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CS55 SERVICE DIAGNOSIS

Low Ice Capacity ..................... Leaky inlet water

Replace valve

............................................ Non-condensable  

Replace refrigerant

............................................ gas in the system
............................................ High Head Pressure

Dirty condenser,

............................................

Worn fan motor,

............................................

High air temperature

............................................

High water temperature

............................................ High air temp.

Relocate machine or water line.

............................................ Overcharge

Replace the refrigerant

............................................ Restricted system

Replace the drier and refrigerant

Poor harvest ............................ Too short defrost

Replace cube size control

............................................ Not enough water

Check water supply

............................................ Hot gas valve

Replace

............................................ Inlet water valve pluggedClean or replace
............................................ Air and water temp

Try to change location

............................................ too low

No harvest ............................... Cube size control 

Replace

............................................ does not work
............................................ Hot gas valve 

Replace

............................................ does not work
............................................ Water inlet valve

Replace

............................................ does not work

Excessive water....................... Drain plugged

Clean drain

in ice storage  bin

December 1987

Page 14

Summary of Contents for CS55

Page 1: ...f Contents SPECIFICATIONS Page 1 FOR THE INSTALLER Page 2 FOR THE PLUMBER Page 3 INSTALLATION Page 4 INITIAL START UP Page 5 HOW IT WORKS COMPONENT DESCRIPTION Page 6 COMPONENT LOCATION Page 7 HOW IT WORKS WATER Page 8 HOW IT WORKS REFRIGERATION Page 9 HOW IT WORKS REFRIGERATION Page 10 OPERATION ADJUSTMENT OPERATING CHARACTERISITCS Page 11 SANITIZING AND CLEANING Page 12 SERVICE DIAGNOSIS Page 13...

Page 2: ...safety and performance They meet or exceed the standards of UL and NSF Scotsman assumes no liability or responsibility of any kind for products manufactured by Scotsman that have been altered in any way including the use of any parts and or other components not specifically approved by Scotsman Scotsman reserves the right to make design changes and or improvements at any time Specifications and de...

Page 3: ...ervice Access Allow enough space at the back of the cabinet for the utilities to be connected Allow enough space for the machine to be pulled out from its installed location Do not build a floor in front of the machine that would prevent its removal Air circulation The front panel MUST remain unobstructed Do not block with any type of door or curtain If the unit is built in it will pull air in fro...

Page 4: ...s Usually an electrical permit and the services of a licensed FOR THE PLUMBER Water supply and drain connections 1 The recommended water supply line is a 1 4 o d copper tube the water pressure must have a minimum incoming pressure of 20 psig 2 Connect the tubing to the 3 4 hose coupling thread water inlet fitting at the back of the icemaker An optional adaptor to go from the 3 4 hose coupling thre...

Page 5: ...ectrical circuit 5 Is the water supply line shut off valve installed and is the water turned on 6 Have the bin interior and the cabinet exterior been wiped clean 7 Are all internal parts in place including the spray platform and curtain 8 Have the internal refrigerant lines been checked for rubbing and chaffing 9 Has the machine been installed where it is indoors in a controlled environment with a...

Page 6: ...ome water will drip from the reservoir as the machine runs This is normal 9 After about 20 minutes the machine will begin to release the ice this is called the harvest cycle Observe the first cube harvest Check the size of the ice cubes Note The normal size of the ice cube has a 1 4 depression in the wide end If the cubes are not filled out adjust the machine to make larger ice cubes by turning th...

Page 7: ...AY PLATFORM JET CAP SPINNER DISC WATER PUMP EVAPORATOR BIN DRAIN CLEANING SWITCH WATER INLET VALVE HOT GAS VALVE COMPRESSOR CUBESIZE ON OFF BIN LEVEL CONTROL TUBE BIN THERMOSTAT CONTROL BOX RESERVOIR FILL TUBE WATER RESERVOIR RESERVOIR OVERFLOW TUBE ...

Page 8: ...ine 21 g p m This water flows to the top of the evaporator and then down into the reservoir Water Purge Drain Valve The purge valve opens during the harvest cycle and when the pump is on water from the pump discharge is diverted to the drain This flushes out the reservoir Bin Thermostat Control The bin thermostat control body is located in front of the control box just beside the cube size control...

Page 9: ...ted back to the condenser The harvest cycle is complete and the freezing cycle restarts The automatic icemaking process continues until the bin is full of ice and the bin thermostat senses a colder temperature The bin thermostat then opens the circuit to all components and the automatic icemaking process stops WATER PUMP ON DURING FREEZE DRAINS WATER TO EVAPORATOR INLET WATER VALVE OPEN DURING HAR...

Page 10: ...quid refrigerant flows through the liquid line and the liquid line filter drier After the filter drier the liquid refrigerant enters the metering device a capillary tube After passing the restriction of the capillary tube the refrigerant enters an area of relative low pressure the evaporator In the tubing of the evaporator the liquid refrigerant expands and evaporates absorbing heat from the evapo...

Page 11: ...alve the hot gas solenoid When this valve opens the refrigerant gas follows the path of least resistance and flows through the tubing from the hot gas valve to the evaporator where the ice cubes are frozen At the evaporator the high temperature gases are cooled by the cold temperatures of the cube mold and condense into liquid transferring heat to the mold which warms up and releases the cubes The...

Page 12: ...ew located under front panel on control box cover clockwise one eight turn at a time until the ice level that the machine maintains is correct To decrease the ice level in the storage bin Rotate the bin thermostat adjustment screw counterclockwise one eight turn at a time until the ice level is correct CORRECT SIZE TOO SMALL LITTLE OR NO ICE IN THE CENTER OF THE CUBE TOO BIG THICK BULGE OF SOLID I...

Page 13: ... the water shut off valve 4 Unplug the power cord to disconnect electrical power to the icemaker 5 Remove the front panel 6 Clean the air cooled condenser fins using a vacuum whisk broom brush or if needed coil cleaner The icemaking capacity of this machine is reduced by a dirty condenser coil 7 Remove the ice from the bin 8 Remove curtain by pulling forward on the left end and then pulling the cu...

Page 14: ... charge Cubes too small Cube size control Check and adjust for set too warm proper operation Partially restricted Blow charge evacuate cap tube with new drier weigh in nameplate charge Moisture in system Same as above Overcharged Same as above Undercharged Same as above look for a leak Cloudy cubes Spray nozzels Clean plugged Needs cleaning Clean with Scotsman Ice Machine Cleaner Irregular size So...

Page 15: ... the refrigerant Restricted system Replace the drier and refrigerant Poor harvest Too short defrost Replace cube size control Not enough water Check water supply Hot gas valve Replace Inlet water valve pluggedClean or replace Air and water temp Try to change location too low No harvest Cube size control Replace does not work Hot gas valve Replace does not work Water inlet valve Replace does not wo...

Page 16: ...ol box cover to gain access to the cube size control body Remove screws and dismount cube size control from control box Disconnect electrical wires from cube size control 4 At the top of the machine unclip cube size thermostat tube holder from evaporator retain clips and tube assembly Pull cube size control capillary tube from the tube and remove complete cube size control from the ice maker 5 Ins...

Page 17: ...ical wires from inlet water valve 5 Disconnect water lines to and from water valve 6 Remove valve from icemaker 7 Reverse removal procedure to replace Water Pump 1 Disconnect ice maker from electrical power 2 Remove top panel 3 Open ice bin door pull up through top and remove 4 Remove curtain by pulling forward and out on the left end 5 Pull out spray platform and disconnect hose 6 Remove screw fr...

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