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Scotsman CMS1002R, User Manual

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Scotsman CMS1002R User Manual Download Page 10

INITIAL START UP

Remote Condenser:

1. Check that all connections have been made.

Ice Maker:

1. Remove front panel by pulling out to unsnap.

2. Remove two screws and the control box cover.

3. Remove the evaporator cover.

4. Remove the left side service panel.

5. Check that the ON/WASH/OFF rocker switch
and the Compressor ON-OFF toggle switch are in
the OFF position, on the control box.

6. Locate and open the king (service) valve on the
receiver. Check that the crankcase heater has
been on long enough to warm the compressor
dome (about 12 hours).

7. OPEN the water supply line shut off valve.

8. Inside the control box is the shaft of the timer
and the switch assembly. Rotate the shaft of the
timer and switch assembly clockwise to where the
actuator arm on the microswitch drops off outer
cam into cam slot. See Timer Cam Positions. 

9. Move the  ON/WASH/OFF rocker switch to the
ON position.

10. Observe water fill cycle: Water pump operates
and water inlet solenoid valve OPENS, incoming
water flows from the valve through the tubing, the
reservoir fills and excess water drains out the
machine drain. At the end of the harvest cycle, the
water inlet solenoid valve will close and the water
fill cycle is complete. If the reservoir is not full,
advance the shaft of the timer clockwise into a new
harvest cycle; this opens the water valve again.
The water pump pumps water up to the water
distributor at the top of each evaporator plate,
where water is uniformly dispensed, cascades
down both sides of each evaporator plate and
drains back into the reservoir for recirculation.

11. Check that the water cascades down over
each cube mold and into the reservoir.

12. When the reservoir is full, move the
compressor ON-OFF toggle switch, to the ON
position.

13. Check operation of the freezing cycle: The
compressor is operating.The icemaking process
begins; feeling the metal parts of the evaporator
plate reveals cold temperature, very shortly ice
begins to form. Tubing will become frosted at the
top of the evaporator plate. Freezing time will
range between 13 and 15 minutes. Longer time for
temperatures above 70 degrees F. and shorter
time required when temperatures are below
70-degrees F. Average complete cycle time is
about 16 minutes.

TIMER CAM POSITIONS

MICROSWITCH

ACTUATOR

CAM &

SHAFT

HARVEST

PORTION

FREEZE

PORTION

“KING”

VALVE

ON/WASH/OFF

SWITCH

EVAPORATOR

COVER

CMS1002R

September,  1993

Page 10

Summary of Contents for CMS1002R

Page 1: ...ations 2 Environmental Limitations 3 For the Installer Machine Bin Assembly 4 For the Plumber 5 Remote Condenser 6 Coupling Instructions 7 For the Electrician 8 Final Check List 9 Initial Start Up 10 Adjustments 12 Component Description 13 Service Specifications 16 Cleaning 17 Operation 19 Service Diagnosis 21 Removal and Replacement 24 Parts lists and wiring diagrams are in the center of this man...

Page 2: ...ponents with regard to model voltage and finish A stacking kit KSCMS is required for stacking CMS1002 ice machines It interconnects the sonor bin ice level controls CMS1002 may only be stacked onto another CMS1002 The CMS1002 will fit any 30 wide Scotsman bin without a bin top Other bins require a bin top Model Number Dimensions W x D x H Basic Electrical Refrigerant Type Refrigerant Charge CMS100...

Page 3: ...ovements at any time Specifications and design are subject to change without notice Water Limitations An ice machine is a food manufacturing plant it takes 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 These general recommendations should help keep the ice maker clean 1 Filter the water used ...

Page 4: ...ll material that is packed inside the bin Ice Maker 1 Arrange for proper electric water and drain See instructions for the plumber and for the electrician 2 Position the ice storage bin in the selected location which should have a minimum room temperature of 50 degrees F and maximum room temperature of 100 degrees F 3 Inspect the bin top mounting gasket which should be flat with no wrinkles to pro...

