Manitowoc Ice STH003 User Manual
CM050
CM Model
Ice Machines
This manual is updated as new
Information and models are released
Visit our website for the latest manual:
www.compact-ice.com
STH003
06/06
©Manitowoc Ice, Inc.
Safety Notices
When using or servicing these Ice Machines, be sure
to pay close attention to the safety notices in this
handbook. Disregarding the notices may lead to
serious injury and/or damage to the ice machine.
Throughout this handbook, you will see the following
types of safety notices:
WARNING
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.
CAUTION
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.
2
Procedural Notices
When using or servicing these Ice Machines, be sure
to read the procedural notices in this handbook. These
notices supply helpful information that may assist you
as you work.
Throughout this handbook, you will see the following
types of procedural notices:
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 may slow you
down as you work.
NOTE: Text set off as a Note provides you with
simple, but useful extra information about the
procedure you are performing.
3
Read These Before Proceeding:
CAUTION
Proper installation, care and maintenance are
essential for maximum ice production and trouble
free operation of your Compact Ice Machine. Read
and understand this manual. If you encounter
problems not covered by this manual, do not
proceed, contact Manitowoc Ice, Inc. We will be
happy to provide assistance.
IMPORTANT
Routine adjustments and maintenance procedures
outlined in this manual are not covered by the
warranty.
We reserve the right to make product improvements at
any time. Specifications and design are subject to
change without notice.
WARNING
PERSONAL INJURY POTENTIAL
Do not operate equipment that has been, misused,
abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
WARNING
POTENTIAL PERSONAL INJURY SITUATION
This ice machine contains refrigerant charge.
Installation and brazing of the line sets must be
performed by a properly trained refrigeration
technician aware of the Dangers of dealing with
refrigerant charged equipment. The technician
must also be US Government Environmental
Protection Agency (EPA) certified in proper
refrigerant handling and servicing procedures.
4
TABLE OF CONTENTS
GENERAL INFORMATION............................. 7
MODEL NUMBERS.....................................7
ACCESSORIES........................................... 8
MODEL/SERIAL NUMBER LOCATION .......9
OWNER WARRANTY REGISTRATION........... 9
INSTALLATION .......................................... 13
LOCATION OF ICE MACHINE ..................13
ICE MACHINE HEAT OF REJECTION ......14
LEVELING THE ICE MACHINE ................15
WATER SERVICE/DRAINS ....................... 16
ELECTRICAL REQUIREMENTS................18
COMPONENT IDENTIFICATION ..............19
OPERATIONAL CHECKS ........................19
MAINTENANCE .......................................... 23
ICE MACHINE INSPECTION .................... 23
EXTERIOR CLEANING............................. 23
CLEANING THE CONDENSER ................. 23
INTERIOR CLEANING AND SANITIZING. 25
CLEANING PROCEDURE ......................... 28
REMOVAL OF PARTS FOR CLEANING AND
SANITIZING............................................. 31
ICE MAKING SEQUENCE OF OPERATION.. 39
TROUBLESHOOTING ................................. 41
DIAGNOSING AN ICE MACHINE THAT
WILL NOT RUN........................................ 41
ICE MACHINE WILL NOT HARVEST........ 43
ICE QUALITY IS POOR – CUBES ARE
SHALLOW, INCOMPLETE OR WHITE ......44
FREEZE CYCLE IS LONG, LOW ICE
PRODUCTION ..........................................45
ICE MACHINE RUNS & NO ICE IS
PRODUCED..............................................46
ANALYZING DISCHARGE PRESSURE..... 47
ANALYZING SUCTION PRESSURE .........49
5
HOT GAS VALVE..................................... 52
BIN THERMOSTAT.................................. 55
ICE PRODUCTION CHECK ...................... 57
ADJUSTING CUBE WEIGHT ................... 58
LIQUID LINE THERMISTOR .................... 59
TOTAL SYSTEM REFRIGERATION
CHARGE.................................................. 61
COMPONENT SPECIFICATIONS AND CHECK
PROCEDURES ............................................62
MAIN FUSE ............................................. 62
COMPRESSOR ELECTRICAL
DIAGNOSTICS......................................... 63
DIAGNOSING START COMPONENTS: .... 65
CYCLE TIMES, 24 HR ICE PRODUCTION AND
REFRIGERANT PRESSURE CHARTS .......... 66
REFRIGERANT DEFINITIONS ..................... 68
REFRIGERANT RE-USE POLICY ............. 69
SYSTEM CONTAMINATION CLEANUP ... 75
SEVERE SYSTEM CONTAMINATION
CLEANUP PROCEDURE ..................ERROR!
