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Service Manual 03/01/2001

1. N OO T oO ODN TSP860C Power High Voltage Board TEST COMPONENT VOLTAGE The power board has a series of LEDs lamps and POINT test points to assist in troubleshooting Supply Voltage When the LED or lamp is lit the component should Neutral Line be energized Local Solenoid 120 V LAMP COMPONENT COMPONENT Fan Control 120 V Refrigeration Heater control Heater Control 120 V Solenoid Remote Solenoid 120 V Not Used amp Controller Chassis amp Signal Ground L2 Evaporator L4 NOT USED Fan LED COMPONENT COMPONENT COMPONENT Jf LED Supply Voltage ENT 2 RemtAam C CORNER fo 1 9 E 58 0060 00 Form 24693 March 2001 Page 26 44 HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS CONTROLLER SERVICE PROCEDURES ML 124066 ML 124067 ML 124068 Controller Board The controller board has two LED s to assist in troubleshooting LED D2 POWER is lit indicates that power is supplied to the controller board LED D1 is flashing indicates that board and control board are communicating If not check all harness connections to communication cables going between 8 controller boards LED D13 is not used Jti 1000000
2. 4 REMOVAL AND REPLACEMENT OF PARTS 5 OV Ma IC TRUE T CT TTC TT T T T T T T T T GO DR aves aod avs des Gea aes 5 Controller Assembly UR Ao uu ou uu 6 Temperature Senso S Se ee ee Rhee Se eR eRe ee eee esas 7 AIP SENSO ik s dal dal tal ds da ds as o we we ee pis ee eae ee ee wee aa ea wa ae ae aa ab a 8 EXPANSION VAVO 8 Door Gasket svescsdceesedsesessesssileiededeiededjededjedesdededecessisdsiebsesb4ededaed4d44sms 9 msc se pos tn pes pst post pene te 9 B T ites me aa a te mame mame ne eal 9 BOOMER MERCA NETT ETT aug ere arg exes os Epes rane T 27 1 10 Food Temperature Probe Receptacle 10 Condensing Unit Components ae sess eesese cess ones oe SEIS OPES SESS Nd qd 11 CCOIBIBEGSSDI lee ha at ae aea saa ek ec aea a ha ne sp ie ie sep RU he a 11 Condenser Fan 11 Condenser Goll anat aw av aw aw ae ae es 11
3. E ees AIR TEMP lt j DEFROST Form 24693 March 2001 Page 30 of 44 BOARD 2 PRINTER S POWER SWITCH DOOR SWITCH COIL TEMP SENSOR SENSOR HEATERS THERMAL Te AE PNE ilc EXPANSION DUAL Z UN VALVE BULB PRESSURE zu me SWITCH HOT GAS RELAY y A CONDENSER Es un aM START COMPRESSOR FAN MOTOR CAPACITOR RUN CAPACITOR FRONT VIEW SIGHT GLASS FILTER DRIER SOLENOID BACK VIEW TSP1539 HQC45 HQCF45 HQC90 QUICK CHILLER ELECTRICAL OPERATION COMPONENT FUNCTION Compressor Condenser Fan Dual Pressure Control Start Capacitor Run Capacitor Thermal Overload Evaporator Fan Defrost Heater Air Temperature Sensor Coil Temperature Sensor Food Temperature Probe Front Door Switch Fan Door Switch Solenoid Valve Door Perimeter Heater Door Heater Thermostat Controller Power Supply Boards Board Main Contactor Main Switch Over Temp Thermostat manual reset Safety Thermostat manual reset Pumps refrigerant through refrigeration lines and components Draws air across condenser coil to aid in removing heat from the refrigerant and moves air across compressor to aid in cooling the compressor Low side monitors suction pressure at compressor Shuts compressor off when low
4. HH ree 12 FOP OIG E TTTTT 12 EVO rco M as a 12 FAN iom i 13 G3SCO 13 SERVICE PROCEDURES AND ADJUSTMENTS 14 Refrigeration Control Adjustments 14 TEV Superheat Adjustment 15 eere ineo dis US MN RO TI mala are a me eE EE ETE dna dor aes 15 circ REO T TT eee enw exe ene exes ace T T eke T T T T TITIO TT 16 Charging cs s e is is iu i ee te oe ae ee c n p n i n n a n n i i n i dm n n d 16 VS IG F amna ee eee Soe ee ee eee ee aes 17 Service Mode ML 124059 ML 124060 124063 17 Service Mode ML 124066 ML 124067 124068 19 Factory Settings Mode ML 124066 ML 124067 ML 124068 22 Software Version ML 124059 ML 124060 ML 124063 24 Software Version ML 124066 ML 124067 ML 124068 24 Controller Service Procedures ML 124059 ML 124060 124063 25 Controller Service Proc
5. 2 Remove the air temperature sensor from its location on the evaporator coil 3 Disconnect the lead wires 4 Reverse procedure to install Form 24693 March 2001 EXPANSION VALVE WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED WARNING THIS PROCEDURE REQUIRES THE USE OF REFRIGERANTS BE CERTAIN THE WORK AREA IS WELL VENTILATED SAFETY GOGGLES AND GLOVES SHALL BE WORN SINCE REFRIGERANTS MAY CAUSE BURNS TO THE SKIN 1 Pump down refrigeration system WARNING AFTER PUMP DOWN REFRIGERANT LINES WILL CONTAIN PRESSURE 2 Access the expansion valve through the front of the cabinet The expansion valve is located behind the evaporator fans 3 Detach expansion valve bulb from suction line 4 Remove expansion valve from the liquid line at inlet and outlet of valve 5 Install new expansion valve into inlet line and fasten bulb to suction line Initial setting 312 turns counterclockwise E LANSION VALVE EQUALIZER LINE NOTE Make sure expansion valve bulb is attached parallel to suction line and makes good contact 4 NEAR BOTTOM EVAPORATOR NOTE Expansion valve bulb must be lower than the diaphragm of the valve NOTE It is recommended that the filter drier be changed when this part is replaced Page 8 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER REMOVAL AND REPLACEMENT OF PARTS Recha
6. WARNING THIS PROCEDURE REQUIRES THE USE OF REFRIGERANTS BE CERTAIN THE WORK AREA IS WELL VENTILATED SAFETY GOGGLES AND GLOVES SHALL BE WORN SINCE REFRIGERANTS MAY CAUSE BURNS TO THE SKIN 1 Access the refrigeration system 2 Connect low blue side of gauge manifold to schrader valve on compressor access line and high red side of gauge manifold to schrader valve on filter drier line NOTE If there is no high side access install a permanent sweat on tap 3 Connect center line of gauge manifold to vacuum pump 4 Turn vacuum pump on and open both sides of gauge manifold Pull a vacuum to 200 microns Charge system and check for proper operation CHARGING SYSTEM WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED WARNING THIS PROCEDURE REQUIRES THE USE OF REFRIGERANTS BE CERTAIN THE WORK AREA IS WELL VENTILATED SAFETY GOGGLES AND GLOVES SHALL BE WORN SINCE REFRIGERANTS MAY CAUSE BURNS TO THE SKIN 1 Access the refrigeration system 2 Be sure refrigeration system is checked for leaks and properly evacuated before charging as outlined under LEAK CHECK and EVACUATING SYSTEM 3 Connect high side of gauge manifold to the liquid line make certain both valves on the gauge manifold are closed NOTE Put initial charge to system through the high side to prevent liquid refrigerant from reaching the
7. compressor 4 Connect refrigerant bottle to center connection of gauge manifold check the refrigerant bottle to confirm direction for liquid o Purge the hose from the refrigerant tank to the manifold gauge Page 16 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS 6 Open high side of gauge manifold and allow appropriate amount of refrigerant to flow into the refrigeration system A Shut off gauge and bottle valves when this has been accomplished 7 Disconnect the hose from the receiver valve 8 Reconnect power to the unit and check for proper operation and high pressure leaks NOTE Adjust charge as needed based on superheat and operating pressures Through low side of system 9 Disconnect power to the unit replace any panels and covers removed 10 Reconnect power to the unit SYSTEM CLEAN UP Introduction When a refrigeration system is accessed in service some degree of system clean up is required There are two levels of clean up Basic Conduct procedure as outlined under EVACUATING SYSTEM and incorporating a drier change this is recommended only when system exposure is limited Massive The use of Polyol Ester POE oil in systems using R 134a and R 404a as well as In many other applications require that every system failure be treated as a Massive clean up Massive Contamination If a compressor burn out or failure has occurred do not install a new
8. m o00000000L 1 8 5 O os 108110111000 OOOOL wld FACT TEST Q 1 e JUMPER Ep p TO RUN PIN Oro Page 27 of 44 BATTERY LED D 13 LED D1 E E E LG IS Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS I O Board The board has a series of LED s and test points to assist in troubleshooting When the LED is lit the component should be energized or input open COMPONENT COMPONENT Fm ae Defrost Heater 12VDC J17 J18 Triac Compressor 0 75 2VAC Solenoid voltage drop J15 J16 Triac Defrost Heater 0 75 2VAC voltage drop NOTE Voltage drop readings to be measured while specified component is energized 04 Compressor 011 Alarm solenoid J15 COMPRESSOR DEFROST SOLENIOD DooooooooO0k Q COMPRESSOR DEFROST SOLENOID HEATER 10 HIGH FAN E 09 h 1 LOW FAN D2 BACK DOOR D3 FAN DOOR FRONT DOOR Form 24693 March 2001 28 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER ELECTRICAL OPERATION ELECTRICAL OPERATION COMPONENT LOCATION Only for HQC45 ML 124059 HOCF45 ML 124060 HQC90 ML 124063 SWITCH SAFETY BULB SENSOR THERMAL OVERLOAD DUAL PR
