Service Manual - Scotsman Ice Systems
Contents
1. 1202 amp 1402 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 Table of Contents FOR THE INSTALLER AIRFLOW ON AIR COOLED MODELS UTILITY CONNECTION LOCATIONS Back Views FOR THE INSTALLER Location amp Assembly FOR THE ELECTRICIAN FOR THE PLUMBER FINAL CHECK LIST INITIAL START UP FREEZING CYCLE OPERATION HARVEST CYCLE HOT GAS BYPASS COMPONENT DESCRIPTION CLEANING ADJUSTMENTS SYSTEM SPECIFICATIONS CME1202 SYSTEM SPECIFICATIONS CME1402 SERVICE DIAGNOSIS Electrical and or Adjustments SERVICE DIAGNOSIS Refrigeration and or Mechanical SERVICE DIAGNOSIS Ice Level Control Circuit REMOVAL AND REPLACEMENT REFRIGERATION SERVICE R 404A INFORMATION LIQUID CHARGING Parts Lists and Wiring Diagrams are located in the center of this manual printed on yellow paper This manual was printed on recycled paper Note this symbol when it appears in the manual It indicates a potential hazard Keep this manual for future reference AWARNIN G January 1995 Page 1 1202 amp 1402 FOR THE INSTALLER These machines will fit Scotsman s ice storage bin 48 wide BH900 and with adapters Scotsman s ice storage bins BH1000 with KBT21 or BH1360 They will stack with kits onto the following ice machines 12022. POSTS MENTIONED IN D ABOVE January 1995 Page 26 Sonar Sonar is Scotsman s ultrasonic device for measuring ice level and switching the ice machine on and off It consists of a control board transducer level selector switch and transformer oonar Service Diagnosis Step 1 Determine if it s a bin control problem Machine will not switch on Reset high pressure cut out Jump the two posts on the circuit board marked bin thermostat If the machine starts the sonar system needs to be checked Out If the machine does start something else Is wrong oonar Service Diagnosis Step 2 If itis a sonar problem check the board 12 volts to board If not check the transformer When 15 called for the _ Check the relay the board to NO should be closed If they are open REPLACE THE BOARD NOT THE TRANSDUCER oonar Service Diagnosis Step 3 If the red light is Check the selector switch and harness Jump out the two outside the board where the sel switch harness plugs on The indicator light should come machine should start Sonar Service Diagnosis Step 4 If the red light is not on and jumping the two outside pins does work check the transducer
3. CME1202 or CME1402 Twist and pull the transducer UP to remove it CME865 and CME1002 Twist and pull the transducer DOWN remove it iagnosis clean if the face of the transducer is sound is normal Examine the screen and face of the transducer wet dry it and try it again Sonar Service D If the face of the transducer is If the screen is dirty O ED O V C C O 5 P Ev C Eun m t O aa LLI L O 27 Ticking Check Sonar Service Diagnosis Check Switch power and check the transducer against a hard flat surface Try a NEW transducer if that does not fix the machine replace the BOARD but re use the original transducer itis VERY UNLIKELY that BOTH the transducer and the BOARD have failed at the same time Sonar Service Diagnosis Check Transducer Resistor green and white wires should be about 260 270 ohms REMOVAL AND REPLACEMENT Water Distributor Tubes And Manifold Tubes To remove the water distributor tube and manifold tube 1 Remove the front panel 2 Slide the water distributor tube to the front about 1 8 inch along the top of the evaporator plate until the water distributor tube can be unsnapped from the flexible notch and
4. CME1402 use KSCMS48 51202 or CMS1402 use KSCMS48 1462 use KSMCM48 includes legs The stacking kit includes gaskets and trim strip Heavy duty leg kits are recommended for stacking See sales support literature for additional kits that may be required for certain installations The normal finish for the machine is enamel An optional stainless steel panel kit SPKCMSA8 be field installed It contains a stainless steel top left side panel an overlay right side panel and front panels ocotsman Ice Systems are designed and manufactured with the highest regard for safety and performance They meet or exceed the standards of U L N S F and C U L 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 ocotsman reserves the right to make design changes and or improvements at any time opecifications and designs are subject to change without notice Model Number Dimensions Basic Minimum X Maximum Refrigerant Condenser w o bin Electrical Circuit Fuse Charge Type W x D x H Ampacity Size R 404A CME1402AE 3A 48 24 x 276 208 230 60 3 15 20 64 oz Air CME1402WE 3A 48 x 24 x 2716 208 230 60 3 13 5 20 62 oz Water CME1402AE 32A 48 x 24 x 27 208 230 60 1 22 3 30 6
5. GAS BYPASS When the timer switches the ice maker into the harvest cycle the finish relay is de energized and the hot gas valve and inlet water valve OPEN Then high pressure high temperature gas refrigerant being discharged from the compressor is diverted from the condenser through the hot gas solenoid valve into each evaporator plate During this cycle the refrigerant bypasses the condenser Both the compressor and the water pump are operating WATER DISTRIBUTION The finished ice cubes are released from the 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 in the microswitch actuator arm If there is no ice close to the bin level control s DRAIN RESERVOIR transducer a whole new cycle will begin If there is ice within 8 of the base of the machine when the WATER SCHEMATIC bin level control is set for full the ice maker will shut OFF WATER FAN MOTOR HOT GAS VALVE MANIFOLD CONDENSER Rn IN EVAPORATOR it WATER INLET VALVE du A LER ERR ER CS RT IB ILLLLLI JS DISCHARGE COMPRESSOR ACCUMULATOR RESERVOIR LINE REFRIGERATION SCHEMATIC January 1995 Page 14 COMPONENT DESCRIPTION C