BOOKMARK NOT DEFINED.
REPLACING PRESSURE CONTROLS
WITHOUT REMOVING REFRIGERANT
CHARGE.................................................. 80
BRAZING PROCEDURES FOR DANFOSS
SOLENOID VALVES ................................ 82
FILTER-DRIERS....................................... 84
CONTROL BOARD ......................................85
WIRING DIAGRAMS .................................... 88
TUBING SCHEMATIC.................................. 87
6
GENERAL INFORMATION
MODEL NUMBERS
This manual covers the following models:
CMS050A004
WARNING
An ice machine contains high voltage electricity
and refrigerant charge. Repairs are to be
performed by properly trained refrigeration
technicians aware of the dangers of dealing with
high voltage electricity and refrigerant under
pressure.
7
ACCESSORIES
Visit our website at: www.compact-ice.com for these
optional accessories:
LEGS
Four inch adjustable legs are available.
DRAIN PUMP
Pumps waste water from ice machine to drain.
MANITOWOC ICE MACHINE CLEANER AND
SANITIZER
These are the only cleaner and sanitizer approved for
use with Compact products.
Cleaner Part Number Sanitizer Part Number
16oz 000000084 16oz 94-0565-3
CAUTION
Use only Manitowoc approved Ice Machine
Cleaner (part number 94-0546-3 original green
ice machine cleaner or 000000084 clear metal
safe ice machine cleaner) 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.
8
MODEL/SERIAL NUMBER LOCATION
The model and serial numbers are required
when
requesting information from your local Compact retailer
or Compact Ice at 800-235-9698. The model and serial
number are listed on the MODEL/SERIAL NUMBER
DECAL affixed to the ice machine
MODEL/SERIAL
NUMBER DECAL
MODEL/SERIAL
NUMBER DECAL
9
OWNER WARRANTY REGISTRATION
CARD
GENERAL
The packet containing this manual also includes
warranty information. Warranty coverage begins the
day you purchase your new ice machine.
Compact CM Series
Limited Ice Machine Warranty
Subject to the exclusions and limitations below,
Manitowoc Ice, Inc. (“Manitowoc Ice”) warrants this
CM Series Ice Machine (the “Product”) against
defects in material or workmanship as follows:
1. Labor. For a period of ninety (90) days from the
date of purchase by the consumer (“Purchaser”),
if the Product is determined to be defective,
Manitowoc Ice shall, at its option, replace the
Product or pay the labor charges to any authorized
Manitowoc Ice service facility to repair the
Product. After expiration of the ninety day (90)
period referred above, the Purchaser must pay all
labor charges.
2. Parts. In addition, for a period of twelve (12)
months from the date of purchase by the
Purchaser, if the Product is determined to be
defective, Manitowoc Ice shall, at its option,
replace the Product or provide new or rebuilt
replacement parts for the Product at no charge.
REPAIR OR REPLACEMENT AS PROVIDED ABOVE
IS THE PURCHASER’S SOLE AND EXCLUSIVE
REMEDY UNDER THIS LIMITED WARRANTY.
10
This limited warranty only applies to the original
Purchaser of the Product and is not transferable. This
limited warranty is valid only in the United States. This
limited warranty does not apply to: (1) any cost or
expense associated with shipping, accessing,
removing, installing or reinstalling the Product to obtain
warranty service, including, without limitation,
expenses related to remodeling or repairing any
flooring, cabinetry or the like; (2) periodic or routine
maintenance; (3) repair or replacement of the Product
or parts due to normal wear and tear; (4) defects or
damage to the Product or parts resulting from misuse,
abuse, neglect, or accidents; (5) defects or damage to
the Product or parts resulting from improper or
unauthorized alterations, modifications, or changes; (6)
any Product that has not been installed in accordance
with the instruction manual or technical instructions
provided by Manitowoc Ice; and (7) any Product that
has not been maintained, cleaned or sanitized in
accordance with the instruction manual or technical
instructions provided by Manitowoc Ice. To the extent
that warranty exclusions are not permitted under some
state laws, these limitations or exclusions may not
apply to you.