9. temperature and the buzzer sounds for 2 minutes unless the MUTE key is pressed A Ifthe end of the automatic chill cycle is not acknowledge by pressing the yes key the unit will enter the hold mode B Ifthe end of the automatic chill cycle is acknowledge by pressing the yes key the unit will enter the idle mode Defrost Mode 1 The defrost mode can be entered manually from the idle mode or automatically from the hold mode 2 Defrost cycle is 20 minutes in length or until the coil temperature reaches 50 F A If the defrost mode was entered from the hold mode the unit will return to the hold mode NOTE When the unit returns to the hold mode the evaporator fans will not operate until the coil temperature is below 25 F B the defrost mode was entered from the idle mode the buzzer sounds for two minutes unless the yes key or the mute key is pressed Operational Mode Error Codes MESSAGE EXPLANATION Paper speed too slow Cooling too slow Air temperature can not be greater than 44 F 30 minutes into the hold cycle Page 33 of 44 SEQUENCE OF OPERATION ML 124066 ML 124067 ML 124068 NOTE HQC45 ML 124066 HQCF45 ML 124067 HQC90 ML 124068 schematics will be used to explain the electrical sequence of operation Refrigeration System 1 The controller must be in a chill or hold mode 2 controller monitors the air temperature and senses a need for cooling A The relay that contr
10. If a By Time mode selected the unit enters hold mode automatically after the time has expired 1 Unit is in IDLE mode 2 Hold mode is selected NOTE When the hold mode is selected two timers run One tracks the time in the hold mode and the other tracks the time since the last defrost hold mode defrosts at a programable interval A The refrigeration system will cycle on the air temperature of the cabinet 1 at the set point plus differential 2 when set point reached NOTE Set point and differential are selected in the factory set up menus NOTE If the cabinet door is opened during operation the evaporator fans and refrigeration system will shut down B The hold mode has an automatic defrost cycle after a programable interval of operation in the hold mode 1 When the defrost cycle is complete and the unit returns to the hold mode the evaporator fans will not operate until the coil temperature is below 25 F 3 Hold mode is terminated by pressing the exit key NOTE If the HOLD MODE is terminated by the operator with the defrost cycle in progress the defrost mode will continue until completion before going into IDLE MODE A Unit reverts back to step 2 By Time Chiller Freezer Mode 1 Unitis in IDLE mode 2 Chill type is selected and a cycle time is entered then start key pressed 3 The refrigeration system will cycle on the blasting air temperature set point
11. On at the set point plus differential B when set point reached 4 If soft chill has been selected the refrigeration system will cycle on the new blasting air temperature set point If chill was selected the set point remains the same until the end of the cycle NOTE If the cabinet door is opened during By Time chill operation the evaporator fans and refrigeration system will shut down Form 24693 March 2001 5 Chill mode is terminated when time expires A Buzzer sounds until muted 6 end of the chill cycle the unit will enter the hold mode A Ifthe end of the chill cycle is acknowledge by pressing the stop reset key the unit will enter the idle mode By Temp Chiller Freezer Mode 1 Unit is in IDLE mode 2 Chill type is selected and a target temperature is entered then start key pressed and probe selected refrigeration system will cycle on the blasting air temperature set point NOTE If the cabinet door is opened during By Temp chill operation the evaporator fans and refrigeration system will shut down 4 Chill mode is terminated when all the product probes reach the target chill temperature NOTE Once the temperature of the probe reaches the target temperature display will alternate with DONE and the buzzer will sound unless muted A Atthe end of the chill cycle the unit will enter the idle mode By Product Chiller Freezer Mode 1 Unit is in IDLE
12. air temperature Opens circuit to main contactor if cabinet temperature exceeds 155 F Page 31 of 44 Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER ELECTRICAL OPERATION SEQUENCE OF OPERATION ML 124059 ML 124060 ML 124063 NOTE HQC45 ML 124059 ML 124060 HQC90 ML 124063 schematics will be used to explain the electrical sequence of operation Refrigeration System 1 The controller must be in a chill or hold mode 2 controller monitors the air temperature and senses a need for cooling A The relay that controls the solenoid valve is energized 1 Solenoid valve is energized and refrigerant flows to the evaporator 3 low pressure switch closes with the rise in pressure A The compressor motor is energized and refrigerant is pumped through the system 4 The expansion valve monitors the evaporator superheat and meters the amount of refrigerant entering the evaporator 5 controller senses the air temperature requirements have been met De energizes the relay that controls the solenoid valve 1 Solenoid valve is de energized and closes Refrigerant flow to the evaporator stops 6 Compressor continues to run Low pressure control opens as pressure drops A Compressor motor de energized 7 Unit is cycled by controller Idle Mode 1 Conditions A Unit connected to correct voltage B Safety thermostat closed C Fan door switch closed D Front door switch clos
13. and Rear 1 Pull the cover toward you to pull the VELCRO apart at each corner of the cover VELCRO IN ALL CORNERS G I 1 IL o IESEEEECTCECOCECCUOSCECSCSS 227538 c ZEE CONDENSING UNIT COVER 744673 2 Reverse procedure to install Top and Rear Covers WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED 1 Remove the screws from the edges of the top cover and remove it from the machine 2 Remove the screws from the edges of the rear cover and remove it from the machine BACK TSP1249C 3 Reverse procedure to install Page 5of 44 Evaporator Cover WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED 1 Remove the tracks HQC90 or the shelves and back shelf clips from the cabinet 2 Remove the screws that secure the evaporator cover and remove it from the cabinet NOTE The evaporator fan panel can be opened REMOVE SCREWS AT CORNERS O O em O EVAPORATOR COVER TSP1394C 3 Reverse procedure to install Form 24693 March 2001 HQCA45 HQCF45 HQC90 Q
14. change to date or time and return to the last date of service menu Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS C NEXT With the last date of service menu displayed pressing the button beside NEXT the following service menu will be displayed SERVICE MENU DOOR gt REFR AIR DEF COIL gt PROBES ALARM FANS gt PRINTER DISPLAY gt NOTE From service menu the following Service modes can be selected SERVICE MENU Diagnostic test REFR AIR Refrigeration System and Air probe test PROBES ALARM View current probes reading and change status of ALARM output DISPLAY Illuminates entire display DOORS Displays status OPEN or CLOSED DEF COIL Defrost System and Coil probe test FANS Tests Fan outputs PRINTERS Sends test pattern to printer s D SERVICE MENU Diagnostic test DIAGNOSTIC RUN CYCLES MAXIMUM gt MINIMUM gt FAILURE CLEAR gt SINCE DEF CYCLES NOTE The selected item will have a flashing or gt beside it Form 24693 March 2001 1 Pressing the button beside DIAGNOSTIC returns to the service menu 2 Pressing the button beside RUN CYCLES displays in the lower left corner of the display the number of cycles ran since last cleared 3 Pressing the button beside SINCE DEF displays in the lower left corner of the display the number of cycles ran since last defrost 4 Press
15. compressor until the clean up procedure has been completed If a massive moisture contamination or POE oil breakdown has occurred remove the old compressor as outlined under CONDENSING UNIT COMPONENTS in REMOVAL AND REPLACEMENT OF PARTS drain the oil and hold for installation 1 Recover refrigerant based on current EPA guidelines 2 Remove filter drier and metering device NOTE In POE oil applications it should always be assumed that the metering device is restricted after a contamination These devices can not be flushed clean and reused 3 Flush high and low sides of refrigeration system with Nitrogen to displace any trapped oil and contaminates 4 Reassemble refrigeration system to include compressor 032 size liquid line drier and new metering device NOTE The use of low flow Nitrogen through the system while welding is mandatory to prevent oxidation carbon plating that will lead to further contamination Page 17 of 44 NOTE The use of a suction drier is recommended when moisture contamination is present The suction drier should be removed within 48 hours of installation to prevent further performance issues Also install a new liquid line drier for maximum system clean up 5 Replace new oil into the compressor 6 Purge system with Nitrogen for 5 minutes Pressure should be applied to the high side and allowed to vent through the port on top of the compressor 7 Evacuate system for 30 minute