6. LINES LINES AND AND BUILDING DRAIN BUILDING DRAIN P WATER SUPPLY AND DRAIN CONNECTION January 1995 Page 8 FINAL CHECK LIST 1 Is the cabinet in a room where ambient temperatures are within the minimum and maximum temperatures specified 2 15 there at least six inches clearance at the left and back sides of the cabinet for proper air circulation Air Cooled models 3 Has water supply pressure been checked to insure a minimum of 20 PSIG and a maximum of 80 PSIG operating pressure 4 s the cabinet level 5 Check that any shipping material has been removed from inside the cabinet 6 Check that the reservoir is properly secured to the bottom of the evaporator plates 7 Have all electrical water and drain connections been made HAND SHUT OFF VALVE HAND SHUT OFF VALVE OPTIONAL FILTER CME1202 amp CME1402 8 Is the water supply line shut off valve installed and electrical wiring properly connected 9 Check all refrigerant lines and conduit lines to guard against vibration or rubbing and possible failure 10 Have the bin and cabinet been wiped clean 11 Has the Manufacturers Registration form been properly filled out Check for correct model and serial numbers from Serial nameplate then mail the completed card to the SCOTSMAN factory 12 Has the owner user been given the Service Manual and instructed how to operate and maintain the ice maker 13 Has the owner been give
7. adjust harvest time too short or the machine will not harvest all the ice The harvest time is set by loosening the set screw on the timer cam rotating the shaft until the opening between the cams is either increased or decreased and re tightening the set screw More of an opening between the high parts of the two cams more harvest time An adjustment of the cube size control may be needed after the harvest time has been changed Check cube size again 14 Check Bin Ice Level Control With the ice maker in the harvest cycle place something solid directly below the transducer socket located in the base to the left of the evaporators The machine will then switch off at the END OF THE HARVEST CYCLE Within seconds after removal of the obstruction the ice maker will restart The bin level control has two positions Full and Partial Full is about 8 from the bottom of the transducer socket Note The unit will make one batch of ice when full if switched Off and then On 15 Wash out the bin with clean potable water 16 Replace all covers panels and screws 17 Fill out the Warranty Registration and Customer Evaluation form and send it in Explain to the owner user the significant specifications operation and maintenance requirements of the ice machine Inform the owner of the name and telephone number of the local authorized SCOTSMAN Distributor or service agency January 1995 Page 12 1202 amp 140
8. filter dryers are recommended e Always replace the dryer when repairing a leak or replacing a refrigeration component e Evacuate the system with a good vacuum pump to 300 microns or less If the triple evacuation method is used the vacuum should be broken each time with dry nitrogen not refrigerant Evacuation must be from both sides of the system eWeigh in or measure in the nameplate charge Recharge into the high side If an ice machine is to be discarded and still contains refrigerant Scotsman recommends that the refrigerant be recovered reclaimed or recycled so that it is not discharged into the air May 1995 Page 29 1202 amp CME1402 R 404A INFORMATION This ice machine uses R 404A refrigerant and polyolester oil Do NOT one Pressure Temperature Chart for HP62 use mineral oil in this refrigeration system R 404A is a Near Azeotrope so liquid charging is required See the VAPOR VAPOR next page TEMP PRES TEMP PRESS e When the system is serviced a special liquid line drier is required Itis DEG F PSIG DEG PSIG included with replacement compressors 20 17 70 146 HP62 is not compatible with mineral oil so these ice machines use 18 18 72 150 Polyolester oil Polyolester oil absorbs water very easily When one of 16 20 74 155 these refrigeration systems is opened for service it must be re sealed 14 21 76 161 as soon as possible 15 minutes maximum 12 23 78 166 Special leak
9. the Water Regulating Valve Water Cooled models maintain a constant discharge pressure by varying the flow of water thru the water cooled condenser The discharge pressure should be set for 220 PSIG If change is required attach a refrigeration gage manifold to the ice machine service ports and check the discharge pressure in a freeze cycle Adjust the stem of this valve until 220 PSIG is achieved ADJUSTMENT OF THE WATER REGULATING VALVE January 1995 Page 20 ADJUSTMENTS Adjustment Of The Timer amp Switch Assembly Electrical power present in the control box can cause personal injury Disconnect power before beginning to adjust timer AWARNING One complete revolution of the the timer takes eight minutes The normal setting is three and a half minutes as set at the factory It 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 will cause the evaporator to freeze up and stop ejecting ice into the bin Too much time wastes ice making Capacity energy and water Adjustment of the harvest cycle may require a corresponding adjustment of the cube size control Rotating the shaft of the timer cam clockwise will allow putting the machine into either the freezing cycle or harvest cycle as required in the cleaning instructions CME1202 amp CME1402 To Adjust The Timer amp Switch Assembly The l
10. the coil of the relay and the unit is in the freeze cycle When the microswitch button is released the power to the relay is stopped and the unit goes into harvest The microswitch is actuated by a cam assembly directly connected to the timer motor One complete rotation of the cam will take eight minutes Harvest is preset at three and one half minutes but is adjustable High Pressure Safety Control This is a manual reset control that shuts down the ice maker should the discharge pressure ever reach 450 PSIG air cooled or 400 PSIG water cooled Found below the control box CUBE SIZE CONTROL CONTROL SWITCH DETAIL HB BN n Hi Pressure Safety Push To Reset March 1995 Page 15 1202 amp 1402 COMPONENT DESCRIPTION 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 The control is adjustable so that the ice machine will maintain a certain height of ice When set at FULL it will not allow the machine to fill the bin any closer to the ice machine than about 8 and it 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
