Manitowoc Ice QM45AE Installation Manual
UnderCounter Ice Machines
QM45 Models
Installation, Operation and Maintenance Manual
This manual is updated as new information and models are released. Visit our website for the latest manual.
Part Number: 040001360 6/14
Section 1
General Information
Model Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Section 2
Installation Instructions
Location of Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Ice Machine Heat of Rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Leveling the Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Water Service/Drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Before Starting the Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Ice Machine Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table of Contents
Tri-liminator Water Filter System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Manitowoc Cleaner and Sanitizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Fuse/Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Drain Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Water Supply and Drain Line Sizing/Connections . . . . . . . . . . . . . . . . . . . . . . . 7
Section 3
Operation
Ice Making Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Initial Start-up Or Start-up After Automatic Shut-off . . . . . . . . . . . . . . . . . . . . . . 9
Freeze Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Harvest Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Automatic Shut-off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Operational Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Siphon System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Water Float Valve Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Water Level Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Ice Bridge Thickness Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2 Part Number 040001360 6/14
Section 4
Maintenance
Section 5
Customer Support
Table of Contents (continued)
Interior Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Cleaning and Sanitizing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Exterior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Cleaning the Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Removal from Service/Winterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Safety Limit Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Commercial Ice Machine Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Residential Ice Machine Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Part Number 040001360 6/14 3
Section 1
General Information
Model Numbers
This manual covers the following models:
QM45A 115/60/1
QM45A 230/50/1
QM45A 230/60/1
Accessories
Contact your Manitowoc distributor for these optional
accessories:
TRI-LIMINATOR WATER FILTER SYSTEM
Engineered specifically for Manitowoc ice machines, TriLiminator water filters are 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) and 1 gal (3.78 l)
bottles. These are the only cleaner and sanitizer
approved for use with Manitowoc products.
Cleaner Part Number Sanitizer Part number
16oz 94-0456-3 16oz 94-0565-3
1 Gallon 94-0580-3 1 Gallon 94-0581-3
4 Part Number 040001360 6/14
Section 2
!
Caution
Installation Instructions
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 location must be indoors.
• The location must be free of airborne and other
contaminants.
• The air temperature must be at least 2°C (35°F), but
must not exceed 43°C (110°F).
• The location must not be near heat-generating
equipment or in direct sunlight.
• The location must be capable of supporting the
weight of the ice machine and a full bin of ice.
• The location must allow enough clearance for water,
drain and electrical connections in the rear of the ice
machine.
• The location must not obstruct airflow through or
around the ice machine (condenser airflow is in and
out the front). Refer to the chart below for clearance
requirements.
Ice Machine Heat of Rejection
Series
Ice Machine
QM45 1750 2600
* B.T.U./Hour
** Because the heat of rejection varies during the ice making
cycle, the figure shown is an average.
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 -c on tained air cooled ice machines are installed.
Air Conditioning** Peak
Heat of Rejection*
Leveling the Ice Machine
After moving the ice machine into the installation
location, it must be leveled for proper operation. Follow
these steps to level the ice machine:
1. Check the level of the ice machine from front to back
and from side to side.
2. If the ice machine is not level, adjust the leveling
glides on each corner of the base of the ice machine
as necessary.
Self-Contained Air-Cooled
Top/Sides 5" (127 mm)*
Back 5" (127 mm)*
NOTE: The ice machine may be built into a cabin et .
* There is no minimum clearance requirement for the top or left and
right sides of the ice machine. The listed values are 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” Section 4.
Leveling Glide
3. Check the level of the ice machine after each
adjustment of the leveling glides.
4. Repeat steps 2 and 3 until the ice machine is level
from front to back and from side to side.
Part Number 040001360 6/14 5
Installation Instructions Section 2
!
Warning
! Warning
! Warning
Important
Important
Electrical Service
All wiring must conform to local, state and national
codes.
Voltage Phase Total Amps
230/50/1 2.6
230/60/1 3.1
115/60/1 5.2
VOLTAGE
The maximum allowable voltage variation is ± 10% of
the rated voltage on the ice machine model/serial
number plate at start-up (when the electrical load is
highest).
The ice machine must be grounded in accordance
with national and local electrical codes.
Never use an extension cord. If an outlet is not
within reach of the ice machine’s power cord, have
a proper amperage outlet wired closer to the ice
machine.
FUSE/CIRCUIT BREAKER
A separate fuse/circuit breaker must be provided for
each ice machine.