Page 5: ...rains to be installed must conform with the local plumbing codes Use only 3 4 rigid tubing The ice machine s drain must be separate from the bin s drain Both use 3 4 FPT fittings Insulation of the bin drain is recommended Install a vertical open vent on the drain line s high point to ensure proper draining The ideal drain receptacle is a trapped and vented floor drain CONFORM TO ALL LOCAL CODES 3 ...

Page 6: ...instructions 1 Each set of precharged refrigerant lines consists of a 3 8 inch diameter liquid line and a 1 2 inch diameter discharge line Both ends of each line have quick connect couplings one end has flexible tubing that end goes to the icemaker Note The openings in the building ceiling or wall listed in the next step are the minimum sizes recommended for passing the refrigerant lines through 2...

Page 7: ...ge line The other end of the discharge line goes to the icemaker fitting marked discharge line 3 Begin tightening the couplings together by hand then using two wrenches it is important that ONLY the nut on the precharged lines be turned the other parts of the couplings must NOT be allowed to turn or the process will tear out the diaphragms and they will be loose in the refrigeration system tighten...

Page 8: ...o not switch the ice maker on at this time make certain the master and compressor switches are OFF when power is connected to the icemaker Power must be connected to the ice maker long enough in advance of start up to allow the crankcase heater to warm the compressor usually about 12 hours Scotsman Condenser Separate electrical connections are made from the ice maker to the condenser as there is l...

Page 9: ...Have all electrical and piping connections been made 7 Are the Master and Compressor switches on OFF 8 Has power been connected to the ice maker 9 Is the water supply line shut off valve installed 10 Check all refrigerant lines and conduit lines to guard against vibration or rubbing and possible failure 11 Have the bin and cabinet been wiped clean and sanitized 12 Has the Field Quality Audit form ...

Page 10: ... the end of the harvest cycle the water inlet solenoid valve will close and the water fill cycle is complete If the reservoir is not full advance the shaft of the timer clockwise into a new harvest cycle this opens the water valve again The water pump pumps water up to the water distributor at the top of each evaporator plate where water is uniformly dispensed cascades down both sides of each evap...

Page 11: ...se the harvest time if there is less than 15 seconds of harvest time after the last cube has fallen into the bin Decrease the harvest time if there is much more than 15 seconds of harvest time after the las cube has fallen into the bin Note Harvest time is dependent upon the water and air temperatures at the ice machine Do not adjust harvest time too short as this will cause a freeze up See the ne...

Page 12: ... Loosen the adjustment screw on the cam and rotate the shaft of the cam to move the top part of the assembly More of a gap between the high and low portions will yield more harvest time 2 Tighten the set screw 3 Replace the control box cover and front panel lt is important that the length of the harvest cycle allow enough time for all the ice cubes to fall from the evaporator Too short of a time w...

Page 13: ...imer Timer Switch Assembly The timer begins to turn when activated by the cube size control The outer surface or large diameter lobe of the timer cam determines the length of time for finish freezing of the ice cubes while the inner surface or small diameter lobe determines length of the harvest cycle The single pole double throw microswitch on the timer controls the power to the plug in relay coi...

Page 14: ...justable so that the ice machine will maintain a certain height of ice It will not fill any closer to the ice machine than 8 and will not work if the distance to the bottom of the bin is greater than 8 feet Because it uses sound waves a slight ticking sound can be heard coming from the bottom of the machine THE USER CAN SELECT THE AMOUNT OF ICE TO BE MAINTAINED IN THE BIN ICE LEVEL SELECTOR SWITCH...

Page 15: ...e each evaporator plate and from six holes within each distributor water flows to the cells of each side of the evaporator plates Gravity flow returns the unfrozen excess portion of water to the reservoir for recirculation Reservoir The reservoir located below the evaporators stores the inlet water charge and collects the water that flows over the evaporator plates Strainer A water strainer is loc...

Page 16: ...base of the ice machine Partial Fill Setting 21 22 from the base of the ice machine Maximum Storage Bin Interior Height 8 from the base of the ice machine OPERATING CHARACTERISTICS The values listed below are representative of values seen at a wide range of air and water temperatures and are for a normal cube size Temperatures are Condenser Ambient Air Water FREEZE CYCLE Average Discharge Pressure...