11. too high Advise user Cubes too small Cubes too large Cube size set wrong Adjust cube size Cubes size control stuck closed Water inlet valve leaks through Replace cube size control Replace inlet water valve and adjust cube size control January 1995 Page 24 CME1202 amp CME1402 SERVICE DIAGNOSIS Refrigeration and or Mechanical SYMPTOM POSSIBLE CAUSE PROBABLE FIX Poor harvest Too short harvest time Check and adjust harvest time Restriction of incoming water Check supply filter strainer and valve Hot gas valve does not open Check for power to the coil check for not opening replace Not enough refrigerant Locate leak recover repair replace drier evacuate and weigh in nameplate charge Cube size too small Adjust with cube size control Unit cycles off during freeze or Hi temperature switch opens and Hot gas valve leaks thru replace it harvest closes Loose connection on PC board Check and replace P C board Low capacity High head pressure from dirty Clean condenser repair fan condenser faulty fan motor or motor or control fan control Non condensable gas in the Recover system evacuate and system weigh in nameplate charge Poor air circulation or extreme hot Relocate the cabinet or provide location ventilation Overcharge of refrigerant Recover evacuate and weigh in nameplate charge Cube size too big unit runs out of Adjust cube size co
12. 2 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 WATER DISTRIBUTION and to the sump assembly below At the beginning of the freezing cycle the electrical circuit is completed to the compressor and the WATER water pump The water pump operates VALVE continuously through both the freezing cycle and the harvest cycle During the freezing cycle the hot gas solenoid valve and the water inlet solenoid valve are CLOSED When the ice cubes are partially formed the cube size control sensing bulb attached to the suction line will CLOSE and connect power to the timer motor The timer then controls the remainder of the freezing cycle The timer will keep the ice maker operating in the DRAN RESERVOIR freezing cycle for a selected length of time This will give the ice cubes time to fully form after WATER SCHEMATIC which the timer will switch the ice maker into the harvest cycle through the contacts of the timer assembly microswitch HOT GAS VALVE conpenser FAN MOTOR WATER MANIFOLD m ur m _ EVAPORATOR WATER INLET VALVE ei COMPRESSOR ACCUMULATOR WATER PUMP RESERVOIR REFRIGERATION SCHEMATIC January 1995 Page 13 1202 amp 1402 HARVEST CYCLE HOT
13. 4 oz Air CME1402WE 32A 48 x 2435 x 27 208 230 60 1 20 9 30 62 oz Water CME1402AE 6A 48 x 24 x 27 230 50 1 64 oz Air CME1402WE 6A 48 x 24 x 27 230 50 1 62 oz Water CME1202AE 3A 48 x 24 x 27 208 230 60 3 13 8 20 64 oz Air CME1202WE 3A 48 x24 x 271 208 230 60 3 12 4 20 62 oz Water CME1202AE 32A 48 x 24 x 27 208 230 60 1 21 6 30 64 oz Air CME1202WE 32A 48 x 24 x 27 208 230 60 1 18 6 30 62 oz Water CME1202AE 6A 48 x 2435 27 230 50 1 64 oz Air CME1202WE 6A 48 24 x 27 230 50 1 62 oz Water Minimum Circuit Ampacity is used to determine wire size and type per the National Electric Code If the numbers listed above are not the same as the nameplate go by the nameplate Or HACR circuit breakers This ice system is designed to be installed indoors in a controlled environment January 1995 Page 2 AIRFLOW ON AIR COOLED MODELS NAMEPLATE IS ON THE BACK PANEL MODEL NUMBER SERIAL NUMBER A C SUPPLY VOLTAGE MINIMUM CIRCUIT AMPACITY WIRES MAXIMUM FUSE SIZE HERTZ HEATER WATTS PHASE REFRIGERANT CHARGE 02 MOTORS VOLTS RLA FLA W HP LRA COMPRESSOR FAN DRIVE OTHER DESIGN PRESSURE LOW HIGH OR TYPE CIRCUIT BREAKER FAIRFAX OPERATION FAIRFAX SOUTH CAROLINA U S A MODEL NUMBER SERIAL NUMBER VOLTS HERTZ PHASE MAXIMUM FUSE SIZE REFRIGERANT A Serial Number Plate is Located Behind The CME1202 amp CM
14. D REPLACEMENT AWARNING 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 5 Remove screws retaining pump to bracket 6 Pull pump out of ice machine 7 Reverse to reassemble 8 Replace front panel 8 Reconnect electrical power Transducer 1 Disconnect electrical power BEFORE removing transducer 2 Remove the front panel and locate the transducer socket 3 Twist inner portion of transducer counter clockwise and push up gently 4 Unplug transducer and remove from the machine 5 Reverse steps 1 4 to reassemble 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 INLET WATER VALVE 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 replace the inlet water valve assembly reverse the removal procedures Bin Ice Level Control Circuit Board 1 Disconnect Electrical Power before removing circuit board 2 Remove
15. E1402 CHARGE 02 Front Panel AIR FLOWS IN THE FRONT AND OUT THE BACK ET S 4 M IL n 5 y lepram ami e m m ami m f 4 is P d j e s j j 1 4 1 j i 1 4 E t ae x N 6 4 57 wine E m f ind j pam Bop _ we ee eer w aN e o man e eae WINS i bop ian 8 i f t p i i i i T p i 1 a i i I f E E f t R i L Fog a a x H N d F dy d P ti d 4 T 77 gt 4 4 4 Y v te ppc m 2 N we 4 bar 4 January 1995 1202 amp 1402 UTILITY CONNECTION LOCATIONS Back Views CONDENSER FINS MAIN POWER LEADS Air Cooled ATER INLET 4 1 3 8 FLARE 15 69 IN 39 9 6 30 IN 16 0 CM 20 75 IN SUMP DRAIN ZEN a Spe SAT 21 82 IN 55 4 CM 29 50 IN a 74 9 CM MATN L
16. EADS CONDENSER INLET i X 1 0 CM 3 8 IN FPT Water Cooled WATER INLET BACK 3 8 IN MALE FLARE bii Sie a iN zl 15 25 IN Me 38 7 8 91 IN 0 25 IN 15 9 o SUMP DRAIN LUNDENSER DRAIN 17 18 IN 436 tM WATER ONLY 9 37 IN 49 2 20 56 IN 52 2 CM 29 50 IN 74 9 CM January 1995 Page 4 1202 amp 1402 FOR THE INSTALLER Location amp Assembly Location OPERATIONAL LIMITATIONS inspection the unit IS ready for MINIMUM MAXIMUM installation It is important that the machine be 0 0 installed INDOORS in a location where it has Air Temperature 50 F 100 F enough space around it to be accessible for Water Temperature 40 F 1000F back for air circulation on air cooled models Try to avoid hot dirty and crowded locations Be sure that the location for the machine is within the 5 environmental limitations Storage Bin Tip the storage bin on its back using parts of the carton to protect the exterior finish Install the casters use a heavy duty leg kit if stacking two ice machines on one bin 1 Arrange for proper electric water and drain j See instructions for the plumber and for the electrician 2 Single ice machine on bin Use legs packed with the bin After mounting the legs position the ice storage bin in the selected location Two ice machines on a bin require a stacking kit