NOTE: A disconnect means must be provided for field
wiring.
ELECTRICAL RATING
The electrical rating is used to help select the wire size
of the electrical supply. The wire size (or gauge) also
depends on location, materials used, length of run, etc.,
so it must be determined by a qualified electrician.
Water Service/Drains
WATER SUPPLY
Local water conditions may require treatment of the
water to inhibit scale formation, filter sediment, remove
chlorine, and improve taste and clarity.
If you are installing a Manitowoc Tri-Liminator
water filter system, refer to the Installation
Instructions supplied with the filter system for ice
making water inlet connections.
Follow these guidelines to install water inlet lines:
• Connect to potable water supply only.
• 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, obtain a water pressure
regulator from your Manitowoc distributor.
• Install a water shut-off valve for both the ice making
and condenser water lines (if applicable).
• Insulate water lines to prevent condensation.
The water inlet line is connected to the water
valve. This valve is located just behind the front
panel of the ice machine.
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 2.5 cm drop per 1 meter of
run (1.5 inch per 5 feet), and must not create traps.
• The floor drain must be large enough to
accommodate drainage from all drains.
• Insulate the bin drain line to prevent condensation.
6
Part Number 040001360 6/14
Section 2 Installation Instructions
!
Caution
WATER SHUTOFF
VALVE
ICE MAKING WATER INLET
TUBING 0.95 cm (3/8") MIN.I.D.
ICE MAKING WATER/BIN
DRAIN 1.59 cm (5/8") MIN.I.D.
WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS
Plumbing must conform to state and local codes.
Ice Making
Water Inlet
Ice Making/Bin
Water Drain
1
Min. = Minimum
2
Max. = Maximum
Water
Temperature
0.6°C (33°F) Min.
32.2°C (90°F) Max.
—— ——
1
137.9 kPA (20 psi) Min.
2
551.5 kPA (80 psi) Max.
Water
Pressure
Ice Machine
Fitting
1
2
3/8" male hose
connection
1.59 cm (5/8") inside
diameter flexible hose
Tubing Size Up to Ice
Machine Fitting
0.95 cm (3/8") minimum
inside diameter
1.59 cm (5/8") minimum
inside diameter
Typical Water Supply and Drain Line Sizing and Connections
Part Number 040001360 6/14 7
Installation Instructions Section 2
!
Warning
Installation Checklist Before Starting the Ice Machine
All Manitowoc ice machines are factory-operated and
Is the ice machine level?
Has all of the internal packing been removed?
Have all of the electrical and water connection s
been made?
adjusted before shipment. Normally, new inst allations do
not require any adjustment.
To ensure proper operation, follow the Operational
Checks. 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.
Ice Machine Inspection
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?
Has the ice machine been installed where
ambient temperatures will remain in the range
of 35° – 110°F (2° – 43°C)?
Check all water fittings and lines for leaks. Also, make
sure the refrigeration tubing is not rubbing or vibrating
against other tubing, panels, etc.
Do not put anything (boxes, etc.) in front of the ice
machine. There must be adequate airflow through and
around the ice machine to maximize ice production and
ensure long component life.
Has the ice machine been installed where the
incoming water temperature will remain in the
range of 33° – 90°F (1° – 32°C)?
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 complete d the warranty
registration card?
Has the ice machine and bin been sanitized?
Has this manual been given to the owner/
operator?
PERSONAL INJURY POTENTIAL
Do not operate equipment that has been misused,
abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
8
Part Number 040001360 6/14
Ice Making Sequence of Operation
Section 3
Operation
INITIAL START-UP OR START-UP AFTER AUTOMATIC SHUT-OFF
1. Pressure Equalization
Before the compressor starts the hot gas valve is
energized for 15 seconds to equalize pressures during
the initial refrigeration system start-up.
2. Refrigeration System Start-Up
The compressor starts after the 15-second pressure
equalization, and remains on throughout the entire
Freeze and Harvest Sequences. The hot gas valve
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 relay . As a result, any time the relay coil is energized,
the compressor and fan motor are supplied with power.)
FREEZE SEQUENCE
3. Prechill
The compressor is on for 30 seconds prior to water flow
to Prechill the evaporator.
4. Freeze
The water pump starts after the 30-second Prechill. An
even flow of water is directed across the evaporator and
into each cube cell, where it freezes.