16. current Air temperature inside the cavity is also displayed HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS 3 service menu can be reached by pressing the button beside BACK and all outputs will return to their off state 4 COMP USAGE Displays days amp hours since the last cleaning of condensor coil NOTE After cleaning the condensor coil press the button beside cleaned coil to reset the day amp hour both to read O 5 The previous menu can be reached by pressing the button beside BACK and all outputs will return to their off state PROBES ALARM View current probes reading and change status of ALARM output PRODUCT PROBE TEMPS 1 2 lt ALARM OFF BACK 14 F 73 3 13 F 1 This screen displays the value of each product probe If no value s shown find the source of the problem 2 The alarm output can also be changed from OFF to ON 3 Pressing BACK displays the service menu and the alarm output returns to the off state DISPLAY Illuminates entire display see below Pressing any key will return to the service menu This option can also be used as a test for the keypad since any key press will return to the previous menu NOTE the screen does not display as shown display board needs replaced If display does not return to the service menu then keypad needs replaced DOORS Displays status OPEN or CLOSED DOOR INPUTS OPEN CLO
17. is selected and a time is entered 3 For the first 2 3 of the chilling time the refrigeration system will cycle on the blasting air temperature set point A at the set point plus differential B Off when set point reached 4 Forthe last 1 3 of the cycle if surface protection has been selected the refrigeration system will cycle on the new blasting air temperature set point of 28 F If surface protection is not selected the set point remains the same until the end of the cycle NOTE If the cabinet door is opened during manual chill operation the evaporator fans and refrigeration system will shut down Page 32 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER ELECTRICAL OPERATION 5 Manual chill mode is terminated when time expires A Buzzer sounds for 2 minutes 6 If the end of the manual chill cycle is not acknowledge by pressing the yes key the unit will enter the hold mode A Ifthe end of the manual chill cycle is acknowledge by pressing the yes key the unit will enter the idle mode Automatic Chiller Freezer Mode 1 Unitis in IDLE mode 2 Automatic chill is selected NOTE If the cabinet door is opened during manual chill operation the evaporator fans and refrigeration system will shut down 3 Auto chill mode is terminated when all the product probes reach the target chill temperature NOTE An asterisk will be displayed next to the temperature of each probe as they reach the set
18. mode 2 Product type is selected 3 Chill type is selected and a target temperature is entered then start key pressed and probe selected 4 Therefrigeration system will cycle on the blasting air temperature set point NOTE If the cabinet door is opened during By Temp chill operation the evaporator fans and refrigeration system will shut down 5 Chill mode is terminated when all the product probes reach the target chill temperature NOTE Once the temperature of the probe reaches the target temperature display will alternate with DONE and the buzzer will sound unless muted A Atthe end of the chill cycle the unit will enter the idle mode Defrost Mode 1 The defrost mode can be entered manually from the idle mode or automatically from the hold mode 2 Defrost cycle length is by set minutes or until the coil temperature reaches set point NOTE Minutes and coil temperature are adjustable in the Factory Settings mode A the defrost mode was entered from the hold mode the unit will return to the hold mode Page 34 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER ELECTRICAL OPERATION SCHEMATICS Only for HQC45 ML 124059 HQC F 45 ML 124060 120 208 240 60 1 DERIVED FROM W46 58 LEGEND GRE It AL ALARM CONTACTS POWDR BM BREAKER MAIN SUPPLY L2 E Bi CONTROL BREAKER C COMPRESSOR CAP F4 EVAPORATOR FAN CAPACITOR CF CUNTACTUR FANS CH CONTACTOR HEATERS CM CONTA
19. 3 March 2001 Page 24 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS CONTROLLER SERVICE PROCEDURES ML 124059 ML 124060 ML 124063 Controller Board The controller board has a series of LEDs to assist in troubleshooting When the LED is lit the component should be energized N emote Alarm 5 efrost Heater 6 3 NOT USED 4 Refrigeration NOT USED Solenoid LED 6 blinks on and off at one second intervals when the controller board is energized The service switch is located near the center of the board The buzzer loudness pot is located near the center of the board below the buzzer 1 j 1 Y J BUZZER JLED6 PES aLEDS BUZZER LOUDNESS Lu mmm ADJUSTMENT Tk Lo T k 7 r TI Voltage check for 13 5 1 5 VDC to Controller Board if LED 6 is not flashing 1 Check between TP 8 amp 9 on high voltage board for 13 5 VDC 2 Check the cable connections between the high voltage board and the controller board A Pins 5 amp 6 are ground on J2 high voltage board and J6 controller board B Pins 3 amp 4 are 12VDC on J2 high voltage board and J6 controller board C Check these pins at cable connections P17 J10 P10 P9 J9 and P6 Page 25 of 44 Voltage check for 5VDC to Printer Board 1 Check for 5 VDC on pins J3 15
20. 4067 ML 124068 to ol ap ee Page 41 of 44 s Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER TROUBLESHOOTING SYMPTOM POSSIBLE CAUSES Main circuit breaker open Fuse open on control power supply ML 124066 ML 124067 ML 124068 Nothing runs blank controller Compressor will not run current draw and trips overload Defrost time too long Compressor short cycles Compressor run time lengthy Continuous unit operation Form 24693 March 2001 AA SSO O Pa ass Ps S mte O O k P Oa ra 10 Internal circuit breaker open Control power supply malfunction ML 124066 ML 124067 ML 124068 Internal temperature over 155 F over temp thermostat open Main on off switch off Low voltage Start component malfunction Compressor windings shorted Locked rotor Excessive head pressure CPR valve malfunction ML 124059 ML 124060 ML 124063 Coil temperature sensor failure Wired wrong Controller malfunction One defrost heater failure Improper air flow over evaporator coil Expansion valve malfunction Low ambient conditions Low pressure control inoperative Failed air sensor Controller malfunction board malfunction ML 124066 ML 124067 ML 124068 Power High voltage board ML 124059 ML 124060 ML 124063 Solenoid valve malfunction Partial loss of refrigera
21. 7 ML 124068 Turn power OFF to the unit Form 24693 March 2001 BACK SIDE OF CONTROL PANEL 1 FACT N FACTORY SETTINGS SWITCH K PRINTERS Sends test print out to printer s PRINTER TEST RECORD READY LABEL READY NOTE LABEL READY not displayed if label printer is not an option 1 Pressing the button beside RECORD sends a test print out to the paper printer The READY changes to RUNNING then to SUCCESS if the print finishes successfully Otherwise ERROR is displayed and find the source of the problem If the Label printer option is installed the LABEL test can be ran by pressing the button beside LABEL to send a test print out Pressing BACK displays the service menu WARNING THIS PROCEDURE REQUIRES THAT THE CONTROL BOX BE OPEN WHILE THE POWER IS SUPPLIED TO THE MACHINE EXERCISE EXTREME CAUTION AT ALL TIMES CAUTION Electro static discharge will damage the control board Use a anti static grounding kit when servicing the computer control box oooon pocco ooooon 200coooooon O ad g gt Wide Ww 2 Sake m wi Gc FACT TEST 22 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS Loosen the control panel screws and swing open control panel to gain access to factory settings mode Switch Locate the factory settings mode switch on the back of display board pr
22. CTOR MAIN CU CONDENSING UNIT F CONDENSOR FAN FANE EVAPDRATDR FAN MOTOR 1 FAND DH DOOR FRAME HEATER 50 DHMS FT DHT DOOR HEATER THERMOSTAT DSW DOOR SWITCH N C FLT FILTER FSW FAN DOOR SWITCH NC HC COIL DEFROST HEATER LEFT RIGHT MSW MAIN SWITCH PS HIGH LOW PRESSURE SWITCH is SOL SOLENOID VALVE REFRIGERATION PRINTER BOARD S STAT OVER TEMP THERMOSTAT dd ae n PRINTER BOARD V VARISTUR 0 85 1 86 LKEYPAD TERMINAL BLOCK XX Ca Tx 96 CONNECTOR HXX Dh d 638 uem quu Ji i HIGH VOLTAGE BOARD 2 CONTROLER BOARD COLUR CUDE V B BLACK 79BR 8088 BR BROWN 1 BLUE WA ARNING 5 6 R RED TB lad V WHITE NO WILD LEG ALLDWED Y YELLOW LI to Neutral needs to be 120 V 2 to Neutral needs to be 120 V ow BOR il 53 DISPLAY BOARD 120 208 240 60 1 3 elt 219 22 CaP Fl E eel 208 2288 2 CAP F2 4671 Form 24693 March 2001 Page 35 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER ELECTRICAL OPERATION Only for HQC90 ML 124063 120 208 230 60 1 S STAT XX HX wo LEGEND ALARM CONTACTS BREAKER CONDENSING UNIT 20 AMP BREAKER FANS 5 AMP BREAKER HEATERS 5 AMP CONTROL BREAKER 5 CONDENSATE EVAPORATING PAN CONTACTOR FANS CONTACTOR HEATERS CONTACTOR MAIN CONDENSING UNIT FAN MOTOR 1 IS TOP DOOR FRAME HEATER 50 DHMS F D DOGR HEATER THERMOSTAT DOOR SWI
23. DHT DOOR HEATER THERMOSTAT 4 DSW DOOR SWITCH FSW FAN DOOR SWITCH N C HC COIL DEFROST HEATER LEFT RIGHT LSW LIGHT SWITCH MSW MAIN SWITCH OT STAT OVER TEMP THERMOSTAT PL PILOT LIGHT PS HIGH LOW PRESSURE SWITCH PTR PRINTER PWS POWER SUPPLY SOL SOLENOID VALVE REFRIGERATION 635 i WIRE IDENTIFICATION SX NUMBER COLOR CODE JA A 4 64 COLOR CODE BLACK R BROWN BLUE RED WHITE YELLOW PRODUCT AIR COIL PROBES PROBES lt HaCSO 208 240V 60HZ 1PH DERIVED FROM DRAWING 788907506 TSP1549C Form 24693 March 2001 Page 39 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER ELECTRICAL OPERATION Only for HQC90 ML 124068 208 230 60 3 POWER SUPPLY LEGEND AL ALARM CONTACTS BM BREAKER MAIN BT BREAKER TRANSFORMER B5 CONTROL BREAKER OT STAT C COMPRESSOR EVAPORATOR FAN CAPACITOR cc CONTACTOR COMPRESSOR CH CONTACTOR HEATERS CM CONTACTOR MAIN CU CONDENSING UNIT F CONDENSOR FAN FANE EVAPORATOR FAN MOTOR 21 IS TOP FAN DH DOOR FRAME HEATER 50 OHWIS FT DHT DOOR HEATER THERMOSTAT DSW DOOR SWITCH N C FLT FILTER FSW FAN DOOR SWITCH N C COIL DEFROST HEATER LEFT RIGHT MSW MAIN SWITCH OT STAT OVER TEMP THERMOSTAT PS HIGH LOW PRESSURE SWITCH SOL SOLENOID VALVE REFRIGERATION TR TRANSFORMER V VARISTOR TERMINAL BLOCK RA X QOD CONNECTOR AV ELECTRONIC SWITCH TRIAC WIRE IDENTIFICATION ax NUMBER COLOR CODE COLO