17. arvest Ice Weight e13 5 14 5 lb Refrigerant Charge e Air Cooled 64 ounces of R 404A eWater Cooled 62 ounces of R 404A Typical Air Cooled Machine Amp Draw Single phase minutes into freeze 17 Harvest 13 Three phase e5 minutes into freeze 9 5 Harvest 8 5 High Pressure Cut Out e High pressure safety air cooled Manual reset cut out at 450 PSIG e High pressure safety water cooled Manual reset cut out at 400 PSIG Fan Pressure Switch e240 PSIG cut in 190 PSIG cut out Ice Level Control eMaximum Range 8 feet e Partial Fill Setting 21 22 from the base of the ice machine Timer revolution takes 10 minutes was 8 minutes prior to June 1996 Cube Size Control e Cut In adjustable between and 250F June 1996 SYSTEM SPECIFICATIONS 1402 CME1202 amp CME1402 The following numbers can be used as a guideline There will be some variation from unit to unit Column head numbers Ambient air in deg F Inlet water in deg F 70 50 90 70 100 90 Typical Cycle Time Air 13 14 minutes 16 18 minutes 19 20 minutes Typical Cycle Time Water 13 14 minutes 15 17 minutes 17 18 minutes Cycle Discharge Pressure Min Standard Harvest Time 3 16 minutes 3 l minutes 16 minutes Typical Freeze Cycle Suction 30 air 34 water 33 34 PSIG 35 36 PSIG Pressure End of Cycle Typical Air Cooled F
18. be size to the Cube Size Diagram To adjust cube size locate cube size control on the front of the control box Rotate the adjustment screw one eighth of a turn Clockwise for LARGER ice cubes COUNTER Clockwise for SMALLER ice cubes Observe size of the ice in the next ice cube harvest and repeat the adjustment until the correct ice cube size is achieved CME1202 amp CME1402 CUBE SIZE DIAGRAM JUST RIGHT When the cubes the correct size they will connected together vertically and drop off in strips The batch weight will be about 13 5 to 14 5 Ib Note If the cubes at the bottom rows of some evaporators are smaller than others the size difference does not affect capacity or performance However there should be some ice in all cells If not contact the Factory TOO SMALL 1995 11 1202 amp 1402 INITIAL START UP 13 Check harvest time There must be enough time in the harvest cycle to defrost all the cubes but not an excessive amount that will waste capacity The length of the harvest cycle is determined by the timer cam positions If needed adjust the harvest time so there are about 15 seconds of harvest time left after the last cube has fallen from the evaporators Because harvest time varies with the water and air temperatures at the ice machine colder air and water will result in faster ice making but require more time for harvest Do NOT
19. check machine High temperature cut out open Hot gas valve leaks thru replace P C Board Open Master switch open Replace board Test replace Timer contacts open Replace timer Makes thick ice freezes up Harvest cycle too short Adjust timer Waiter inlet valve restricted Clean or replace valve Low water pressure Hot gas valve defective Check water filter or supply Replace hot gas valve Water reg valve water cooled leaks through Replace water reg valve Low refrigerant charge Locate leak recover repair replace drier evacuate and weigh in nameplate charge Air intake temperature too high air cooled Reduce room temperature Sump covers out of position Cubes too small Re position sump covers Adjust cube size Cube size control stuck open Replace cube size control Huns makes no ice Pump problem or water leak in reservoir Check water system and pump Water inlet valve either lets in no water or leaks through Replace inlet water valve Low refrigerant charge Timer stuck Locate leak recover repair replace drier evacuate and weigh in nameplate charge Replace timer Relay does not energize unit stuck in harvest Replace relay Long freeze cycle Water inlet valve leaks through Dirty condenser Air intake temp too high Replace inlet water valve Clean condenser Reduce room temperature Water temperature
20. d to interconnect the ice level controls seal the freezing compartments and to retain the top edges of the bottom unit s front panels Follow the installation instructions of the stacking kit but in general Use heavy duty legs kit KLP6 When stacking two units remove the top panel and the evaporator cover from the lower icemaker The top removed from the lower ice maker will no longer have any function A stainless steel bracket from the kit must be attached to the top of the bottom machine before the units are stacked Place strips of gasket material from the stacking kit on the top edges of the bottom unit s freezing compartment Carefully lift the uncrated top unit onto the bottom one and align the two cabinets Use of a mechanical lift is recommended for this step At the back of the two ice makers bolt the upper ice maker cabinet to the lower ice maker cabinet using the mounting straps and bolts from the hardware package Add the relay box to interconnect the two ice machine s bin control circuits STAINLESS STEEL PANEL d RETAINING BRACKET EVAPORATOR COVER January 1995 Page 6 1202 amp 1402 FOR THE ELECTRICIAN SEE NAMEPLATE for current requirements to Electrical connections are made at the rear of determine wire size to be used for electrical the ice maker inside the junction box hookup The cuber requires a solid chassis to i All external wiring should conform t
21. detection equipment is required to locate small refrigerant 10 24 80 171 leaks Usually a leak detector capable of detecting a Halongenated 8 26 82 177 refrigerant or 134 will work Check with the leak detector 6 28 84 182 manufacturer if in doubt 4 29 86 188 Access Valves To use the access valves 7 Remove the cap from the stem use 3 16 allen wrench to check 2 35 92 206 that the valve is CLOSED The remove the core cap 4 37 94 212 e Close the valve and replace the caps when the job is finished 6 39 96 219 The valve must be closed and the caps must be on or the valve 8 41 98 225 Will leak 10 43 100 232 12 46 102 239 14 48 104 246 16 50 106 253 18 5 108 260 20 55 110 268 22 58 112 275 24 60 114 283 26 63 116 291 28 66 118 299 rae 30 69 120 307 32 72 122 316 34 75 124 324 36 78 126 333 38 81 128 342 Torque Stem to pr cadi Torque ee ws Core to 44 91 134 370 Torque Stem Cap to 7 12 ft Ib 46 95 136 379 8 12 ft Ib 48 99 138 389 50 102 140 399 52 106 142 409 Access Valves 54 110 144 420 Note There are no valve 56 114 146 430 cores in this valve 58 118 148 441 60 123 150 452 62 127 152 464 64 132 154 475 66 136 156 487 68 141 158 499 January 1995 Page 30 1202 amp 1402 LIQUID CHARGING Instructions for R 404A In preparation for charging the low side hose should have a sight glass and or a restrictor device such as a Charge Faster