Page 17: ...f 8 Drain the reservoir again repeat step 5 9 Switch the machine to wash and continue to add fresh water to flush residual cleaner from the system Switch the Wash Off Ice switch off 10 Sanitize the ice maker and bin see Sanitize Water System 11 Replace the front liner 12 Switch the Wash Off Ice switch back on 13 Replace the front panel 14 Check the next batch of cubes to make sure all of the acid ...

Page 18: ...Replace the front panel 11 Move the master switch to ON SCOTSMAN REMOTE CONDENSER 1 Disconnect electrical power at the icemaker WARNING Disconnect electrical power before beginning 2 Wipe off any surface dust from the intake side of the condenser 3 Vacuum the coil or clean with coil cleaner 4 The coil is clean when light can be seen through the fins 5 Reconnect electrical power SANITIZE ICE STORAG...

Page 19: ...perature at which it is preset to CLOSE This will complete the electrical circuit to the timer The timer then controls the remainder of the freezing cycle The timer will keep the icemaker operating in the freezing cycle for a selected length of time This will give the ice cubes time to fully form after that selected length of time the timer will switch the icemaker into the harvest cycle through t...

Page 20: ...e sides of each evaporator plate by the warming effect of the hot gas condensing in each evaporator plate and the water cascading over the ice cubes The released ice cubes drop into the ice storage bin below At the end of the harvest cycle the timer cam will push the actuator arm to the microswitch IN If the ice level control is still CLOSED a whole new cycle will begin If the ice level control is...

Page 21: ... does not open 3 Check electrical connections to liquid line valve check coil check valve operation 4 Pump down pressure switch does not close 4 Defective switch or liquid line valve does not open or low on refrigerant check replace 5 Thermostatic Expansion valve clogged or does not open 5 Check replace TXV No ice no water over evaporators 1 Water pump does not pump 1 Check replace water pump 2 No...

Page 22: ...Cube size wrong 5 Adjust cube size 6 Hot gas valve restricted 6 Replace hot gas valve 7 Not enough water to help harvest 7 Check for restriction of water supply 8 Head pressure too low 8 Check pressure control valve Check for low refrigerant charge Ice maker stuck in harvest cycle 1 Relay coil open 1 Replace relay 2 Timer stuck in harvest cycle 2 Check for power to timer motor if power replace tim...

Page 23: ... go to D D Disconnect electrical power and test ice machine circuit by attaching a jumper wire between bin thermostat posts on circuit board part no 12 1912 01 the circuit board with the timer on it Reconnect power If machine does not start go back to machine circuit If machine starts disconnect electrical power remove jumper wire and reconnect electrical power Then go to E E Transducer or ice lev...

Page 24: ...lectrical power BEFORE removing transducer 2 Open bin door and locate the transducer socket 3 Twist inner portion of transducer counter clockwise and push up gently 4 Pull transponder down until plug connection is accessible 5 Unplug transducer and remove from the machine 6 Reverse steps 1 5 to reassemble CMS1002R September 1993 Page 24 ...

Page 25: ...engage the alignment keys in the tee BE SURE the water distributor tube is securely fastened at the notch at both sides of the evaporator plate Check identical attachment for the left water distributor tube and notch also that the distributor manifold connections at the top center of each evaporator plate is snug against the top of the plate Cube Size Control To remove the cube size control 1 Remo...

Page 26: ...rical power Inlet Water Solenoid Valve Assembly To remove the inlet water solenoid valve assembly 1 Shut OFF water supply to machine 2 Loosen and remove outlet water line from the inlet water solenoid valve assembly 3 Remove screws and pull the water solenoid valve out to gain access 4 Pull electrical cord from solenoid coil terminals 5 Remove inlet water fitting from the water solenoid valve To r...

Page 27: ...the icemaker 5 Install the new valve wrap it in wet cloths or other efficient heat sink material 6 Sweat the tubing connections to the valve 7 Connect the electrical wires to the terminals of the valve coil 8 Weigh the nameplate charge into the receiver 9 Replace all panels removed for service 10 Reconnect electrical power Thermostatic Expansion Valve 1 Remove the side service panel and top panel ...

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