Remove back panel screws and lift panel off.
2. Assemble the outlet tube and vent tube to the drain
pump.
3. Plug the drain pump’s wire assembly into the ice
machine’s wire assembly. Slide drain pump into
cavity.
4. Swap out existing Bin Drain Tube for Bin Drain T ube
packaged with drain pump.
5. Route the vent tube and outlet tube.
6. Reassemble ice machine.
NOTE: See instructions packaged with drain pump for
details.
Upon activation, be sure to check all connections for
water leakage.
Reversing Door Swing
1. Remove top cover from the door - Use a putty knife
to lift the inside edge of the top door cover out and
up to disengage from the door panel. Repeat on
bottom cover.
2. Release door from top hinge - Remove two allen
screws from the top of the door and lift door p anel off
of two bottom allen screws.
NOTE: There are nylon washers for each bottom allen
screw and one plastic bushing for the outside screw, do
not misplace these parts they help the door swing
smoothly.
3. Remove plastic covers from top and bottom hinges
and remove screws securing the hinges. Reinstall
screws in holes after hinges are removed.
4. Remove existing screws from cabinet to reinstall
hinges on opposite side.
5. Install top and bottom hinges in new location.
6. Install the bottom allen screws, nylon washers, and
plastic screw cover (to the outside screw).
7. Before installing the door, there is another plastic
bushing for the top outside allen screw , re move from
top of the door and reinstall on opposite side.
8. Place door on the two bottom screws.
9. Secure top of door with allen screws removed in
step 2.
10. Reinstall top and bottom covers on door. Insert front
pins first then snap into place.
11. Reverse door handle - Loosen 3 screws from inside
door panel until the handle disengages. Flip door
handle 180 degrees and tighten screws.
Part Number 040001361 05/10 9
Installation Instructions Section 2
!
Warning
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 50° - 110°F (10° - 43°C)?
Has the ice machine been installed where the
incoming water temperature will remain in the
range of 35° - 90°F (2° - 32°C)?
When installed is the drain pump functioning
correctly energizes, de-energizes and safety
switch stops the ice machine?
GFCI Required - Is it a breaker type and not a
receptacle type?
Is the ice machine plugged into a properly
grounded, polarized receptacle?
Have the water and drain connections been
examined for leaks?
NOTE: If air temperature is less than 60°F (15. 5°C), water
temperature must be equal to or greater than 50°F (10°C).
Before Starting the Ice Machine
Sanitize the ice machine.
All Manitowoc ice machines are factory-operated and
adjusted before shipment. Normally, new inst allations 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.
Is the ice machine drain line routed to an
open site drain?
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 WARRANTY
REGISTRATION CARD been completed?
Has the ice machine and bin been sanitized?
10
Adjustments and maintenance procedures outlined in
this manual are not covered by the warranty.
Potential Personal Injury Situation
Do not operate equipment that has been misused.
abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
Part Number 040001361 05/10
Section 3
Operation
Sequence of Operation
Depending on ambient conditions and cold water supply
temperature, the ice making process will take
approximately 30 minutes.
1. Initial Start-Up or Start-Up After Automatic ShutOff — Water Fill
Before the compressor starts, the water inlet valve
will energize to purge old water from the system for
about 3 minutes.
2. Refrigeration System Start-Up
The compressor starts after the Water Fill cycle and
remains on throughout the Freeze and Harvest
cycles. The condenser fan motor starts and runs
throughout the Freeze cycle.
3. Freeze
The water pump sprays water into the inverted cup s.
The water freezes layer by layer, until an ice cube
forms in each cup. The control system will adjust the
length of the Freeze cycle to conditions.
4. Harvest
The water pump shuts off and the water inlet valve
starts up to assist harvest and refill the water sump.
The evaporator is warmed, allowing the cubes to
release from the evaporator and drop into the
storage bin. The control system will adjust the length
of the Harvest cycle to conditions and regulate
whether the condenser fan will run.
At the end of the Harvest cycle, the ice machine will
start another Freeze cycle (Step 3).
Control Panel
FUNCTIONS
Power Button (Green)
Pressing the “Power” button once will energize the ice
machine and green Power light. Pressing the “Power”
button a second time will de-energize the ice machine.