22. e ice machine and ice storage bin with the sanitizing solution Immerse any small parts in the sanitizing solution and wash the parts flushing the solution thoroughly in over and through all parts and surfaces of the parts being cleaned 3 Allow to air dry January 1995 Page 19 1202 amp 1402 ADJUSTMENTS Adjustment Of The Cube Size Control CAUTION BEFORE adjusting the cube size control check other possible causes for cube size problems refer to Service Diagnosis section DO NOT perform adjustment when a new cube size control is installed until the control bulb has been properly installed in the tube well insulated and the ice maker has been through a complete freezing and harvest cycle Adjustment of the cube size control is available to change the cubes to the correct size see INITIAL START UP To produce LARGER sized ice cubes 1 Locate the cube size control on the front of the control box 2 Rotate the adjusting knob one eighth of a turn Clockwise 3 Observe size of ice cubes in next ice cube harvest and if needed repeat step 2 above until correct ice cube size is achieved To produce SMALLER sized ice cubes 1 Locate the cube size control on the front of the control box 2 Rotate the adjusting knob one eighth of a turn COUNTER Clockwise 3 Observe size of ice cubes in next ice cube harvest and if needed adjust again until correct ice cube size is achieved Adjustment of
23. ength of the harvest cycle can be changed by loosening the set screw on the cam and then rotating the shaft so that the opening between the cams change More of an opening between the cams more harvest time The harvest time may be reduced if not needed This will yield more ice per day ADJUSTING TIMER MICROSWITCH CLOSE UP VIEW OF TIMER SWITCH ACTUATOR January 1995 Page 21 1202 amp 1402 SYSTEM SPECIFICATIONS CME1202 The following numbers can be used as a guideline There will be some variation from unit to unit Column head numbers Ambient air in deg F Inlet water in deg F 70 50 90 70 100 90 Typical Cycle Time Air 14 15 minutes 18 19 minutes 19 20 minutes Typical Cycle Time Water 14 15 minutes 16 17 minutes 17 18 minutes Standard Harvest Time 16 minutes 3 16 minutes 16 minutes Typical Freeze Cycle Suction 31 air 35 water 35 36 PSIG 37 40 PSIG Pressure End of Cycle Typical Air Cooled Freeze 210 270 310 Cycle Discharge Pressure End of cycle Typical Harvest Cycle Suction 82 PSIG 87 89 PSIG 97 air 84 water Pressure Peak Water Cooled Discharge 245 PSIG 245 PSIG 245 PSIG Pressure Typical Air Cooled Harvest 110 PSIG 115 PSIG 115 PSIG Cycle Discharge Pressure Min high ambient long cycle time may result in lower than average batch weight See page 12 for harvest time optimization instructions Typical H
24. er a few batches of ice 9 When the sump has filled move the compressor ON OFF toggle switch to the ON position 10 On air cooled models the fan motors will begin to blow warm air out the back of the machine Water cooled models will begin to flow warm water out of the condenser drain Note To optimize the balance between ice production and water use the freeze cycle discharge pressure must be 245 P S I G Check the discharge pressure and adjust the water regulating valve to obtain 245 P S I G discharge 11 Check operation of the freezing cycle Ice will begin to form from the top of the evaporators to the bottom After the first cycle freezing time will range between 13 18 minutes on CME1202 and 11 15 minutes for the CME1402 January 1995 Page 10 FRONT VIEW OF TIMER ACTUATOR BUTTON MICROSWITCH HARVEST 7 PORTION 4 FREEZE 7 CONTROL BOX CUBE SIZE CONTROL ON OFF WASH SWITCH ICE LEVEL CONTROL INITIAL START UP 12 After an ice harvest check Cube Size There is just enough water available in the reservoir to make one full sized batch of cubes The water pump may pick up some air at the end of the freezing cycle so at the end of freeze some bubbles in the pump discharge hose is normal If the water pump stops pumping water before the end of freeze the cube size control may be set too cold or the water system may be leaking water Compare cu
25. front panel 3 Remove control box cover 4 Remove wires from circuit board connections 5 Unlock circuit board fasteners by twisting 1 2 turn 6 Pull circuit board of off fastener posts 7 Reverse to reassemble refer to wiring diagram as needed January 1995 Page 28 1202 amp CME1402 REFRIGERATION SERVICE General eScotsman recommends that any work on the refrigeration system only be done when it is certain that the system needs repair e Refrigerant should not be added except as a way to determine the proper operation of the product If the system was low on refrigerant there is a leak and it must be found and repaired e This system has a critical charge it must be recharged with the correct amount of refrigerant as listed on the nameplate of the ice machine or performance will suffer e Anytime the refrigeration system has been opened the dryer should be replaced an HFC dryer must be used eWhen brazing the tubing connections to the hot gas valve or thermostatic expansion valve the component must be protected by heat sink material and a dry nitrogen purge is also recommended Specifically Recover reclaim or recycle refrigerant The method chosen is up to the service company 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 the latest ARI spec 700 Rec
26. installed in it for metering liquid into the low side of the system 1 After a thorough evacuation to at least 200 microns shut off the manifold valves and switch off the vacuum pump 2 Place a drum of R 404A onto an electronic scale Manifold Valve Manifold Valve 3 Attach the charging hose to the drum 4 Open the valve on the drum and purge the charging hose Refrigerant Drum Valve 5 Zero out the scale Sight Glass Low Sid 6 Shut the low side access valve at the ice 22 machine 7 Open the discharge manifold valve full open 8 Watch the scale when the correct charge is shown shut the manifold valve Note If all of the charge will not go in the discharge side A Shut the discharge access valve at the ice machine B Switch the machine on 24 Open the low side access valve at the ice machine Hose Connection Schematic for Liquid Charging D Open the low side manifold valve and observe the sight glass to be certain that only gas is flowing into the system E When the proper charge is indicated on the scale shut off the manifold valve s 9 Shut off the valve on the refrigerant drum 10 Re open the manifold valves until all liquid has flowed out of the hoses 11 Shut the low side access valve on the ice machine 12 Remove hoses from ice machine and replace all caps January 1995 Page 31
