Page 3 - ABLE OF; NTRODUCTION; Enabling the Auto Start feature; PERATION
UGH004/0999 microKool Portable Chillers T ABLE OF C ONTENTS I NTRODUCTION . . . . . . . . . . . . . . . . . . .1-1 Purpose of the User Guide . . . . . . . . . . . . . . . . . . . . . . . . .1-2How the guide is organized . . . . . . . . . . . . . . . . . . . . . . . .1-2Your responsibility as a user ...
Page 4 - AINTENANCE; DIAGNOSTICS; PPENDIX; ii
microKool Portable Chillers UGH004/0999 T ABLE OF C ONTENTS M AINTENANCE . . . . . . . . . . . . . . . (continued) Performing System Tests . . . . . . . . . . . . . . . . . . . . . . . . . .5-7The Key/Display Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8Input Test . . . . . . . ....
Page 5 - ATTENTION: Read this so
1-1 UGH004/0999 microKool Portable Chillers ● ● Purpose of the User Guide . . . .1-2 ● ● How the guide is organized . . . .1-2 ● ● Your responsibilities as a user .1-2 ● ● ATTENTION: Read this so no one gets hurt . . . . . . . . . . .1-3 I NTRODUCTION
Page 7 - EAD THIS SO NO; This equipment is powered by three-phase
UGH004/0999 microKool Portable Chillers I NTRODUCTION 1-3 We design equipment with the user’s safety in mind. You canavoid the potential hazards identified on this machine byfollowing the procedures outlined below and elsewhere in theUser Guide. ATTENTION: R EAD THIS SO NO ONE GETS HURT WARNING: Ele...
Page 9 - Freeze protection; ESCRIPTION
2-1 UGH004/0999 microKool Portable Chillers ● ● What is the microKool chiller? .2-2 ● ● Typical applications . . . . . . . . . .2-2 ● ● How it works: Water-cooled models . . . . . . . .2-3 ● ● How it works: Air-cooled models . . . . . . . . . . .2-4 ● ● Features . . . . . . . . . . . . . . . . . . ....
Page 11 - The evaporator removes the heat from the process fluid.; OW IT
Water-cooled models use tube-in-tube heat exchangers tocondense the hot, compressed, refrigerant gas from thecompressor to a cool liquid. The cool liquid refrigerant passes through a filter/dryer,which protects the system from moisture or other contami-nants. An in-line sight glass gives a visual in...
Page 13 - Water Connections; EATURES
UGH004/0999 microKool Portable Chillers D ESCRIPTION 2-5 Molded PlasticReservoirs Large,thick-walled, insulated polyethylenereservoirs providecorrosion-free operation.Low-water level sensors,external fill ports and levelindicators are standard. Water Connections All chilled water and con-denser wate...
Page 16 - Freeze Protection Requirements
F REEZE P ROTECTION R EQUIREMENTS microKool Portable Chillers UGH004/0999 2-8 D ESCRIPTION 60 50 40 30 20 10 0 -10 -20 -30 -40 -50 -60 20 0 40 60 80 100 40 30 20 10 0 -10 -20 -30 -40 -50 -60 -70 -80 20 0 40 60 80 100 Freeze Protection Requirements by Unit Set Temperature Freezing Points of Aqueous E...
Page 17 - NSTALLATION
3-1 UGH004/0999 microKool Portable Chiller ● ● Unpacking the boxes . . . . . . . . .3-2 ● ● Preparing for installation . . . . . .3-3 ● ● Connecting the water supply . .3-4 ● ● Connecting the main power . . .3-5 ● ● Testing the installation . . . . . . . .3-6 ● ● Entering setpoint deviation paramete...
Page 18 - Carefully remove the chiller
U NPACKING THE B OXES microKool Portable Chillers UGH004/0999 3-2 I NSTALLATION Carefully remove the chiller and components from their shipping containers, and set upright. Remove all packing material, protective paper, tape, and plastic. Check inside the electrical enclosureand behind the side pane...
Page 19 - Make sure the installation area provides:; A three-phase power source supplying the correct; Install plumbing for process and cooling lines.; REPARING FOR
UGH004/0999 microKool Portable Chillers I NSTALLATION 3-3 The microKool chiller is easy to install, if you plan the loca-tion and prepare the area properly. Position the chiller as close to the processmachine as possible. Make sure the installation area provides: ❒ ❒ A three-phase power source suppl...
Page 20 - Remove the shipping pipe plug; from the female; Install pipe to the rear of the chiller.; Follow the sealant manufacturer’s directions.; ONNECTING; Tools for installation:; Pipe wrench large enough
The chiller process inlets and outlets must be connected to theplumbing that will circulate the temperature-controlled wateror fluid through the process. Cooling water inlets and outletsare connected to the cooling water supply. Remove the shipping pipe plug from the female connections on the back o...