EXCEPT AS STATED IN THE FOLLOWING
SENTENCE, THIS LIMITED WARRANTY IS THE
SOLE AND EXCLUSIVE WARRANTY OF
MANITOWOC ICE WITH REGARD TO THE
PRODUCT. ALL IMPLIED WARRANTIES ARE
STRICTLY LIMITED TO THE DURATION OF THE
LIMITED WARRANTY APPLICABLE TO THE
PRODUCTS AS STATED ABOVE, INCLUDING BUT
NOT LIMITED TO, ANY WARRANTY OF
MERCHANTABILITY OR OF FITNESS FOR A
PARTICULAR PURPOSE. Some states do not allow
limitations on how long an implied warranty lasts, so
the above limitation may not apply to you.
11
IN NO EVENT SHALL MANITOWOC ICE OR ANY OF
ITS AFFILIATES BE LIABLE TO THE PURCHASER
OR ANY OTHER PERSON FOR ANY INCIDENTIAL,
CONSEQUENTIAL OR SPECIAL DAMAGES OF ANY
KIND ARISING FROM OR IN ANY MANNER
CONNECTED WITH THE PRODUCT, ANY BREACH
OF THIS LIMITED WARRANTY, OR ANY OTHER
CAUSE. Some states do not allow the exclusion or
limitation of incidental or consequential damages, so
the above limitation or exclusion may not apply to you.
This limited warranty gives the Purchaser specific legal
rights, and the Purchaser may also have rights that
vary from state to state or from one jurisdiction to
another. To obtain warranty service or information
regarding the Product, please contact us at:
MANITOWOC ICE, INC.
2110 So. 26th Street
P.O. Box 1720
Manitowoc, WI 54221-1720
Telephone: 800-235-9698
In order to obtain warranty service, the Purchaser must
present proof of purchase which shows that the
Purchaser was the original purchaser and that the
Product is within the warranty periods described
above.
To secure prompt and continuing warranty service, the
warranty registration card must be completed and sent
to Manitowoc Ice within thirty (30) days from the date
of purchase by the Purchaser. Complete the enclosed
registration card and send it to Manitowoc Ice at the
address shown above. Retain a copy for your record.
12
INSTALLATION
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.
• Air temperature: must be at least 50ºF (10ºC) but
must not exceed 110ºF (43ºC).
• 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.
Top/Sides 5" (127 mm)* 5" (127 mm)*
Back 5" (127 mm)* 5" (127 mm)*
Self-Contained
Air-Cooled
*NOTE: The ice machine may be built into a cabinet.
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.
CAUTION
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.
Self-Contained
Water-Cooled
13
ICE MACHINE HEAT OF REJECTION
Heat of Rejection*
Air Conditioning** Peak
1,145 2,300
* 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-contained
air-cooled ice machines are installed.
14
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. Use a level to check the levelness 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 or legs on each corner of the base of the ice
machine as necessary.
3. Check the levelness of the ice machine after each
adjustment.
4. Repeat steps 2 and 3 until the ice machine is level
from front to back and from side to side.
Levelers
Legs
15
WATER SERVICE/DRAINS
WATER SUPPLY
Local water conditions may require treatment of the
water to inhibit scale formation, filter sediment, and
remove chlorine odor and taste.
IMPORTANT
If you are installing a Manitowoc water filter
system, refer to the Installation Instructions
supplied with the filter system for ice making water
inlet connections.
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 psig (5.5 bar) obtain a
water pressure regulator from your Manitowoc
distributor.
• Install a water shut-off valve for ice making potable
water.
• Insulate water inlet lines to prevent condensation.
• Local, state or city codes may require an air gap.
Contact a local plumber for code requirements.
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.
16
WATER SUPPLY AND DRAIN LINE
SIZING/CONNECTIONS
Fitting
Ice Machine
Tubing Size Up to
Fitting
Ice Machine
Water
Pressure
Water
Temperature
diameter
min. inside
1/4" (.64 cm)
Tubing
ID Copper
1/4" (.64 cm)
80 psi (5.5 bar) Max
20 psi (1.38 bar) Min
35°F (1.7°C) Min.
90°F (32.°C) Max.
diameter
3/4" (1.9 cm)
minimum inside
3/4" (1.9 cm)
-----
-----.
3/8" (.96 cm) ID
Hose Barb
3/8" (.96 cm)
-----
-----
minimum
Hose
Water Inlet
Ice Making
Bin Drain
17
Drain Pump
Note: If air temperature is less than 60 F (15.5 C) water temperature must be equal or greater than 50°F (10°C).
ELECTRICAL REQUIREMENTS
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).
• 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.