When sufficient ice has formed, the water flow (not the
ice) contacts the ice thickness probe. After
approximately 7 seconds of continual water contact, the
Harvest Sequence is initiated. The ice machine cannot
initiate a Harvest Sequence until a 6-minute freeze time
has been surpassed.
HARVEST SEQUENCE
5. Harvest
The water pump de-energizes stopping flow over the
evaporator. The rising level of water in the sump trough
diverts water out of the overflow tube, purging excess
minerals from the sump trough. The hot gas valv e also
opens to divert hot refrigerant gas into the evaporator.
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 contacts the ice
damper, 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 (steps 3 - 4).
AUTOMATIC SHUT-OFF
6. Automatic Shut-Off
When the storage bin is full at the end of a Harvest
Sequence, the sheet of cubes fails to clear the ice
damper and will hold it down. After the ice damper is
held open for 7 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 damper. As the ice damper 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.
Part Number 040001360 6/14 9
Operation Section 3
WATER
LEVEL
SIPHON
CAP
STANDPIPE
DRAIN
PRESS TO
OPEN
PRESS TO
CLOSE
Operational Checks
GENERAL
Your Manitowoc ice machine was factory-operated and
adjusted before shipment. Normally , a newly inst alled ice
machine does not require any adjustment.
To ensure proper operation, always follow these
Operational Checks when starting the ice machine:
• for the first time
• after a prolonged out of service period
• after cleaning and sanitizing
Routine adjustments and maintenance procedures
outlined in this manual are not covered by the warranty.
SIPHON SYSTEM
To reduce mineral build-up and cleaning frequency, the
water in the sump trough must be purged during each
harvest cycle.
When the water pump de-energizes the level in the
water trough rises above the standpipe st artin g a siphon
action. The siphon action stops when the water level in
the sump trough drops. When the siphon action stops,
the float valve refills the water trough to the correct level.
Siphon System Check
Follow steps 1 through 6 under water level check.
WATER FLOAT VALVE CHECK
Before water will flow into the water trough the float
valve shut-off must be in the OPEN position.
10
Part Number 040001360 6/14
Section 3 Operation
SIPHON CAP
SET THE WA TER LEVEL
TO THE LINE IN THE
WATER TROUGH
ADJUSTING SCREW
1/8" ICE BRIDGE THICKNESS
WATER LEVEL CHECK
Check the water level while the ice machine is in the ice
mode and the water pump is running. The correct water
level is 1/4" (6.3 mm) to 3/8" (9.5 mm) below the top of
the standpipe a line in the water trough indicates the
correct level.
The float valve is factory-set for the proper water level. If
adjustments are necessary:
1. Verify the ice machine is level (see page 4-6).
2. Remove the siphon cap from the standpipe.
3. Place the main ON/OFF/WASH toggle switch to the
ON position, and wait until the float valve stops
adding water.
4. Adjust the water level to (1/4" to 3/8" [6.3 to 9.5 mm]
below the standpipe) the line in the water tr ough.
5. Loosen the two screws on the float valve bracket.
ICE BRIDGE THICKNESS CHECK
NOTE: During shipping and installation the ice thickness
probe may shift, requiring further adjustment to achieve
the rated energy efficiency and production. The ice
weight per cycle must be within the minimum and
maximum for your ice machine series. Capture and
weigh the ice from the second freeze/harvest cycle. The
target weight is the middle of the minimum and
maximum weight in the chart below.
Series
Ice Machine
QM45 1.1 lbs 1.3 lbs
Target weight is the middle of the minimum and maximum weight.
Ice Weight From One Cycle
Minimum Ice
Weight
Maximum Ice
Weight
The ice thickness probe is factory-set to maintain th e ice
bridge thickness at 1/8" (3.2 mm).
1. Inspect the bridge connecting the cubes. It should
be about 1/8" (3.2 mm) thick.
2. If adjustment is necessary, turn the ice thickness
probe adjustment screw clockwise to increase
bridge thickness, or counterclockwise to decrease
bridge thickness.
NOTE: Turning the adjustment 1/3 of a turn will change
the ice thickness about 1/16" (1.5 mm).
6. Raise or lower the float valve assembly as
necessary, then tighten the screws.
7. Move the main ON/OFF/ WASH toggle switch to the
OFF position. The water level in the trough will rise
above the standpipe and run down the drain.
8. Replace the siphon cap on the standpipe, and verify
water level and siphon action by repeating steps 3
through 5.