24. ESSURE 1 Remove filter drier from liquid line AN FILTER DRIER 2 LII 7 4 2 Install a new filter drier 3 Evacuate system NOTE The use of reclaiming equipment is mandatory 4 Charge system and put unit into operation Form 24693 March 2001 EVAPORATOR COIL WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED WARNING THIS PROCEDURE REQUIRES THE USE OF REFRIGERANTS BE CERTAIN THE WORK AREA IS WELL VENTILATED SAFETY GOGGLES AND GLOVES SHALL BE WORN SINCE REFRIGERANTS MAY CAUSE BURNS TO THE SKIN 1 Remove the evaporator cover and top cover as outlined under COVERS AND PANELS 2 Pump down system WARNING AFTER PUMP DOWN REFRIGERANT LINES WILL CONTAIN PRESSURE 3 Remove the defrost heaters as outlined under DEFROST HEATERS 4 Disconnect the suction line at the soldered joint closest to the coil NOTE The use of reclaiming equipment is mandatory 5 Disconnect the liquid line at the expansion valve 6 Remove the screws from the coil mounting bracket Pull the coil out of the cabinet through the front Reverse procedure to install coil then proceed to next step NOTE It is recommended that the filter drier be changed when this part is replaced 9 Evacuate system 10 Charge system and put unit into ope
25. ESSURE SWITCH RELAY START cS AIR TEMP S ND REN SOLENOID VALVE gt i HIGH VOLTAGE BOX gh w POWER STRIP OVER TEMP THERMOSTAT EVAPORATOR FANS 3 TOP VIEW CONTROLLER POWER DOOR SWITCH HEATER FAN DOOR amp LL DOOR EVAPORATOR 4 lt 1L FAN MOTOR 3 P 1 COMPRESSOR gen ded FAN MOTOR RUN CAPACITOR FRONT VIEW SIGHT GLASS N FILTER DRIER D T BACK VIEW Page 29 of 44 SWITCH COIL TEMP SENSOR DEFROST HEATERS EXPANSION VALVE EXPANSION VALVE BULB HOT GAS CER CONDENSER amp CONDENSATE EVAPORATOR PAN TSP1396C Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER ELECTRICAL OPERATION Only for HQC45 ML 124066 HQCF45 ML 124067 HQC90 ML 124068 e BOA RD POWER STRIP OVER TEMP es THERMOSTAT EVAPORATOR FANS 3 TRANSFORMER e POWER SUPPLY TOP VIEW DOOR HEATER CONTROLLER EI FAN poor N SWITCH BULB EVAPORATOR T j THERMOSTAT Ld X d FAN MOTOR 9 y
26. GR SWITCH COIL DEFROST HEATER GH IS LEFT INTERNAL OVERLOAD FAN LIGHT SWITCH MAIN SWITCH PILOT LIGHT INCLUDED IN LSW 48 158 16 168 HR X 33 pr 13B SOLENDID VALVE REFRIGERATION L3b SAFETY THERMOSTAT lt I 498 3 VARISTOR Hy TERMINAL BLOCK XX aS eee el Hr Nc Sov 628 65 478 508 538 WIRE IDENTIFICATION 638 NUMBER COLOR CODE ea x bur m dg COLOR CODE BLACK BROWN DH CEP BLUE 120 208 230 60 3 RED DERIVED FROM W46 28 WHITE 5M OCF OCH YELLOW v gt 12 MANEBAT C 513 LSB KEYPAD S 625262 OF C3 1 H HHH T dH HEEE NTROLER 818 B gt H 30 828 1868 je 908 93V 31 BOARD 2549 Form 24693 March 2001 Page 37 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER ELECTRICAL OPERATION Only for HQC45 ML 124066 HQC F 45 ML 124067 208 240 60 1 POWER 42B 43R 258 288 SES 47 OF BOARD BOARD LOW FAN HIGH FAN 6B 298 QT STAT LEGEND perm 218 ANC 2 cAP F4 AL ALARM CONTACTS 31BR 31L BM BREAKER MAIN 1 10 BT BREAKER TRANSFORMER COMPRESSOR 23L fang 23B EVAPORATOR FAN CAPACITOR L8 FANS 10 HEATERS san CM CONTACTOR MAIN 33BR 33L CU CONDENSING UNIT 13 10 CONDEN
27. HOBART SERVICE MANUAL HQC45 amp 90 SERIES QUICK CHILLERS MODEL ML HQC45 ML 124059 HQC45 ML 124066 HQCF45 ML 124060 HQCF45 ML 124067 HQC90 ML 124063 HQC90 ML 124068 HQC45 MODEL SHOWN 5962 NOTICE This Manual is prepared for the use of trained Hobart Service Technicians and should not be used by those not properly qualified If you have attended a Hobart Service School for this product you may be qualified to perform all the procedures described in this manual This manual is not intended to be all encompassing If you have not attended a Hobart Service School for this product you should read in its entirety the repair procedure you wish to perform to determine if you have the necessary tools instruments and skills required to perform the procedure Procedures for which you do not have the necessary tools instruments and skills should be performed by a trained Hobart Service Technician Reproduction or other use of this Manual without the express written consent of Hobart Corporation is prohibited A product of HOBART CORPORATION TROY OH 45374 0001 Form 24693 March 2001 Supercedes F 24664 and F 24603 HQC45 HQCF45 HQC90 QUICK CHILLER TABLE OF CONTENTS Cl m r nw nnne 3 a i iin im im min im im nm i n n e n n t t n n e n n n n n e 3 sae eee ates 3 eu A 3 eee ee 3 were
28. ING DIFF Is the temperature difference for hold mode ANTI SHORT Is the minimum time between closing and opening the compressor solenoid DEFROST TIME Is the length of defrost time in minutes DEFROST TEMP Is the set point for the coil temperature DEFROST INTVL Is the time interval between automatic defrosts The security code is the last seven digits of the serial number reversed The left arrow selects which digit to adjust and the up arrow increments the value of the selected digit Press Enter to continue to secured options or Exit to exit the factory settings mode If the incorrect security code was entered the following screen will be displayed MACH MODEL Select the type of model either HQC or HQCF NOTE Do not select HQF FQC FQF or FQCF models MACHINE SIZE Select the machine size either 45 or 90 NOTE Do not select any other size than actual chiller size SOFT FREEZE Allows chiller to perform a soft freeze NOTE This should remain NO unless instructed otherwise Page 23 of 44 Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS 20 FREEZE MAX Is the maximum selectable value for freezing the HQCF FREEZE MAX 20 F model chiller SFT FRZ MIN 5 1 21 SOFT FRZ MIN Is the minimum selectable value for soft freeze DEFROST TYPE ELE 22 DEFROST TYPE Is selection for chiller to defrost by ELE defrost lt BACK NEXT gt heating elemen
29. J3 16 J3 17 2 Check for OV on pins J3 18 J3 19 J3 20 Voltage check for 5VDC to Display 1 Check for 5VDC between J1 1 and J1 2 on controller board 2 Check these pins at cable connections J1 and P1 Printer Board The printer board monitors the speed of the paper feeding through the printhead If the speed is not normal Printer Error is shown on the display A paper jam or a mechanical problem with the printer can be the cause To reset the printer you must remove the power from the unit for a minimum of five seconds If the power is removed from the unit for less than ten minutes it will return to the point in the cycle at which the interruption occurred PRINTER ON BACK SIDE OF BOARD PAPER ADVANCE SWITCH TSP852 1 Inspect the printer for a paper jam or roll feeding incorrectly 2 Remove the paper from the printer and reload the paper Reset the controller and try to print 4 the error occurs again and its not a paper problem replace the printer board Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS Keypad 1 Disconnect P2 from J2 on the controller board 2 Perform a continuity test between the pin numbers P2 for the appropriate key 3 Use the 200 scale on a digital meter When the key is pressed the reading should be between 15 and 40 ohms
30. PRESSURE CHART R 404A Temperature in Fahrenheit Pressure in Ib in 25 115 0 _ CHECKING FORLEAKS 2 Connect the low blue side of gauge manifold to schrader valve 3 Connect refrigerant bottle to center of gauge manifold and open valve on bottle to purge hose to manifold gauge WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING 4 Open valve on low side of gauge manifold and SERVICED charge system with a small amount of R 22 refrigerant 1 to 2 ounces WARNING THIS PROCEDURE REQUIRES THE USE OF REFRIGERANTS BE CERTAIN THE 5 Close bottle valve and gauge valve WORK AREA 15 WELL VENTILATED SAFETY 6 Disconnect refrigerant bottle and connect SINCE REFRIGERANTS MAY CAUSE BURNS TO THE SKIN 7 Set output valve on nitrogen bottle to equal the appropriate pressure for the design rated 1 Access the refrigeration system refrigerant at 100 F on the P T chart NOTE Recover remaining refrigerant based on NOTE See system data plate for design refrigerant current EPA guidelines Page 15 of 44 gt C Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS 8 Open nitrogen bottle valve and gauge manifold valve low side and allow pressure to equalize 9 Shut off both valves and disconnect the nitrogen bottle 10 Using a leak detector check for leaks
31. Q D 5 8 STANDOFF 2 REQ SIRE SPACER LOWER TEAR BAR 2 REQ D SPACER LOWER TEAR BAR xd LOWER PAPER GUIDE amp TEAR BAR SPRING ASSEMBLY NOTE LABEL PRINTER IS AN OPTION BRACKET PRINTER 2 REQUIRED PAPER PRINTER SIDE LABEL PRINTER SIDE WITH LOWER GUIDE AND WITH LOWER GUIDE AND TEAR BAR WITHOUT TEAR BAR TRIM CONTROL PANEL WELDMENT RETAINER MEMBRANE WELDMENT 6 32 NYLON INSERT HEX NUT 8 REQUIRED 8 32 NYLON INSERT HEX NUT 2 REQUIRED SWITCH MEMBRANE KEYPAY amp SPACER MEMBRANE LCD EMULATORS CONTROLLER BOARD 3 8 O D NYLON SPACER 4 EA Popper 996006005 7 8 STANDOFF 6 EA 2 52 NYLON HEX NUT 4 EA 318 32 NYLON INSERT HEX NUT 6 TSP1542 Page 7 44 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER REMOVAL AND REPLACEMENT OF PARTS TEMPERATURE SENSORS WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED Air Sensor 1 Remove the evaporator cover as outlined under COVERS AND PANELS Remove the air temperature sensor from its location in the return air duct Disconnect the lead wires SAFETY THERMOSTAT BULB AIR TEMP SENSOR 4 Reverse procedure to install Coil Sensor 1 Remove the evaporator cover as outlined under COVERS AND PANELS