27. irect flow to the evaporator plates to release ice cubes from the ice cube molds Fan Pressure Control SUMP STANDPIPE Air Cooled Models only In both freeze and harvest cycles the fan pressure control functions to maintain a minimum OPTIONAL discharge pressure by WATER FILTER u cycling the fan on and off m MD The approximate is HAND 2 27 240 PSIG and C O iS a 190 PSIG 5 20 CME1202 CME1402 COMPONENT LOCATION January 1995 Page 17 WATER SUMP DISTRIBUTORS DRAIN CAP 1202 amp 1402 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 CLEANING ICEMAKER 1 Remove screws and the front panel 2 Switch the compressor switch to OFF Switch the WASH OFF ICE switch to OFF AWARNING Electrical Shock Hazard Electrical shock can cause personal injury Cleaning procedures are done with the power ON 3 Remove the control box cover and rotate the shaft of the timer and switch assembly CLOCKWISE advancing to the freezing cycle Beginning of the higher part of the cam against the microswitch 4 Open the ice storage bin door and empty the bin of ice 5 Remove the hose clamp rubber cap and drain all the
28. l water problems A good filter combined with a polyphosphate feeder gives about the best overall performance Cold potable water must be supplied to the water CONNECTIONS All drains are gravity type and must have a minimum of 1 4 inch fall per foot on horizontal runs The drains to be installed to conform with the local plumbing code Install a vertical open vent on drain line high point to insure good draining The ideal drain receptacle is a trapped and vented floor drain Recommended bin drain is 94 rigid tubing and should be routed separately Insulation for high humidity areas is recommended Water Cooled models require another inlet connection and another drain for the condenser The drain must be separate from the bin drain Bin Drain The bin drains from the bottom and needs no vent unless there is a long horizontal run Terminate drains above the drain receptacle with the proper air gap per local code The ice machine sump drain fitting is 3 4 There must be a vent at this connection for proper sump drainage Recommended drain tube is 3 4 inlet fitting rigid tubing and should be routed separately Insulation for high humidity areas is recommended AIR COOLED WATER COOLED OPTIONAL CONNECTIONS CONNECTIONS FILTER 3 8 MALE SUMP DRAIN MUST CONDENSER CONDENSER FLARE BE VENTED INLET DRAIN Erden HAND SHUT A NV o6 Po AIR GAP AIR GAP BETWEEN BETWEEN DRAIN VENT DRAIN
29. laim programs are available thru most refrigerant wholesalers Use conservation minded service procedures e Refrain from checking refrigeration pressures without reason There are many ways to determine the proper operation of a Scotsman ice machine without using refrigerant gauges Visual inspection of the water system observation of the ice formation amp draw voltage and other techniques will lead to proper diagnosis Scotsman also recommends that at the time of initial start up gauges not be used e f gauges must be used do not always check the high side pressure If the condenser is clean and seems to be operating correctly it most likely is The low side pressure is much more important on an ice machine than is the high side e f gauges must be used use very short hoses Minimal refrigerant discharged into the hoses equals minimal refrigerant discharged into the air If the refrigeration system must be serviced the quality of service must insure that there will not be a repeat failure as repeat failures will cause refrigerant to be discharged into the air by the failure or when the failure is corrected e f there has been a compressor burn out check for acid in the oil If acid is indicated extra steps must be taken to clean up the system Never use refrigerant such as R 11 to clean up or flush out a refrigeration system When system clean up is required the use of suction line filter dryers and liquid line
30. lifted upward 3 Unsnap and disconnect water distributor tubes from the water manifold section To replace the water distributor tubes and manifold tubes reverse the removal procedure BE SURE the notches in the water manifold tubes properly 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 DISTRIBUTOR TUBE CME1202 amp CME1402 Cube Size Control To remove the cube size control AWARNING Electrical Shock Hazard Electrical shock can Cause personal injury Disconnect power before beginning to service components 1 Remove front panel 2 Remove cover from control box 3 Trace capillary tube from the cube size control to the refrigerant suction line 4 Remove the coiled capillary tube bulb from the tube well on the suction line 5 Remove electrical leads from the cube size control NOTCH IN CONTROL REMOVAL OF THE CUBE SIZE CONTROL CUBE SIZE CONTROL 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 January 1995 Page 27 1202 amp 1402 REMOVAL AN
31. m sceen 6 Reverse steps 1 4 to reassemble CME1202 amp CME1402 ICE STORAGE BIN The interior liner of the bin is in contact with a food product ice The storage bin must be cleaned regularly to maintain a sanitary environment Scotsman Ice Machine Cleaner contains acids These compounds may cause burns If swallowed DO NOT induce vomiting Give large amounts of water or milk Call Physician immediately In case of external contact flush with water KEEP OUT OF THE REACH OF CHILDREN Scale that may form on the plastic liner can be removed by scrubbing the surface with a mixture of Scotsman Ice Machine Cleaner and hot water Remove any scale prior to sanitizing AWARNING To Remove Scale 1 Mix a cleaning solution of 4 ounces of Scotsman Ice Machine Cleaner to 4 pints of hot 959F to 1109 E water 2 Using rubber gloves dip a nylon scouring pad into the cleaning solution and scrub the scale off of the liner 3 After all the scale has been removed rinse all of the surfaces inside the bin with potable water To sanitize the bin and ice machine interior Use an approved sanitizer and follow the directions and warnings of that sanitizer or use the following instructions for use of household bleach if it meets local codes 1 Mix a sanitizing solution of 1 ounce of household bleach to 2 gallons of water 2 Using clean rubber gloves and a clean cloth wipe all interior surfaces of th