Part Number 040001360 6/14 11
Make sure the ice thickness probe wire and the brac ket
do not restrict movement of the probe.
Section 4
!
Caution
!
Caution
!
Warning
!
Caution
!
Warning
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.
Use only Manitowoc approved Ice Machine Cleaner
(part number 94-0546-3) and 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.
CLEANING AND SANITIZING PROCEDURE
Do not mix Ice Machine Cleaner and Sanitizer
solutions together. It is a violation of Federal law to
use these solutions in a manner inconsistent with
their labeling.
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.
Never use anything to force ice from the evaporator.
Damage may result.
Step 2 Remove all ice from the bin.
Step 3 T o st art a cleaning cycle, move the toggle switch
to the WASH position.
Step 4 Add the proper amount of Manitowoc Ice
Machine Cleaner to the water trough.
Model Amount of Cleaner
QM45 1.5 ounces (45 ml)
Step 5 Wait until the clean cycle is complete
(approximately 22 minutes) then place the toggle switch
in the OFF position, disconnect power and water
supplies to the ice machine.
Disconnect electric power to the ice machine at the
electric switch box before proceeding.
Wear rubber gloves and safety goggles ( an d/or face
shield) when handling Ice Machine Cleaner or
Sanitizer.
Ice machine cleaner is used to remove lime scale and
mineral deposits. Ice machine sanitizer disinfects and
removes algae and slime.
Step 6 Remove parts for cleaning.
A. Remove Two Thumbscrews and Water Pump
Cover (When Used).
B. Remove the Vinyl Hose Connecting the
Water Pump and Water Distribution Tube
C. Remove Water Pump
• Disconnect the water pump power cord
• Loosen the screws securing the pumpmounting bracket to the bulkhead
• Lift the pump and bracket assembly off the
mounting screws..
12 Part Number 040001360 6/14
Section 4 Maintenance
DO NOT SOAK
WATER PUMP MOTOR IN
CLEANER OR SANITIZER
SOLUTIONS
When Used - REMOVE
THUMBSCREWS AND
WATER PUMP COVER
!
Caution
1. LIFT UP
2. SLIDE BACK
3. SLIDE TO RIGHT
DISTRIBUTION
TUBE
THUMBSCREW
THUMBSCREW
LOCATING
PIN
3
2
1
.
Water Pump Removal
D. Remove the Ice Thickness Probe
Ice Thickness Probe Cleaning
• Mix a solution of Manitowoc ice machine cleaner and
water (2 ounces of cleaner to 16 ounces of water) in
a container.
• Soak the ice thickness probe a minimum of 10
minutes.
Clean all ice thickness probe surfaces and verify the ice
thickness probe cavity is clean. Rinse thoroughly with
clean water , then dry comple tely. Incomplete rinsing and
drying of the ice thickness probe can cause premature
harvest.
E. Remove the Water Distribution Tube
NOTE: At this point, the ice thickness probe can easily
be cleaned. If complete removal is desired follow the ice
thickness probe wire to the bulkhead grommet (exit
point) in the back wall. Pop the bulkhead grommet out of
the back wall by inserting fingernails or a flat object
between the back wall and the grommet and prying
forward. Pull the bulkhead grommet and wire forward
until the connector is accessible, then disconnect the
wire lead from the connector.
• Compress the side of the ice thickness probe
near the top hinge pin and remove it from the
bracket.
• Loosen the two thumbscrews, which secure the
distribution tube.
• Lift the right side of the distribution tube up off the
locating pin, then slide it back and to the right.
Do not force this removal. Be sure the locating pin is
clear of the hole before sliding the distribution tube
out.
Part Number 040001360 6/14 13
Maintenance Section 4
INNER TUBE
TAB
KEYWAY
INNER TUBE
FLOAT VALVE
BRACKET
COMPRESSION
FITTING
CAP AND
FILTER SCREEN
SHUT-OFF VALVE
SPLASH SHIELD
FLOAT
Disassembly
• Twist both of the inner tube ends until the tabs line up
with the keyways.
• Pull the inner tube ends outward.
F. Remove the Float Valve
• Turn the splash shield counterclockwise one or two
turns.
• Pull the float valve forward and off the mounting
bracket.
• Disconnect the water inlet tube from the float valve at
the compression fitting.
• Remove the cap and filter screen for cleaning.
14
Part Number 040001360 6/14
Loading...