32. R CODE BLACK R BROWN BLUE RED WHITE YELLOW lt HQC90 208 240VI60HZI3PH DERIVED FROM DRAWING 888907507 gt L1 885 gt L2 128 13R 298 288 Ro BOARD LOW FAN HIGH FAN CH 46 ZR QS 26B 298 p P 218 gu 24BR 2 CAP F4 ST RO opr 13 JBR 33L 638 AG LINE MONITOR HO BOARD GAW PRODUCT AIR COIL PROBES PROBES Page 40 of 44 Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER TROUBLESHOOTING Condensing Unit Single Phase for all HQC45 HQCF45 HQC90 Quick Chillers G L2 LOW SIDE HIGH SIDE PRESSURE PRESSURE SWITCH SWIICH COMPRESSOR THERMAL OVERLOAD CONDENSING UNIT SCHEMATIC TSP1395C TROUBLESHOOTING System Troubleshooting SYMPTOM POSSIBLE CAUSES Compressor will not run no current Cabinet temperature satisfied draw Compressor overload tripped Anti Short cycle time not satisfied Door open or faulty door switch with message on display Wired wrong or faulty connection Air sensor malfunction Start component malfunction Low pressure switch malfunction No refrigerant in system system leak Compressor motor windings open Compressor tripped on manual reset high pressure Failed liquid line solenoid valve Controller malfunction Power High voltage board ML 124059 ML 124060 ML 124063 board malfunction ML 124066 ML 12
33. RICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED Defrost Heater 1 Remove the evaporator cover as outlined under COVERS AND PANELS 2 Disconnect wire leads to defrost heater Unscrew floor bracket in front of the evaporator coil 4 Remove the copper wires holding defrost heater s in place REMOVE W WIRE TIES N t 42 emite 5 Remove the defrost heater from the coil being careful to prevent damage to coil fins 6 Reverse procedure to install Page 9 of 44 Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER REMOVAL AND REPLACEMENT OF PARTS Door Frame Heater 1 Open door past 90 2 Remove door frame heater covers from the door frame by gently prying out on the inside edge of the cover NOTE Do not bend the covers They will be difficult to install 3 4 Disconnect the supply lead wires from each end of the heater and the green ground lead wire from one end 5 Connect lead wires to replacement heater 6 Insert the heater into the door frame channel NOTE Do not kink heater wire at the corners of the frame 7 Install heater covers The horizontal one first A Hook the inside edge of the heater cover over the lip of the door frame NOTE Check position of heater cover in the top corners of the door f
34. SED NOTE Cycling the door open and closed shows the status of compartment door If not find the source of the problem 1 Pressing BACK displays the service menu l DEF COIL Defrost System and Coil probe test DEFROST TEST lt OFF COIL TEMP 76 1 The defrost heat can be turned OFF or ON by pressing the heater button OFF Defrost heater should not be energize ON Defrost heater should energize and coil temperature should slowly increase 2 The coil temperature is also displayed If not find the source of the problem 3 Pressing BACK displays the service menu and turns the heater off Page 21 of 44 lt P Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS J FANS Tests Fan outputs FAN MODE TEST lt FAN NONE FAN DOOR CLOSED Pressing the FANS button test the evaporator fans function The options for FANS are NONE SET1 SET2 and BOTH evaporator fans de energized SET1 This is the low air flow mode for the soft chill mode Only one evaporator fan energized If not find the source of the problem SET2 Two evaporator fans energized If not find the source of the problem BOTH All evaporator fans energized If not find the source of the problem Pressing BACK displays the service menu and turns the fan s off FACTORY SETTINGS MODE ML 124066 ML 12406
35. SOR FAN FANS EVAPORATOR FAN MOTOR 1 IS TOP FAN DH DOOR FRAME HEATER 50 OHMS FT DHT DOOR HEATER THERMOSTAT 4 DSW DOOR SWITCH N C FSW FAN DOOR SWITCH N C HC COIL DEFROST HEATER LEFT4RIGHT MSW MAIN SWITCH OT STAT OVER TEMP THERMOSTAT PS HIGH LOW PRESSURE SWITCH PTR PRINTER PWS POWER SUPPLY SOL SOLENOID VALVE REFRIGERATION WIRE IDENTIFICATION HX L R W Y COLOR CODE TRANSFORMER VARISTOR TERMINAL BLOCK CONNECTOR ELECTRONIC SWITCH TRIAC NUMBER COLOR CODE BLACK BROWN BLUE gt 43 PRODUCT AIR COIL n Y PROBES PROBES WHITE YELLOW 45 208 240V 60HZ 1PH DERIVED FROM DRAWING 88907505 TSP1548C Page 38 of 44 Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER ELECTRICAL OPERATION Only for HQC90 ML 124068 208 230 60 1 TR TRANSFORMER VARISTOR May TERMINAL BLOCK XX amp CONNECTOR AV ELECTRONIC SWITCH TRIAC POWER A 25B 28B BOARD 0 BOARD LOW FAN HIGH m LEGEND 41B 42B 268 295 OT STAT MSW Q Ed 21 Fan 215 hg 22 Fan 228 10 AMARE 24BR 2 CAP F1 225R 2 BHF BREAKER HEATERS FANS sth ag 32L ng BT BREAKER TRANSFORMER C COMPRESSOR T CAP F EVAPORATOR FAN CAPACITOR a 2S E 19 CH CONTACTOR HEATERS 2 CM CONTACTOR MAIN 23BR 2 CU CONDENSING UNIT 13 1 CONDENSOR FANS EVAPORATOR FAN MOTOR 1 IS TOP FAN DH DOOR FRAME HEATER 50 OHMS ET
36. TCH NC FILTER FAN DOOR SWITCH COIL DEFROST HEATER 1 IS LEFT INTERNAL OVERLOAD FAND LIGHT SWITCH MAIN SWITCH PILOT LIGHT CINCLUDED IN LSW SOLENOID VALVE REFRIGERATION SAFETY THERMOSTAT VARISTOR TERMINAL BLOCK XX WIRE IDENTIFICATION NUMBER COLOR CODE COLOR CODE WARNING BLACK NO WILD LEG ALLOWED BROWN LL to Neutral needs to be 120 V BLUE L to Neutral needs to be 100 V RED WHITE YELLOV 120 220 60 1 DERIVED FROM W46 30 2547 138 146 2881298 7B 138 CH He ur PRINTER BOARD KEYPAD 46B 498 n jM ma CO O CO 47B 508 ARAA T TH ENS DHT 76 7988 18088 e S 6 tat 778 2 2 83V 89R 3i 33 4BV SIW OCF T DISPLAY BOARD N PAN N Page 36 of 44 Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER ELECTRICAL OPERATION Only for HQC90 ML 124063 120 208 230 60 3 AL BC BF BH CF CH CM CU DHT DSW FLT FSW H LSW MSW PL S L S STAT XX 8X lt 22 r LEGEND ALARM CONTACTS BREAKER CONDENSING UNIT 12 BREAKER FANS 4 AMP BREAKER HEATERS 5 AMP CONTROL BREAKER 5 AMP CONDENSATE EVAPORATING PAN CONTACTOR FANS CONTACTOR HEATERS CONTACTOR MAIN CONDENSING UNIT FAN MOTOR IS TOP FAND DOOR FRAME HEATER 50 DOOR HEATER THERMOSTAT DOOR SWITCH N C FILTER FAN DO
37. UICK CHILLER REMOVAL AND REPLACEMENT OF PARTS CONTROLLER ASSEMBLY WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED CAUTION Electro static discharge will damage the control board Use a anti static grounding kit when servicing the computer control box Procedure 1 Remove the top cover as outlined under COVERS AND PANELS 2 Disconnect the plugs from the control box or control panel 3 Remove the connectors from the control box or controller if necessary Removable Components Only for ML 124059 ML 124060 ML 124063 DISPLAY 900968 98068 0008 omae KEYPAD PRINTER 4 Open the door to the control box or control panel and remove the screws that secure computer control box or controller to front of cabinet 5 Remove the control box or controller from the cabinet 6 Reverse the procedure to install u tn a a k 5 AO O 9 9 GGG gt Form 24693 March 2001 Page 6 44 ss HQC45 HQCF45 HQC90 QUICK CHILLER REMOVAL AND REPLACEMENT OF PARTS Removable Components Only for HQC45 ML 124066 HQCF45 ML 124067 HQC90 ML 124068 RETAINER PAPER ROLL LH RETAINER PAPER ROLL RH 2 REQUIRED 2 REQUIRED PANEL DUAL PRINTER ASSY 1 1 4 STANDOFF 8 REQ GUIDE PAPER FEED UPPER 2 RE
38. at all tubing connections A If any leaks are detected repair leak and recheck for leaks B If no leaks are discovered evacuate system as outlined under EVACUATING SYSTEM NOTE Install a permanent high side access port for future system diagnostics 11 Charge system as outlined under CHARGING SYSTEM EVACUATING SYSTEM Introduction Refrigeration reclaiming equipment is required Our goal in system evacuation is to remove all the non condensing contaminates as possible No evacuation method will remove 100 of the moisture and air from within the refrigeration circuit Because of this guidelines and methods must be developed and adhered to ensuring only harmless amounts of contaminants remain in the system Guidelines Use only a two stage vacuum pump 2 CFM or greater and electronic micron gauge Set output valve on nitrogen bottle to equal the appropriate pressure for the design rated refrigerant at 100 on the P T chart Evacuate from high and low sides of system No chemical additive or alcohols are to be used to dry up a system e Blow down of system with DRY NITROGEN prior to evacuation is acceptable and many times desirable See SYSTEM CLEAN UP Evacuate to 200 microns of mercury Procedure WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED Form 24693 March 2001
