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INTRODUCTION
To the owner or user: This service manual is
intended to provide you and the maintenance or
service technician with the information needed to
install, start up, clean, maintain and service this
ice system.
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location & Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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For the Plumber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Initial Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Harvest Cycle Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Lists and Wiring Diagrams are located in the
center of this manual, printed on yellow paper.
Table of Contents
September 1993
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Summary of Contents for Scotsman CMS1402R
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Page 1: Table Of Contents
Removal and Replacement ......Parts Lists and Wiring Diagrams are located in the center of this manual, printed on yellow paper. Table of Contents September 1993 Page 1 CMS1402R... -
Page 2: For The Installer
** The unit is shipped with the full charge in the receiver. For re-charging purposes, if the nameplate charge is different than this number, go by the nameplate. Use Scotsman remote condenser RC1422. Use precharged tubing kit RT2225 (25’) or RT2240 (40"). This ice system (except remote condenser) is designed to be installed indoors, in a controlled environment. -
Page 3: For The Installer: Location & Assembly
Use bolts and straps found on the back of the ice machine to secure the ice machine to the bin. When alignment and leveling are completed, tighten the bolts to secure the mounting straps. -
Page 4: Stacking
Install the panel retaining bracket onto the bottom ice machine before placing the upper unit on it. Place additional gasket onto the top edges of the bottom ice machine. Carefully lift the uncrated top unit onto the bottom one and align the two cabinets. - Page 5 FOR THE INSTALLER: Scotsman Remote Condenser Locate the condenser as near as possible to the interior location of the ice maker. Location of the condenser is limited by the specific length of precharged refrigerant tubing supplied for the application. The pre-charged tubing connects the icemaker to the remote condenser.
- Page 6 CMS1402R FOR THE INSTALLER: Coupling Instructions ////////////////////////////////CAUTION///////////////////////////////// The couplings on the sets of precharged lines are self sealing when installed properly. Carefully follow the instructions: //////////////////////////////////////////////////////////////////////////////// Initial Connections: 1. Remove the protector caps and plugs. Wipe the seats and threaded surfaces with a clean cloth to be certain that no foreign matter remains on them.
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Page 7: For The Electrician
DISCONNECT SWITCH POWER SUPPLY The Scotsman remote condenser is designed to be powered from the ice machine. There is a separate electrical junction box at the back of the ice maker for the remote condenser. Wire the remote condenser to the ice maker in accordance with local and national electric codes. -
Page 8: For The Plumber
Water Limitations: An ice machine is a food manufacturing plant, it takes in a raw material, water, and turns it into a food product, ice. The purity of the water is very important in obtaining pure ice and in maximizing product life. -
Page 9: Final Check List
Registration form been properly LEVEL ASSEMBLY filled out? Check for correct model and serial numbers from Serial nameplate, then mail to the SCOTSMAN factory. 12. Has the owner/user been given the Service Manual and SUMP DRAIN instructed how to operate and OPTIONAL... -
Page 10: Initial Start Up
COMPRESSOR ON-OFF toggle switch are in the OFF position. 2. Switch on the electrical power. Electrical power must be supplied to the ice machine for 12 hours before starting the compressor for the first time. The crankcase heater will now heat the compressor’s oil. - Page 11 14. Fill out the Warranty Registration and Customer Evaluation form. Explain to the user the maintenance requirements of the ice machine. Inform the user of the name and telephone number of the local SCOTSMAN Distributor or service agency. September 1993 Page 11...
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Page 12: Freezing Cycle Operation
CMS1402R FREEZING CYCLE OPERATION Water from the sump assembly is pumped to the water distributor system at the top of each evaporator plate. From the water distributor the water cascades by gravity over all cells of the plate and to the sump assembly below. - Page 13 The compressor will continue to run until the pump down control, sensing low side pressure, opens at 20 PSIG. WATER DISTRIBUTION INLET WATER VALVE DRAIN WATER SCHEMATIC REFRIGERATION SCHEMATIC September 1993 Page 13 CMS1402R RESERVOIR...