Page 21 - Open the unit’s electrical enclosure.; through the knockout; Connect the power wires to the terminals.; to the copper; WARNING: Electrical shock hazard
UGH004/0999 microKool Portable Chillers I NSTALLATION 3-5 Before beginning, note the electrical specifications on thenameplate mounted to the side of the unit. The electricalhookup must match these specifications with +/- 10% maxi-mum voltage variance. An improper power supply coulddamage the unit a...
Page 22 - Apply power to the unit.; ESTING THE
microKool Portable Chillers UGH004/0999 Turn on the condenser water supply (MPWunits) and check for leaks. If any leaks appear, stop the test and fix the problem before continuing. The waterpressure must be at least must be at least 25 PSI at thecondenser inlet. Apply power to the unit. ◆ Indicator ...
Page 23 - To change the temperature deviation settings:; Use the; The setting is; NTERING
UGH004/0999 microKool Portable Chillers I NSTALLATION 3-7 You can establish a normal operating range around the processtemperature setpoint using the high and low deviation parame-ters. If the process temperature exceeds the high deviationlimit, or falls below the low deviation limit for longer than...
Page 24 - NITIAL; Dip switch Configuration; WARNING: Electric shock hazard
microKool Portable Chillers UGH004/0999 3-8 I NSTALLATION I NITIAL S ETUP The factory-set parameters and operating modes will satisfymost applications. But you can change some settings andenable or disable features as needed. You can modify the parameters for high and low process tem-perature deviat...
Page 25 - HANGING; Disconnect and lock out main power; to the; Open the electrical enclosure.; OFF for °F; Close the electrical enclosure; and restore main
UGH004/0999 microKool Portable Chillers C HANGING T EMPERATURE U NITS The temperature units are factory-set as degrees Celsius ordegrees Fahrenheit, as specified when the unit was ordered. When the chiller is on, the indicator lights to the right of theActual temperature display on the control panel...
Page 26 - The Process Setpoint
microKool Portable Chillers UGH004/0999 The PC-1 and PC-2 controls provide the ability to protect sys-tem parameters from unauthorized changes during normaloperating mode. When system passcode protection is enabled,the following parameters cannot be changed unless you enterthe correct passcode: ● Th...
Page 27 - Disabling Passcode Protection
UGH004/0999 microKool Portable Chillers Press the RUN button to save the passcode. ◆ ◆ The control will display “Pr OFF” to prompt you to remove power to the unit. IMPORTANT: If RUN is not pressed, the newpasscode will not be saved. Turn off power to the unit. Disconnect and lock out the main power ...
Page 28 - To select the control point source on units with PC-2 control:; Disconnect and lockout power to the unit.; ELECTING THE
microKool Portable Chillers UGH004/0999 PC-1 microprocessors control the process temperature basedupon the average of the temperatures recorded at the supply(to process) and return (from process) thermocouples. The PC-2 microprocessor allows you to select how the unitwill measure and control the pro...
Page 29 - Press the RUN button to save the control point.; The control will display “Pr OFF” to prompt you to; Turn off power to the unit.; Disconnect and lock out
UGH004/0999 microKool Portable Chillers S ELECTING THE T EMPERATURE C ONTROL P OINT (PC-2 CONTROL ONLY ) I NSTALLATION 3-13 Press the RUN button to save the control point. ◆ ◆ The control will display “Pr OFF” to prompt you to remove power to the unit. IMPORTANT: If RUN is not pressed, the new contr...
Page 30 - The hole must be large enough to; Insert the two power leads from the device; through the conduit into the electrical enclosure.; NSTALLING THE
microKool Portable Chillers UGH004/0999 3-14 I NSTALLATION If you have a PC-2 microprocessor control, you can automati-cally start and stop the chiller from a remote switching or tim-ing device that has power contacts rated 110VAC, such as theprocess machine control. Wiring the device to the chiller...
Page 31 - When Auto Start is enabled:; The Auto Start indicator light flashes to indicate that the; To disable Auto Start:
UGH004/0999 microKool Portable Chillers I NSTALLATION 3-15 Set dip switch 4 to theON position. Close the electricalenclosure and restorepower to the unit. When Auto Start is enabled: ◆ The Auto Start indicator light flashes to indicate that the Chiller can start at any time. The chiller will start w...