39. ed 2 Main switch closed A Main contactor energized contacts close 1 Door heater energized 2 Controller energized 3 Power to condensing unit controls 3 Controller goes through power up self diagnostics and displays main menu Form 24693 March 2001 Hold Mode 1 Unitis in IDLE mode 2 Hold mode is selected NOTE When the hold mode is selected two timers run One tracks the time in the hold mode and the other tracks the time since the last defrost hold mode has a defrost every six hours A refrigeration system will cycle on the air temperature of the cabinet 1 at the set point plus differential 2 when set point reached NOTE Set point and differential are selected in the set up menus NOTE If the cabinet door is opened during operation the evaporator fans and refrigeration system will shut down B The hold mode has an automatic defrost cycle after every six hours of operation in the hold mode 1 When the defrost cycle is complete and the unit returns to the hold mode the evaporator fans will not operate until the coil temperature is below 25 3 Hold mode is terminated by pressing the stop key NOTE If the HOLD MODE is terminated by the operator with the defrost cycle in progress the defrost mode will continue until completion before going into IDLE MODE A Unit reverts back to step 2 Manual Chiller Freezer Mode 1 Unit is in IDLE mode 2 Manual chill
40. edures ML 124066 ML 124067 ML 124068 27 ELECTRICAL OPERATION 41 29 Gomponesnr LOCAUON 3 2 2 2 2 8 5 RERBA IRE E er Stara aita 29 Component FUNGHOMN varus eae dada 31 Sequence of Operation ML 124059 ML 124060 124063 32 Sequence of Operation ML 124066 ML 124067 124068 33 renidet C 35 41 System Troubleshooting 41 FTOGUCE HODDIOSPOOLHLIO 44 CONDENSED SPARE PARTS LIST e e e eR eR o eR o cR eds Saw eee 44 Hobart Corporation 2001 Form 24693 March 2001 Page 2 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER GENERAL GENERAL INTRODUCTION Chillers are food processing refrigerators designed for rapidly chilling product from 150 F to approximately 37 F in approximately 90 minutes for reheating at a later time Quick Freezers are designed for rapidly freezing product as well as rapidly chilling product These units aid in preserving food quality texture and nutritional value All of the information illustrations and specifications contained in this manual are based on the latest product information available at the time of printing OPERATION Ref
41. er to the Instruction manual for specific operating instructions CLEANING Detailed cleaning instructions are included with each unit however special care must be given to the condenser coil The condenser coil must be cleaned weekly This surface must be kept free of dirt and grease for proper system operation This can be done with a vacuum cleaner using a brush attachment or a stiff brush or whisk broom Care must be taken not to damage the condenser coil fins Page 3 of 44 TOOLS Standard Standard set of hand tools Temperature tester or thermometer VOM with AC current tester Electrically conductive field service grounding kit p n TL84919 Special Refrigeration Reclaiming Equipment Acetylene torch Nitrogen bottle with gauges Refrigeration gauge manifold Dial a charge Valve core removal tool Vacuum pump Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER GENERAL SPECIFICATIONS DATA BTU HR 9900 25 F Evaporator 8050 0 F Evaporator 14700 25 F Temp Temp Evaporator Temp Refrigerant Type R 404A R 404A R 404A RLA Cond Unit Amp Draw RLA 1 phase 8 1A 1 phase 9 0A 1 phase 12A 3 phase 8 6A DIMENSIONS inches HQCF45 s 7 Height to bottom of cavity Form 24693 March 2001 4 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER REMOVAL AND REPLACEMENT OF PARTS REMOVAL AND REPLACEMENT OF PARTS COVERS AND PANELS Condensing Unit Covers Front
42. ess and hold switch while turning power ON to chiller The following factory settings menu will be displayed FACTORY SETTINGS VERSION S N RESET NEXT gt BACK DOOR NO LABEL PRINTER NO FANINHLD CYCLE 1 lt BACK NEXT gt BLASTING DIFF 4 F 1 HOLDING DIFF 4 F 1 ANTI SHORT 3 1 lt BACK NEXT gt DEFROST TIME 20 DEFR TEMP 50 F DEFR INTVL 6 HR BACK NEXT ENTER SECURITY CODE FOR NEXT SETTINGS 0000000 1 lt ENTER INCORRECT CODE PLEASE CALL HOBART FOR ASSISTANCE NEXT gt MACH MODEL HQC MACHINE SIZE 45 SOFT FREEZE BACK NEXT Enter the units serial number by selecting the left arrow next to S N changes which digit to edit in serial number and the up arrow increments the value of the selected digit HESET Resets all the parameters to the factory preset values and erases all recorded cycles in memory NEXT Continues to the next factory setting menu BACK DOOR Is not an option select no LABEL PRINTER Options are OFF No label printer ON Individual labels Continuous labels FANS IN HLD CYCLE Fans are defaulted to cycle ON and OFF Select CONT for continuous fan operation during hold mode BLASTING DIFF Blasting differential is the temperature difference between the set point temperature and the actual temperature for opening the compressor solenoid when in chill or freeze mode HOLD
43. for open or closed position Evaporator fans stop when door is open Monitors evaporator fan compartment door for open or closed position Evaporator fans will not start if the switch is open Refrigerant system operation stops after 30 seconds switch has been open Normally closed When energized allows refrigerant to flow from receiver to evaporator coil Prevents condensate from forming on door frame Monitors door frame temperature Opens circuit to door frame heater if the door frame temperature exceeds the set point Performs the following functions A Displays all data for the current mode of operation B Cycles refrigeration system to maintain cabinet temperature C Monitors power failures D Monitors door position Controls power to board and Performs the following functions Cycles defrost heaters during defrost cycle Cycles compressor solenoid to maintain cabinet temperature Monitors AC monitor to determine loss of power Closes alarm contact to signal external alarm device after a malfunction detected Monitors door switch position Monitors fan door switch Controls power to unit electrical circuits once main switch is closed Controls power to main contactor when safety thermostat is closed Removes power from all components including the controller DOWD Monitors cabinet air temperature Opens circuit to main contactor if cabinet temperature exceeds 155 F Monitors cabinet
44. gital values for probes AIR temp PROBE 1 PROBE 2 PROBE 3 PROBE 4 COIL temp Current Probe ots _ Heumiofntdowsw amp h Maintenance Menu OUTPUTS Displa Displa Press __ Explanation yes Defrost heaters no Maintenance Menu Display Display Press Top Line Bottom Line Explanation HRMNSCIO AM T PM Use number keys to change date mo day yr Enter new date current date setting in memory m NO Maintenance Menu LLL LLL PRINTER Press 4 Display will flash SENDING TEST PATTERN TO PRINTER and return to the maintenance menu If there is an error in the print operation a message will be displayed If the error occurs during the test print sequence that error will only be displayed if print is selected again Form 24693 March 2001 Page 18 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS SERVICE MODE ML 124066 ML 124067 ML 124068 The Service Mode allows service personal to exercise the loads and monitor the input of the Control independently to determine if the Control the electro mechanical components and the refrigeration system are operating properly WARNING THIS PROCEDURE REQUIRES THAT THE CONTROL BOX BE OPEN WHILE THE POWER IS SUPPLIED TO THE MACHINE EXERCISE EXTREME CAUTION AT ALL TIMES CAUTION Electro static discharge will damage the control board U
45. ing the button beside MAXIMUM displays in the lower left corner of the display the maximum air temperature in cabinet Page 20 of 44 5 Pressing the button beside MINIMUM displays in the lower left corner of the display the minimum air temperature in cabinet 6 Pressing the button beside FAILURE displays in the lower left corner of the display the failure since last service cleared If there is more than one failure pressing the lower left button will cycle through all failures Below is a complete list of all possible failures DEFR Defrost heater malfunction SYSTEM FAIL Chiller not cooling properly OVER TEMP Internal air temperature exceeds 150 F CONTROL Control board malfunction INTERRUPTED A chilling cycle has been interrupted either by loss of main power or inadvertently switching power switch OFF PROBE One of the probes have malfunctioned Air Coil or Product PRINTER Printer not responding or out of paper label 7 Pressing the button beside CLEAR clears the current item E REFR AIR Refrigeration System and Air probe test REFRIGERATION TEST REFR OFF AIR TEMP 14 F lt COMP USAGE BACK gt 1 Pressing the button beside REFR can test the compressor function The options for the REFR are OFF ON or ON amp FANS OFF Refrigeration not operational ON Refrigeration operational ON amp FANS Refrigeration and evaporator fans operational 2 The