Automatic Ice Making Light (Blue)
This light is energized when the ice machine is the ice
making position. The light is off when the ice machine is
in the clean cycle.
Delay Start
Pressing the “Delay Start” button will initiate a delay
cycle. The ice machine will not run until the delay time
expires.
• Pressing the button once will energize the 2 hour
light and initiate a two hour delay period.
• Pressing the button a second time will energize the 4
hour light and initiate a four hour delay period.
• Pressing the button a third time will energize the 8
hour light and initiate an eight hour delay period.
• Pressing the button a fourth time will cancel the delay
cycle.
Clean (Green)
Pressing the “Clean” button will initiate a clean cycle and
de-energize the “Automatic Ice Making” light. The clean
light will flash during the clean cycle to indicate the
proper time to add ice machine cleaner or sanitizer.
Replace Filter (Red)
5. Automati c Shu t -O ff
The level of ice in the storage bin controls the ice
machine shut-off. When the bin is full, ice will
contact the bin thermostat bulb holder. The bin
thermostat bulb cools, which stops the ice machine.
The ice machine remains off until ice no longer
contacts the bin thermostat bulb holder and the
thermostat bulb warms up. The increase in
temperature will restart the ice machine (Step 1).
Part Number 040001361 05/10 11
When the ice machine completes 8000 freeze/harvest
cycles the light will energize to indicate the filter needs
replacement. Depressing the “Clean” button for 6
seconds will reset the counter and de-energize the light.
Operation Section 3
SAFETY TIMERS
The control board has the following non-adjustable
safety timers:
• Initial cycle is 5 minutes longer than subsequent
cycles.
• The ice machine is locked into the freeze cycle for 10
minutes (15 minutes initial cycle) before a harvest
cycle can be initiated.
• The maximum freeze time is 120 minutes at which
time the control board automatically initiates a
harvest cycle (step 4).
• The maximum harvest time is 5 minutes at which
time the control board automatically start a freeze
cycle.
Operational Checks
GENERAL
Manitowoc ice machines are factory-operated and
adjusted before shipment. Normally, new inst allations 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 ice machine maintains the correct water level. The
water level is not adjustable.
BIN THERMOSTAT ADJUSTMENT
The bin thermostat stops the ice machine when the bin
is full. Turn the thermostat to the left to decrease the
level of ice in bin or to the right to increase the level of
ice in bin.
12
Part Number 040001361 05/10
Section 3 Operation
!
Warning
Bin Thermostat
Tube Location
Bin
Thermostat
TESTING AND ADJUSTING THE BIN THERMOSTAT
The bin thermostat stops the ice machine when the bin
is full. It is preset for normal ambient temperatures and
adjustments are usually not required.
The thermostat is functioning correctly if, when three ice
cubes are placed on the thermostat tube for 5 minutes,
the ice machine stops. The ice machine should restart
5
minutes after the cubes are removed.
CUBE WEIGHT ADJUSTMENT
The cube weight can be increased from the factory
setting by adjusting the finish time.
Additional finishing time check:
1. Press and hold the power button for 5 seconds.
2. Count the flashes on the Automatic Ice Making light.
The light will flash once for each additional minute of
freeze cycle time.
Adjusting Finishing Time
Adjust in 1 minute increments and allow the ice machine
to run several freeze/harvest cycles, then inspect the ice
cubes. If a heavier cube weight is desired add another
minute of freeze time and repeat the process.
1. Press and hold the power button.
2. Press and release the clean button once for each
additional minute of freeze cycle time desired.
3. Five minutes is the maximum additional freeze time
that can be added. Pressing the clean button 6 times
will reset the finishing time to zero additional
minutes.
If the ice machine stops before the bin is full or runs after
the bin is full, ambient temperatures are probably high or
low and the bin thermostat can be adjusted as follows:
HAZARDOUS MOVING PA RTS
Power is supplied to ice machine during this
procedure. Avoid contact with the fan b lade an d the
electrical connections.
1. To access the thermostat, remove the two screws
attaching the front grill and remove the grill.
2. Turn the thermostat to the left to decrease the level
of ice before automatic shut-off. Turn to the right to
increase the level of ice before automatic shut-off.