Page 32 - Connect the host machine to the chiller.; CTIVATING; SPI; OMMUNICATION
microKool Portable Chillers UGH004/0999 3-16 I NSTALLATION MicroKool portable chillers provide SPI compatible supportfor RS-485 serial communications with a host machine. Youcan use SPI communication to change or monitor the: ● Process temperature setpoint ● High and low temperature deviation alarms...
Page 33 - Using the PC-2 pumpdown
4-1 UGH004/0999 microKool Portable Chiller ● ● PC-1 control features . . . . . . . . .4-2 ● ● PC-2 control features . . . . . . . . .4-3 ● ● Positioning the control panel . .4-4 ● ● Entering a passcode . . . . . . . . .4-5 ● ● Starting the chiller . . . . . . . . . . .4-6 ● ● Stopping the chiller . ...
Page 36 - OSITIONING; To raise and swivel the control panel:; Improper use of the swiveling; panel to a hot surface.
microKool Portable Chillers UGH004/0999 4-4 O PERATION P OSITIONING THE C ONTROL P ANEL The control panel on microKool chillers can be swiveled,raised and lowered to provide easy viewing and access. ThePC-2 control panel also can be mounted up to 50 feet fromthe unit, using a remote control cable an...
Page 37 - Press the Select; NTERING A
UGH004/0999 microKool Portable Chillers O PERATION 4-5 PC-1 and PC-2 controls have a security feature that preventsaccidental or unauthorized changes to the setpoint tempera-ture, high and low deviation limits, SPI address, and baud rate. If passcode protection is enabled, you must enter the correct...
Page 38 - Make sure the chiller tank is full of fluid.; TARTING THE
microKool Portable Chillers UGH004/0999 4-6 O PERATION Before starting the chiller, verify that the system has beeninstalled correctly for your application. See the I NSTALLATION section. If Passcode Protection has been enabled, you mustenter the correct passcode before you can change or enter anyof...
Page 39 - TOPPING THE; To shut down the unit:; Electrical shock hazard; SING THE
UGH004/0999 microKool Portable Chillers O PERATION 4-7 S TOPPING THE C HILLER You must shut down the chiller whenever you: ● Change water or process hookups. ● Shut down the process machine. ● Run the unit’s diagnostic tests. ● Perform routine or preventative maintenance. ● See an alarm condition th...
Page 40 - To ensure a successful Auto Tune, verify that:; The Auto Tune feature has been enabled. Auto Tune is; enabled or disabled via dip switch 2 on the motherboard.; The process value is stable. A fluctuating process value; Press to shut down the chiller.
You should perform an Auto Tune after the first two hours ofoperation and whenever process variables change (changes incondenser water pressure, piping or molds; large ambientswings; new setpoint temperature) to ensure that the controlcontinues to obtain good approximations of the PID constantsused ...
Page 43 - Disabling or enabling
5-1 UGH004/9499 microKool Portable Chillers ● ● Maintenance schedule . . . . . . . .5-2 ● ● Cleaning evaporators . . . . . . . .5-4 ● ● Cleaning condensers . . . . . . . .5-4 ● ● Filling the tank . . . . . . . . . . . . .5-5 ● ● Checking refrigerant charge . . .5-6 ● ● Performing system tests . . . ...
Page 44 - REVENTATIVE; Whenever process variables change; in the; Weekly, or as often as needed
microKool Portable Chillers UGH004/0999 5-2 M AINTENANCE P REVENTATIVE M AINTENANCE S CHEDULE To maintain the best performance, we recommend the follow-ing maintenance schedule. ● ● Whenever process variables change ❒ ❒ Perform an Auto Tune. The Auto Tune ensures that the control continues toobtain ...
Page 45 - Test and calibrate the unit’s control systems.; The chiller’s Test Mode checks the operation; Clean all surfaces that come in contact with water.
P REVENTATIVE M AINTENANCE S CHEDULE UGH004/0999 microKool Portable Chillers M AINTENANCE 5-3 ● ● Quarterly (every 3 months) ❒ ❒ Inspect power cords, wires and electrical connections. Check for loose or frayed wires, burned contacts, andsigns of overheated wires. Check exterior power cordsto the mai...
Page 46 - with; LEANING
Minerals and other water system contaminants producedeposits, scales, slime, or algae on the heat-transfer surfacesexposed to water. Fouled surfaces decrease cooling capacity.We recommend that you consult a water treatment specialist todevelop a treatment program that will minimize fouling. To clean...
Page 47 - To fill the reservoir:; Monitor; REFILLING; See; section for information on glycol mix-
The process fluid, which can be water or a glycol mixture, isheld in a tank inside the unit. This tank should be kept at leastthree-quarters full of the process fluid. You can check the fluid level inthe tank using the sight glass onthe back of the chiller. To fill the reservoir: Locate the fill por...