46. nt High ambient conditions Improper air flow over condenser coil Excessive product load Excessive door openings Door gasket needs replaced Air sensor malfunction Contaminates in refrigeration system Compressor valve leakage Expansion valve malfunction Controller malfunction board malfunction ML 124066 ML 124067 ML 124068 Power High voltage board ML 124059 ML 124060 ML 124063 CPR valve malfunction ML 124059 ML 124060 ML 124063 Loss of refrigerant Excessive door openings Sensor malfunction Low pressure control malfunction Expansion valve malfunction Broken compressor valves Controller malfunction board malfunction ML 124066 ML 124067 ML 124068 Power High voltage board ML 124059 ML 124060 ML 124063 CPR valve malfunction ML 124059 ML 124060 ML 124063 Page 42 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER TROUBLESHOOTING SYMPTOM POSSIBLE CAUSES Low suction pressure Solenoid valve restricted Restriction in drier Loss of refrigerant Poor air flow Expansion valve blocked CPR valve malfunction ML 124059 ML 124060 ML 124063 Improper air flow across condenser Extreme ambient conditions Overcharge of refrigerant Air in system Defrost heater malfunction Wired wrong or faulty connection Relay contacts open Coil temperature sensor failure Controller malfunction board malfunction ML 124066 ML 124067 ML 124068 P
47. ols the solenoid valve is energized 1 Solenoid valve is energized and refrigerant flows to the evaporator 3 low pressure switch closes with the rise in pressure A compressor motor is energized and refrigerant is pumped through the system 4 The expansion valve monitors the evaporator superheat and meters the amount of refrigerant entering the evaporator 5 controller senses the air temperature requirements have been met A De energizes the relay that controls the solenoid valve 1 Solenoid valve is de energized and closes Refrigerant flow to the evaporator stops 6 Compressor continues to run Low pressure control opens as pressure drops A Compressor motor de energized 7 Unit is cycled by controller Idle Mode 1 Conditions A Unit connected to correct voltage B Safety thermostat closed C Fan door switch closed D Front door switch closed 2 Main switch closed A Main contactor energized contacts close 1 Door heater energized 2 Controller energized 3 Power to condensing unit controls 3 Controller goes through power up self diagnostics and displays main menu Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER ELECTRICAL OPERATION Hold Mode Product can be held at chilled temperature by selecting hold mode from main menu Unit will also go into hold mode automatically when all active probes have reached the target temperature when in By Temp mode
48. onnect lead wires and conduit at the compressor junction box 4 Disconnect suction and discharge lines from the compressor A lt 4 Z 5 SU tsj TA 1 Remove the compressor Install new compressor and connect wire leads and conduit at compressor junction box 7 nstall a new filter drier 8 Evacuate system 9 Charge system and put unit into operation Condenser Fan Assembly 1 Remove the fan guard from the top of the condenser assembly 2 Remove the screws from the mounting clamps on the front and rear of the motor Page 11 of 44 Remove the motor and fan assembly from the mounting bracket 4 replace the fan blade only follow steps 4A amp 4B To replace the motor perform step 4A and proceed to step 5 A Loosen the set screw that secures the fan blade to the motor shaft and remove the fan blade from the motor B Install the new fan blade with the set screws between the motor and the blades and reverse the procedure to install 5 Disconnect the lead wires from the motor 6 Reverse the procedure to install Condenser Coil WARNING THIS PROCEDURE REQUIRES THE USE OF REFRIGERANTS BE CERTAIN THE WORK AREA IS WELL VENTILATED SAFETY GOGGLES AND GLOVES SHALL BE WORN SINCE REFRIGERANTS MAY CAUSE BURNS TO THE SKIN 1 Evacuate refrigeration NOTE The use of reclaiming equipment is mandatory 2 Remove fan guard and fan shro
49. ower High voltage board ML 124059 ML 124060 ML 124063 Paper not feeding correctly Printer harness Printer mechanism printer board error Printer power supply board Main power supply Display harness Display board malfunction Power supply to controller Controller LED 6 ML 124059 ML 124060 ML 124063 Controller LED D1 D2 ML 124066 ML 124067 ML 124068 Controller P1 plug ML 124059 ML 124060 ML 124063 Probe open Wire connections Controller malfunction Out of range actual temperature range 40 F To 200 F Controller malfunction Printer malfunction Printer power supply board malfunction Printer output is not recognizable 1 Controller malfunction Printer does not print operator mode 1 Printer out of paper message on display 2 Printer malfunction 3 Printer power supply board malfunction 4 1 High head pressure Will not defrost Oe cmo eS ee a c Tc Printer Error on display Display blank ERR SHORT or OPEN on display where temperature is normally displayed Printer does not print test eI dc IE Controller malfunction No response from keypad Controller LED 6 ML 124059 ML 124060 ML 124063 2 Check keypads Page 43 of 44 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER CONDENSED SPARE PARTS LIST Product Troubleshooting SYMPTOM POSSIBLE CAUSES Product no
50. pressure setting is reached cut out Allows compressor to run when pressure rises to cut in setting High side monitors discharge pressure at compressor Shuts compressor off when high pressure setting is reached cut out Allows compressor to run when pressure returns to cut in setting The differential is the difference in pressure between opened and closed states of the pressure switch Wired in series with the start windings to help start compressor motor Continually in circuit to help compressor motor during operation Removes power from compressor if the internal temperature of the compressor becomes too high auto reset Senses current of run winding of compressor motor Normally open contacts close when the run winding draws a high amperage at start and brings the start capacitor and start windings into the circuit As the motor reaches operating speed less amperage through run winding the normally open contacts open and removes the start capacitor and start windings from the circuit Draws air from the cabinet and moves the air through the evaporator coil Air should blow air toward the door Defrosts evaporator coil and prevents water droplets from evaporator coil from freezing before they can drain to the condensate pan Operates only during defrost cycle Monitors air temperature inside cabinet Monitors the suction line temperature at evaporator during defrost cycle Monitors temperature of food product Monitors door
51. rame B Use your fingers to push the outside edge over the outside lip of the heater channel in the door frame C Repeat for each side 8 Check for proper operation of the door and door frame heater Form 24693 March 2001 FOOD TEMPERATURE PROBE RECEPTACLE WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED 1 Turn chiller OFF or select Stand by Mode were applicable 2 Remove the probe receptacle cover NOTE When installing the cover insure grommets are properly in place between probe receptacle housing and cover PROBE LEAD WIRES 3 E 4 GROMMENT PROPERLY INSTALLED J E 3 TAI 1 N 3 Unplug the probe 4 Reverse the procedure to install Page 10 of 44 HQCA45 HQCF45 HQC90 QUICK CHILLER REMOVAL AND REPLACEMENT OF PARTS CONDENSING UNIT COMPONENTS WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED Compressor WARNING THIS PROCEDURE REQUIRES THE USE OF REFRIGERANTS BE CERTAIN THE WORK AREA IS WELL VENTILATED SAFETY GOGGLES AND GLOVES SHALL BE WORN SINCE REFRIGERANTS MAY CAUSE BURNS TO THE SKIN 1 Remove the condensing unit covers as outlined under COVERS AND PANELS 2 Evacuate refrigeration system NOTE The use of reclaiming equipment is mandatory 3 Disc
52. ration Page 12 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER REMOVAL AND REPLACEMENT OF PARTS EVAPORATOR FAN 5 Remove the bolts that secure the evaporator fan from the housing panel WARNING DISCONNECT THE ELECTRICAL POWER THE MACHINE AT THE MAIN aer CIRCUIT BOX PLACE A TAG ON THE CIRCUIT lt INDICATING THE CIRCUIT IS BEING SERVICED 1 Remove the top and rear covers as outlined under COVERS AND PANELS 2 Remove the tracks or shelves from the cabinet and remove the shelf clips from the left rear shelf support 3 Remove the evaporator cover and open the evaporator fan panel as outlined under COVERS AND PANELS 6 Remove the fan from the cabinet CAUTION Do not attempt to disassembly motor or remove fan blades from motor blades are not available as a service part 7 Reverse the procedure to install HOT GAS CONDENSATE PAN 1 Remove the condensing unit cover as outlined under COVERS AND PANELS 2 Remove the bolts that secure the hot gas coil from the pan CAUTION Do not damage the coil during EVAPORATOR FAN PANEL removal 3 Lift the hot gas coil out of the pan 4 Disconnect the lead wires at the junction box 4 Liftthe hot gas pan to pull the Velcro apart on the top of the unit and pull them into the from the pan to the unit cavity with the fan i NY 1111111 5 Reverse procedure to ins
53. rge unit and check for leaks Put unit back into operation and check the superheat as outlined under TEV SUPERHEAT ADJUSTMENT in SERVICE PROCEDURES AND ADJUSTMENTS DOOR GASKET Select Stand by Mode Open door to maximum position Remove door gasket by pulling arrow shaped retaining tab from the retaining channel around the outer edge of the door PUSH DOOR MAGNET E GASKET RETAINER x GASKET CROSS SECTION TSP907C CAUTION When handling a new door gasket DO NOT pull on the gasket material The gasket material will stretch at room temperature and will NOT return to its original length 4 Position the corners of the gasket at the top corners of the door and push straight in on the gasket until the arrow tab is locked in the retaining channel IN Z INSTALL 4 CORNERS TSP908C Start the center of the top and work the gasket in place from the center to each corner 6 Install side by starting at the top and working down making sure the end of the gasket meets with the edge of the door CENTER OF EDGE PROCEED TO CORNERS _ d TSP909C 7 Check door for proper operation HEATERS WARNING DISCONNECT THE ELECT