32. n the name and telephone number of the authorized SCOTSMAN Service Agency serving him LEVEL ASSEMBLY FINAL INSTALLATION January 1995 Page 9 1202 amp 1402 INITIAL START UP 1 Remove the front panels by removing screws at the base and pulling out 2 Remove two screws and the control box cover 3 Check that the two switches on the control box the ICE OFF WASH rocker switch and the COMPRESSOR ON OFF toggle switch are in the OFF position 4 OPEN the water supply line shut off valve 5 Switch the electrical power to the machine ON 6 Inside the control box is the shaft of the timer and the switch assembly Rotate the shaft of the timer until the actuator arm on the microswitch drops off outer cam into cam slot See Front View of Timer 7 Move the ICE OFF WASH rocker switch to the ICE position 8 Check the water fill cycle For several minutes the inlet water valve will be open and water will flow into the reservoir Near end of the fill cycle water should be overflowing the reservoir and draining thru the reservoir drain If at the end of the fill cycle the reservoir is not full repeat step 6 Check that the sump covers are snapped in place Check that the water distributors are properly seated at the top of the evaporators and that water is flowing over all of the cube cells Note Some water may spray from the evaporators is normal when the machine is new The spray will stop aft
33. ntrol water before harvest Inlet water valve leaks thru Replace valve Hot gas valve leaks thru At the end of the freeze cycle there should be frost on the evaporator end of the hot gas tubes if not replace the hot gas valve Unit runs out of water Reservoir leaks Repair leak Inlet water valve restricted Clean or replace valve Short harvest cycle Adjust timer Water pressure too low Check supply Unit shuts off before bin is full Something blocking transducer Remove blockage Transducer is wet Remove transducer and shake screen dry Control set on partial Set control to full Unit does not shut off Ice level control failure Check circuit see next page Timer stuck does not turn Replace timer January 1995 Page 25 1202 amp CME1402 SERVICE DIAGNOSIS Ice Level Control Circuit CONDITION DETERMINE CAUSE PROBABLE CORRECTION Ice Machine does not run it has power to it the high pressure control is closed the on off switch is set to ON A Listen for a ticking sound from transducer B Remove front panel s twist transducer 1 4 turn and pull out DO NOT UNPLUG with power connected Examine the transducer the inside must be clean and dry If no noise go to C If there is a noise check for a light on the board models built after 4 93 If there is a light on check relay contacts N O and COM The contacts should be CLOSED If closed go to D If not
34. o the chassis earth ground wire See Wiring Diagram 9 national state and local electrical code Be certain the cuber is connected to its own requirements Usually an electrical permit and electrical circuit and individually fused Voltage services of a licensed electrician will be variation should not exceed ten percent of the required nameplate rating even under starting conditions Low voltages can cause erratic operation and may be responsible for serious damage to the ice GROUND SCREW maker FOLLOW ALL APPLICALBE CODES DETAIL OF JUNCTION BOX HAND DISCONNECT SWITCH JUNCTION BOX ELECTRICAL CONNECTIONS WATER COOLED ELECTRICAL CONNECTIONS AIR COOLED January 1995 Page 7 1202 amp 1402 FOR THE PLUMBER FOLLOW ALL LOCAL CODES The recommended water supply line is a 3 8 inch O D copper tubing with a minimum operating pressure of 20 PSIG and a maximum of 80 PSIG Connect to cold water supply line with standard plumbing fittings with shut off valve installed in an accessible place between the water supply and the cuber In some cases a plumber will be required Water Limitations An ice machine is a food manufacturing plant it takes in 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 It is generally better to filter the water although there is no one filter that will cure al
35. ote The ice making portion of the water system should be sanitized after cleaning by repeating steps 2 12 except substitute an approved sanitizing solution for the cleaning solution 13 Move the compressor ON OFF switch to the ON position to start the ice making process CAUTION DO NOT use ice produced from the cleaning solution Be sure none remains in the bin 14 Check the next ice cube harvest to be sure that the ice cubes are clear and the acid taste is gone 15 Add hot water to the bin to melt the ice 16 Replace all panels January 1995 Page 18 CLEANING AIR COOLED CONDENSER 1 Disconnect electrical power The fan blade can Cause personal injury Disconnect power before beginning to clean condenser AWARNING 2 Remove front panel 3 Clean or replace the air filter 4 Check to see that the inside of the condenser is clean light should be visible through the fins If not clean the internal parts by vacuum pressure washer and or coil cleaner CONDENSER AIR COOLED CONDENSER MUST BE CLEAN CLEANING Inlet Water Valve The inlet side of the water valve has a screen in it to protect the internal components from debris that may be carried to the valve by the water If the screen becomes clogged it must be cleaned off 1 Shut off the water supply 2 Unplug electrical connector from the valve 3 Dismount valve from cabinet 4 Remove inlet connection from valve 5 Brush debris fro
36. reeze 210 270 315 Cycle Discharge Pressure End of Cycle Typical Harvest Cycle Suction 77 85 PSIG 83 86 PSIG 98 air 85 water Pressure Peak Water Cooled Discharge 245 PSIG 245 PSIG 245 PSIG Pressure Typical Air Cooled Harvest 135 PSIG 140 PSIG 155 PSIG See page 12 for harvest time optimization instructions Typical Harvest Ice Weight e13 5 14 5 Ib Refrigerant Charge e Air Cooled 64 ounces of R 404A eWater Cooled 62 ounces of R 404A Typical Air Cooled Machine Amp Draw Single phase e5 minutes into freeze 17 Harvest 15 5 Three phase minutes into freeze 11 Harvest 9 High Pressure Cut Out e High pressure safety air cooled Manual reset cut out at 450 PSIG e High pressure safety water cooled Manual reset cut out at 400 PSIG Fan Pressure Switch e240 PSIG cut in 190 PSIG cut out Ice Level Control eMaximum Range 8 feet e Partial Fill Setting 21 22 from the base of the ice machine Timer revolution takes 10 minutes was 8 up to June 1996 Cube Size Control eCut In adjustable between 0 F and 25 F May 1995 1202 amp CME1402 SERVICE DIAGNOSIS Electrical and or Adjustments SYMPTOM POSSIBLE CAUSE PROBABLE FIX Nothing operates Bin level control holding machine off Bin is full use some ice Check ice level control circuit see page 26 No Power Reconnect power High pressure control open Heset