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Page 14: Harvest Cycle Operation
CMS1402R COMPONENT DESCRIPTION Cube Size Control This reverse acting thermostat controls the length of the freezing cycle. It is sensing the temperature of the suction line. When the suction line gets cold enough, the cube size control closes (on temperature fall) and starts the timer. A change in... - Page 15 Bin Level Control This electronic control uses sound waves to measure the distance between the bottom of the ice machine and the top of the ice in the bin. It is designed to control the machine’s ice production to maintain that distance.
- Page 16 CMS1402R COMPONENT DESCRIPTION Water Inlet Solenoid Valve The water inlet solenoid valve fills the sump assembly with water and excess water overflows out the standpipe and down the drain. This action fills and rinses the sump during each harvest cycle. The flow rate is 1 g.p.m.
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Page 17: Cleaning
CLEANING ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// A Scotsman Ice System represents a sizable investment of time and money in any company’s business. In order to receive the best return for that investment, it MUST receive periodic maintenance. Maintenance and Cleaning should be scheduled at a minimum of twice per year. - Page 18 Scale that may form on the plastic liner of a bin may be removed by scrubbing the surface of the line with a mixture of Scotsman Ice Machine Cleaner and hot water. Remove any scale prior to sanitizing.
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Page 19: Specifications
Copeland CRL3-0350-PFV-270 (single phase) Copeland CRL3-0350-TF5-270 (three phase) Ice Level Control Maximum Range = 8 feet Partial Fill Setting:= 21" - 22" from the base of the ice machine Timer 1 revolution takes 8 minutes Cube Size Control Cut In adjustable between 0... -
Page 20: Adjustments
CMS1402R ADJUSTMENTS Electrical power present in the control box can cause personal injury. Disconnect power before beginning to adjust timer. Adjustment Of The Timer & Switch Assembly One complete revolution of the cam on the timer takes eight minutes. The normal setting is three and a half minutes, as set at the factory. -
Page 21: Service Diagnosis
Reservoir leaks Inlet water valve restricted Short harvest cycle Water pressure too low September 1993 Page 21 CMS1402R PROBABLE FIX Clean inlet screen, check coil, replace valve if required Check pump motor, replace pump if motor will not run. No water in reservoir, check inlet water valve, check reservoir for leak. - Page 22 CMS1402R SERVICE DIAGNOSIS: Electrical and/or Adjustments SYMPTOM Machine does not operate Makes thick ice/freezes up Runs, makes no ice Long freeze cycle Cubes too small Cubes too large Compressor cycles on and off on pump down control Compressor will not run...
- Page 23 Compressor overheats Some frost will not hurt TXV meters too much refrigerant September 1993 Page 23 CMS1402R PROBABLE FIX Check for power to the coil, check for not opening, replace Replace head pressure control valve. Hot gas valve leaks thru, replace it...
- Page 24 CMS1402R SERVICE DIAGNOSIS: Bin Ice Level Control CONDITION Ice Machine does not run, it has power to it, the high pressure control is closed, the on/off switch is set to ON (the compressor will not operate until the liquid line valve opens, but the pump should be working if there is no ice in the bin).
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Page 25: Removal And Replacement
6. Remove screws and pull the capillary tube through the notch in the back of the control box. Remove the cube size control. To replace the cube size control, reverse the removal procedure. September 1993 Page 25 CMS1402R NOTCH IN BACK OF CONTROL BOX CUBE SIZE CONTROL... - Page 26 CMS1402R REMOVAL AND REPLACEMENT Electrical Shock Hazard. Electrical shock can cause personal injury. Disconnect power before beginning to service components. Water Pump 1. Remove front panel. 2. Unplug water pump electrical connection. 3. Drain water reservoir. 4. Use corbin clamp pliers to loosen and slide corbin clamps on hoses away from pump.
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Page 27: Refrigeration Service
There are various mechanical devices that may be used to recycle refrigerant at the field level, however, Scotsman requires that any refrigerant placed into a Scotsman ice machine meet ARI spec 700. Reclaim programs are available thru most refrigerant wholesalers. - Page 28 CMS1402R REMOVAL AND REPLACEMENT Thermostatic Expansion Valve 1. Before replaceing this valve, be certain that the valve is the cause of the problem, and cannot be adjusted. 2. Remove the front panel. 3. Discharge and recover the refrigerant. 4. Locate the TXV bulb (on the suction line), remove the clamps and bulb from the tube.