54. s 8 Repeat steps 5 and 7 two additional times NOTE The final vacuum should be 200 microns or less 9 Charge the system as outlined under CHARGING SYSTEM 10 Replace any panels and covers removed 11 Reconnect power and check for proper operation SERVICE MODE ML 124059 ML 124060 ML 124063 The Service Mode allows service personal to exercise the loads and monitor the input of the Control independently to determine if the Control the electro mechanical components and the refrigeration system are operating properly WARNING THIS PROCEDURE REQUIRES THAT THE CONTROL BOX BE OPEN WHILE THE POWER IS SUPPLIED TO THE MACHINE EXERCISE EXTREME CAUTION AT ALL TIMES 1 The unit must be in the idle mode 2 Open the control box 3 Locate the service switch on the control board Push and hold the service switch then push the 9 key on the keyboard A maintenance menu will be displayed Service Switch Form 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS Maintenance Menu 1 Inputs 2 Outputs 3 Clock 4 Printer INPUTS Display Display Press Top Line Bottom Line Explanation Front door switch Status of input External defrost on or off Status of input Not used External defrost on or off Status of input Not used Spare switch input Status of input yes AIR temp PROBE 1 PROBE 2 PROBE 3 PROBE 4 COIL temp 7299 to di
55. se a anti static grounding kit when servicing the computer control box 1 Turn power off to the unit 2 Loosen the control panel screws and swing open control panel to gain access to service mode switch BACK SIDE OF CONTROL PANEL To ad Md E aw x 4 Coa 3 Locate the service mode switch on the back of control board press and hold switch while turning power ON to chiller The following menu will be displayed NOTE To exit the service mode at any time turn power OFF and back ON to display user main menu LAST DATE OF SERVICE 00 00 00 UPDATE SET CLOCK A Pressing the button beside UPDATE sets last date of service date to current date If date is INVALID set clock to current date and time Page 19 of 44 29 o S2 TEST SERVICE MODE SWITCH TEST 52 SET CLOCK Displays set clock menu to change the last date of service SET CLOCK XX XX XX BACK CANCEL 1 Pressing the button beside BACK or NEXT toggles through selection options MONTH DAY YEAR HOUR MINUTE 2 Pressing the button beside the up or down arrows changes the selected date or time numbers 3 Pressing the button beside ENTER saves the new date and time selected and displays on the last date of service menu 4 Pressing the button beside CANCEL does not save any
56. t or GAS refrigeration compressor NOTE This should remain ELE unless instructed otherwise FACTORY SETTINGS 23 DO YOU WISH TO SAVE YES Saves the settings to memory THESE NEW SETTINGS 24 NO Exit without saving changes NO YES gt SAVING SETTINGS 25 This display will be shown while the settings are being saved PLEASE WAIT FACTORY SETTINGS SETUP IS COMPLETE 26 When the settings have been saved restart the controller by turning power OFF then back ON RESTART CONTROLLER SOFTWARE VERSION SOFTWARE VERSION ML 124059 ML 124060 ML 124063 ML 124066 ML 124067 ML 124068 The control program software version can be The control program software version is displayed determined by pressing the O key when the main during initialization when unit is turned on The menu is displayed The display will show REV 2 1 display will show the chiller model number and the MODEL2 PUSH 0 TO EXIT 2L is the current current software version number version The version will match the version printed on the E Prom The E Prom is located on the control board in the control box i 1 O Smart Chill HQC 45 or 90 INITIALIZING VERSION X XX EPROM n HE aL 8 IMPORTANT NOTE Any change in the software could affect the operation of the Chiller ALWAYS check the software version before servicing this unit or calling for technical assistance Form 2469
57. t chilled Product temperature probes not located correctly or sensor malfunction System malfunction Refer to SYSTEM TROUBLESHOOTING Control Box malfunction Product frozen at edges Product too thick in pans Too long of run time in Manual Chill Mode Surface protection option not selected ML 124059 ML 124060 ML 124063 Soft Chill Mode not used ML 124066 ML 124067 ML 124068 Sensor probe malfunction Controller malfunction Power High voltage board ML 124059 ML 124060 ML 124063 Too cold blasting air selected Taking too long to chill Product too thick in pans Surface protection option selected ML 124059 ML 124060 ML 124063 Soft Chill Mode used ML 124066 ML 124067 ML 124068 Sensor probe malfunction System malfunction Refer to SYSTEM TROUBLESHOOTING Too warm blasting air selected CONDENSED SPARE PARTS LIST Form 24693 March 2001 Printed in U S A
58. t the pressure gauge to the suction port of the compressor 4 Operate the cabinet with the door open or with hot product 5 Adjust the CPR valve so the maximum pressure is 55 psig Form 24693 March 2001 Page 14 of 44 HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS TEV SUPERHEAT ADJUSTMENT Introduction Superheat is the heat that the refrigerant vapor absorbs above the boiling point Proper adjustment of the superheat will optimize system performance Helpful Hints e Adjustments normally take 10 15 minutes before full impact on the system e 8 10 degrees F is a desirable superheat at coil outlet Check suction line temperature and discharge line temperature after any superheat adjustment Procedure 1 Access the expansion valve 2 While the unit is cooling and evaporator fan panel closed take suction pressure at the compressor inlet or CPR valve outlet tap were applicable and temperature readings at the outlet of the evaporator coil NOTE The closer to the evaporator outlet the more accurate the readings 3 Using the Temperature Pressure Chart convert the pressure reading taken in step 2 into a temperature 4 Subtract the converted temperature from step 3 from the measured temperature in step 2 This is the superheat A superheat turn adjusting stem clockwise B decrease superheat turn adjusting stem counterclockwise TEMPERATURE
59. tall Page 13 of 44 24693 March 2001 HQC45 HQCF45 HQC90 QUICK CHILLER SERVICE PROCEDURES AND ADJUSTMENTS SERVICE PROCEDURES AND ADJUSTMENTS WARNING CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TEST OR MEASUREMENTS WHILE THE POWER IS APPLIED TO THE MACHINE EXERCISE EXTREME CAUTION AT ALL TIMES IF TEST POINTS ARE NOT EASILY ACCESSIBLE DISCONNECT POWER ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST REFRIGERATION CONTROL ADJUSTMENTS Expansion Valve 1 Access the expansion valve behind the evaporator fans 2 Remove seal cap from the side of the expansion valve Turn adjusting stem clockwise and seat valve Turn adjusting stem 2 1 2 turns counterclockwise This is the initial setting 5 Heassemble unit and check for proper operation Dual Pressure Control 1 Turn low pressure adjustment cut in screw to the initial setting of 10 psi 2 Turn diff adjustment screw to the initial setting of 12 psi 3 Turn high pressure adjustment cut out screw to the initial setting of 440 psi DUEL PRESSURE SWITCH SE 4 Check for proper operation CPR Valve Only for HQC45 ML124059 HQCF45 ML 124060 HQC90 ML 124063 1 Remove the rear condensing unit cover 2 Remove the insulation from the valve ADJUSTMENT SCREW INLET PRESSURE TAP OUTLET CPR VALVE TSP1254C 3 Connec
60. ud from condensing coil 3 Disconnect inlet and outlet lines at the soldered connections nearest the condenser coll Remove coil from mounting plate Reverse procedure to install coil then proceed to next step NOTE It is recommended that the filter drier be changed when this part is replaced 6 Evacuate system NOTE The use of reclaiming equipment is mandatory 7 Charge system and put unit into operation Form 24693 March 2001 HQCA45 HQCF45 HQC90 QUICK CHILLER REMOVAL AND REPLACEMENT OF PARTS Pressure Control WARNING THIS PROCEDURE REQUIRES THE USE OF REFRIGERANTS BE CERTAIN THE WORK AREA IS WELL VENTILATED SAFETY GOGGLES AND GLOVES SHALL BE WORN SINCE REFRIGERANTS MAY CAUSE BURNS TO THE SKIN 1 Pump down refrigeration system WARNING AFTER PUMP DOWN REFRIGERANT LINES WILL CONTAIN PRESSURE 2 Front seat the suction service valve 3 Disconnect wire leads to pressure switch 4 Disconnect capillary tube from compressor fitting 5 Remove pressure control from mounting bracket 6 Replace pressure switch and connect capillary tube to compressor fitting 7 Putunit back into operation Filter Drier WARNING THIS PROCEDURE REQUIRES THE USE OF REFRIGERANTS BE CERTAIN THE WORK AREA IS WELL VENTILATED SAFETY GOGGLES AND GLOVES SHALL BE WORN SINCE REFRIGERANTS MAY CAUSE BURNS TO THE SKIN Pump down refrigeration system WARNING AFTER PUMP DOWN REFRIGERANT LINES WILL CONTAIN PR

Service Manual 03/01/2001

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