37. replace the board If light is off or prior model go to B If the inside of the transducer above screen was wet replace it Set bin level to FULL and aim at an object about 1 3 feet away Machine should restart if not go to D C Check power to bin level control board Should be 12 volts from transformer if not replace transformer If there is power 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 level board assembly defective Replace transducer Set bin level to FULL and aim at an object about 1 3 feet away Machine should restart If this does not repair unit replace the board Machine runs makes ice switches on and off but ice level cannot be controlled Ice level switch may be defective On boards with a light check by moving switch amp watching light Replace ice level switch AWARNING PARTIAL VIEW Electrical Shock Hazard Can OF CIRCUIT BOARD Cause Personal Injury 12 1912 01 ZF Disconnect Power Before Servicing Bin Thermostat Posts at Line Voltage o TIMER BIN THERMOSTAT
38. such as KSCMS48 Use heavy duty leg kit KLP6 when stacking onto the BH900 SHIPPING BRACKETS Note Allow enough space to the left and back to service the machine Do NOT push the bin into position instead lift it there Pushing a bin may damage the legs and leg mounts Level the bin in both the front to rear and side to side directions by adjusting the leg levelers Stacked units use non adjustable legs and must be leveled with shims Select a well ventilated location for air cooled models Note Air cooled models blow air from front to back 3 Inspect the bin top mounting gasket which should be flat with no wrinkles to provide a good water seal when the cuber is installed on top of the bin ICE MACHINE AND BIN ASSEMBLY Ice Maker Install the modular cuber on top of the bin using care to be sure a good seal is made between the two cabinets Use of a mechanical lift is recommended Align the holes in the bottom rear of the cabinet to mate with the two mounting holes on the top rear of the bin Use bolts and straps found on the back of the ice maker to secure the ice machine to the bin When alignment and leveling are completed tighten the bolts to secure the mounting straps Remove the front panels and remove the evaporator shipping brackets and hardware January 1995 Page 5 1202 amp 1402 FOR THE INSTALLER Location amp Assembly Stacking Instructions A stacking kit KSCMS48 is require
39. the machine There are two parts to the control the circuit board and the level control switch THE USER CAN SELECT THE AMOUNT OF ICE TO BE BIN ICE ICE OFF WASH SWITCH MAINTAINED IN THE BIN LEVEL SELECTOR SWITCH Ai vinis y BEP SEE LL fA bak 8 I de 7 lt PARTIAL LO 27252222 Te a 4 Se Ax ES Te ES SE January 1995 Page 16 COMPONENT DESCRIPTION Water Inlet Solenoid Valve The water inlet solenoid valve fills the sump assembly with water Extra water overflows out the overflow standpipe of the sump This action fills and rinses the sump during each harvest cycle The flow rate is 1 g p m Water Distribution System The water distribution system functions to evenly supply water to all cells of the evaporator plates The water pump pumps water from the sump up the vertical tygon tube to the tee From there water is channeled through the water manifold to the water distributors above 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 sump reservoir for recirculation Hot Gas Solenoid Valve The hot gas solenoid valve opens only during the harvest cycle to divert the hot discharge gas from the compressor by passing the condenser and capillary tube for d
40. ube 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 either ambient air or incoming water temperature will affect the efficiency of the refrigeration system and this will vary the length of time it takes the evaporator to reach the temperature at which the cube size control is preset to close See CUBE SIZE ADJUSTMENT BEFORE attempting to adjust the control Relay The multi function three pole double throw plug in relay is inserted into a receptacle on the printed circuit board in the control box The relay functions in part to by pass the bin control to prevent the ice maker from shutting OFF when the bin control opens during the freezing cycle The bypass action ensures full sized ice cubes with each harvest cycle CONTROL BOX ICE OFF WASH SWITCH BIN ICE LEVEL SELECTOR SWITCH TIMER AND MICROSWITCH CME1202 amp CME1402 Timer Timer amp Switch Assembly The timer cam is controlled by the cube size control The outer surface or large diameter lobe of the timer cam determines the timer cycle for finish freezing of the ice cubes while the inner surface or small diameter lobe determines the time cycle for the harvest cycle When the microswitch button is pushed in there is power connected to
41. water from the sump assembly into a container Replace the rubber cap and hose clamp 6 Mix 24 ounces of Scotsman Ice Machine Cleaner with 2 gallons of warm 95 F 1152 water Scotsman Ice Machine AWARNING Cleaner contains acids These compounds may cause burns If swallowed DO NOT induce vomiting Give large amounts of water or milk Call Physician immediately In case of external contact flush with water KEEP OUT OF THE REACH OF CHILDREN 7 Pour the cleaning solution into the reservoir until full 8 Move the WASH OFF ICE switch to the WASH position 9 Let the unit operate for 30 minutes During the wash cycle if the machine runs out of solution mix 2 more gallons of solution per step 6 refill the sump and continue the wash cycle for the remainder of the 30 minutes 10 Move the WASH OFF ICE switch to the OFF position 11 Remove the reservoir drain cap and drain the cleaning solution from the sump Replace the drain cap 12 Rotate the shaft of the timer and switch assembly CLOCKWISE to the harvest position low part of the cam against microswitch Move the WASH OFF ICE switch to the ICE position to start the Harvest cycle If after completing this procedure one or more evaporator plates does not have a full flow of water for each vertical column of cubes shut down the operation and remove and clean all water distributor manifolds Reinstall the water distributor manifolds N
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