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 SPECIFICATIONS
WARNING
The ice machine must be grounded in accordance
with national and local electrical code.
Ice
Machine
Voltage
Phase
Cycle
Max. Fuse/
Circuit
Breaker
CM50 115/1/60 15 amp 4.1
GFCI REQUIREMENTS
If GFCI (ground fault circuit interrupter) is required by
local electrical code, it must be a breaker type.
Minimum
Circuit
Amps
18
COMPONENT IDENTIFICATION
Cont rol P ane l
Evaporator
Compartment
Wa ter
Bin L ight
Shutter s
Wat er
Trou gh
Bin
Thermostat
Adjustment
Water
Bin
Electrical
Drain
Pu mp
Drain
Water Inlet
Ref rigeration
19
r
Not e: Evapor at or
removed f or
clarit y
Ev aporator
Bucket
Water S upply
Line
Spray Bar
Spray
Nozzles
Wa ter
Pump
Evaporato
Wa ter
Shutter
Water
Control
20
OPERATIONAL CHECKS
Routine adjustments and maintenance procedures
outlined in this manual are not covered by the warranty
WATER INLET VALVE
The water inlet valve energizes in the harvest cycle.
The water level will rise and flow out the overflow tube
and down the drain. Verify the overflow tube is in
place in the water trough. 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.
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.
CLEAN (GREEN)
Pressing the “Clean” button will initiate a clean
cycle. The clean light will flash during the clean
cycle for one minute to indicate the proper time to
add ice machine cleaner or sanitizer.
21
SAFETY TIMERS
The control board has the following nonadjustable 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
22
MAINTENANCE
ICE MACHINE INSPECTION
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.
EXTERIOR CLEANING
Clean the area around the ice machine as often as
necessary to maintain cleanliness and efficient
operation.
Sponge any dust and dirt off the outside of the ice
machine with mild soap and water. Wipe dry with a
clean, soft cloth.
A commercial grade stainless steel cleaner/polish can
be used as necessary.
CLEANING THE CONDENSER
WARNING
Disconnect electric power to the ice machine at
the electric service switch before cleaning the
condenser.
CAUTION
If you are cleaning the condenser fan blades with
water, cover the fan motor to prevent water
damage.
ONLY
CONDENSER
FIN COMB
COMB
DOWN
23
AIR-COOLED CONDENSER
A dirty condenser restricts airflow, resulting in
excessively high operating temperatures. This reduces
ice production and shortens component life. Clean the
condenser at least every six months. Follow the steps
below.
WARNING
The condenser fins are sharp. Use care when
cleaning them.
1. The washable aluminum filter on self-contained
air-cooled ice machines is designed to catch dust,
dirt, lint and grease. This helps keep the
condenser clean. Clean the filter with a mild soap
and water solution.
2. Clean the outside of the condenser with a soft
brush or a vacuum with a brush attachment. Clean
from top to bottom, not side to side. Be careful not
to bend the condenser fins.
3. Shine a flashlight through the condenser to check
for dirt between the fins. If dirt remains:
a) Blow compressed air through the condenser
fins from the inside. Be careful not to bend the
fan blades.
b) Use a commercial condenser coil cleaner.
Follow the directions and cautions supplied
with the cleaner.
4. Straighten any bent condenser fins with a fin
comb.
5. Carefully wipe off the fan blades and motor with a
soft cloth. Do not bend the fan blades. If the fan
blades are excessively dirty, wash with warm,
soapy water and rinse thoroughly.
24
INTERIOR CLEANING AND SANITIZING
CAUTION
Use only Manitowoc approved Ice Machine
Cleaner (part number 000000084 clear metal
safe ice machine cleaner) 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
.
CAUTION
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.
WARNING
Wear rubber gloves and safety goggles (and/or
face shield) when handling Ice Machine Cleaner
or Sanitizer.
WARNING
Disconnect all electric power to the ice machine
before cleaning and sanitizing.
25
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.
CAUTION
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.
WARNING
Follow all labels and warnings on cleaner and
sanitizer bottles.
NOTE: All ice must be removed from the bin.
Step 1 Prepare 4 oz (1/2 cup) of undiluted Manitowoc
Ice Machine Cleaner (part number 000000084 only) in
a container that will fit easily under the lifted water
shutters.
26
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.
Step 4 Wait 3 minutes until the Clean light flashes,
then add the prepared Manitowoc Cleaner by lifting 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 940565-3 only) in a container that will fit into the same
area.
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.
27
Loading...