3. Reassemble the plastic panel and grill.
Cube weight increases or decreases depending on
the amount of dimple in the cube
Part Number 040001361 05/10 13
Section 4
!
Warning
Maintenance
General
You are responsible for maintaining the ice machine in accordance with the instructions in this manual. Maintenance
procedures are not covered by the warranty.
If you do not understand the procedures or the
safety precautions that must be followed, call your
local Manitowoc service representative to perform
the maintenance procedures for you.
We recommend that you perform the following maintenance procedures a minimum of once every six months to
ensure reliable, trouble-free operation and maximum ice production.
Maintenance Weekly
Clean Cabinet
Exterior
Sanitize Ice Bin X X X
Clean
Evaporator
Sanitize
Evaporator
Clean
Condenser Coil
Change the
Water Filter
Check Ice
Quality
XXX
X XXX
Semi
Annual
XXX
XXXX
XXX
XXX
Annual
After prolonged
shutdown
At Start-up
14 Part Number 040001361 05/10
Section 4 Maintenance
!
Caution
!
Warning
Interior Cleaning and Sanitizing
GENERAL
Perform an In Place Cleaning/Sanitizing procedure
monthly and a Cleaning/Sanitizing procedure every
12
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. An extremely
dirty ice machine must be taken apart for cleaning and
sanitizing.
Damage to the ice machine evaporator caused by
incorrect chemical usage is not covered by the
warranty. Use Manitowoc Ice Machine Cleaner (part
number 000000084) and Sanitizer (part number
94-0565-3) only.
IN PLACE CLEANING/SANITIZING PROCEDURE
This procedure allows monthly in place cleaning of all
surfaces that come in contact with the water system. The
ice machine requires disassembly and cleaning/
sanitizing a minimum of once every 12 months. The
quality of your potable water supply may require more
frequent cleaning intervals.
Use ice machine cleaner to remove lime scale or other
mineral deposits. Ice machine sanitizer disinfects and
removes algae and slime.
NOTE: All ice must be removed from the bin.
Step 4 Wait 3 minutes until the Clean light flashes, then
add the prepared Manitowoc Cleaner by lif ting the water
shutters and pouring directly into the spray area.
Step 5 The ice machine will automatically time out a
ten minute cleaning cycle, followed by eight rinse cycles,
and stop. The Clean light will turn off to indicate the
clean cycle is complete. This entire cycle lasts
approximately 30 minutes.
Step 6 Prepare 1/2 oz (1 tablespoon) of undiluted
Manitowoc Ice Machine Sanitizer (part number 94-0565-3
only) in a container that will fit into the same area.
Model Amount of Sanitizer
SM50 1/2 oz. (15 ml)
Step 7 Press the Clean switch. Wait 3 minutes until the
Clean light flashes, then add the prepared Manitowoc
Sanitizer by lifting the water shutters and pouring directly
into the spray area. The ice machine will automatically
time out a ten minute sanitizing cycle, followed by eight
rinse cycles, and stop. The Clean light will turn off to
indicate the sanitizing cycle is complete. This entire
cycle lasts approximately 30 minutes.
NOTE: The ice machine will automatically continue from
the previous point before the clean cycle was initiated.
A. If the ice machine was in the ice making cycle,
the control board will start ice making again.
B. If the ice machine was in the off cycle, the
control board will turn off.
Follow all labels and warnings on cleaner and
sanitizer bottles.
Step 1 Prepare 4 oz (1/2 cup) of undiluted Manitowoc
Ice Machine Cleaner (part number 00000008 4 only) in a
container that will fit easily under the lifted water
shutters. Refer to
Model Amount of Cleaner
Step 2 Press the clean switch. The ice machine will
initiate a 2 minute harvest to remove any remaining ice
from the evaporator.
Step 3 Remove all ice from the bin.
Part Number 040001361 05/10 15
page 18 to identify the water shutters.
SM50 4 oz. (120 ml)
Step 8 Mix a solution of 1/4 oz. (7.4 ml) of sanitizer and
1/2 gallon (1.9 L) of water . Use a spray bottle, sponge or
cloth to sanitize the bin. Rinsing is not required.
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