Page 48 - located; If the charge is low, recharge the system.; HECKING
microKool Portable Chillers UGH004/0999 5-6 M AINTENANCE All chillers are fully charged with refrigerant at the factory.Your chiller mode’s nameplate identifies the type and amountof total refrigerant charge required. While the unit is running, check the refriger-ant charge through the sight glass l...
Page 49 - ERFORMING
The microKool portable chillers provide a Test Mode that testsdisplays and keys on the control panel, as well as inputs andoutputs. The Test Mode also allows calibration of the supplyand return line thermocouples. System tests and calibration should be performed annually. To enable Test Mode: Press ...
Page 50 - EY
The Key/Display Test verifies the function of displays, LEDsand buttons on the control panel. Enable Test Mode. Press any key. If necessary, index to the Key/Display menu. Press and hold the Setpoint key for 3 seconds to indexto each test menu until the controller displays “dSP”. Press any key to cl...
Page 51 - NPUT
The Input Test verifies the function of inputs available on thevarious models of the microKool chiller. Not all inputs areused on all models. The performance evaluation of the inputsis based on the voltage sensing device (VSD). Connect all inputs to the system. Press any key to display the first tes...
Page 52 - Connect all outputs to the system.
O UTPUT T EST microKool Portable Chillers UGH004/0999 5-10 M AINTENANCE The Output Test verifies the function of outputs available onthe various models of microKool chillers. Not all outputs areused on all models. The performance evaluation of the inputsis based on the output monitors (OM). Connect ...
Page 53 - ISABLING OR
All output monitors on the microKool chiller can be enabledor disabled permanently through the OM Enable/DisableMenu in Test Mode. You need to use this feature if you have replaced the mother-board, or if dip switches 7 and 8 have been changed erro-neously. This will enable any required output monit...
Page 54 - Press any button to display the first test menu.; Select the Calibration Mode menu.; ALIBRATING; Special Tools Needed:; thermocouple calibrator
The microKool chillers use thermocouples to sense the tem-perature in the return and supply process lines. These thermo-couples should be calibrated annually, or when a new thermo-couple is installed, to ensure correct operation. The chiller’s Calibration Mode provides zero and span calibra-tion of ...
Page 55 - switch 6 to OFF instead of ON.
Press the up ▲ ▲ key to begin calibrating. The controller displays the name of the current calibration(examples: 32 SC.L; 32 rC.L; 510 SC.H; or 510 rC.H). Wait until the control displays “don” or “bad.” A “don” message in the Setpoint display indicates the cali-bration was successful. A “bad” messag...
Page 56 - OGGING
You can see the total numbers of operation by accessing theTotal Operating Hours Log in Test Mode. Enable Test Mode. Press any key to display the first test menus. Index through test menus to the operating log. Press and hold the Setpoint key for 3 seconds to indexto each test menu until the Actual ...
Page 57 - How to identify the cause; IAGNOSTICS; Replacing the compressor
6-1 UGH009/0999 microKool Portable Chillers ● ● Before beginning . . . . . . . . . . . .6-2 ● ● A few words of caution . . . . . . .6-2 ● ● How to identify the cause of a problem . . . . . . . . . . . . . . .6-3 D IAGNOSTICS ● ● Shut down alarms . . . . . . . . . . .6-4 ● ● Warning alarms . . . . . ...
Page 58 - A F; This machines should be
You can avoid most problems by following the recommendedinstallation, operation and maintenance procedures outlined inthis User Guide. If you do have a problem, this section willhelp you determine what caused it and tell you how to fix it. Before you begin troubleshooting: ❏ Find the wiring, plumbin...
Page 59 - A problem can trigger three types of alarms:; Shut Down Alarms: The chiller detected a problem that; When an Alarm condition occurs:; OW TO
UGH004/0999 microKool Portable Chillers T ROUBLESHOOTING 6-3 A status light that turns fromgreen to red indicates analarm condition. Most chiller malfunctions are indicated by an illuminatedalarm light and error codes displayed on the control panel. A problem can trigger three types of alarms: ● ● S...
Page 60 - HUT; Alarm; Possible cause; Did the compressor fail?; Solution; The Alarm LED lights and the STOP/RUN LED flashes red.; SAF
microKool Portable Chillers UGH004/0999 6-4 T ROUBLESHOOTING S HUT D OWN A LARMS Alarm The pump motoroverload hastripped. The contact is open. WARNING: Only qualified electri-cal service personnelshould examine andcorrect problems thatrequire opening theunit's electrical enclosure or checkingelectri...
Page 61 - Has the freezestat failed?
UGH004/0999 microKool Portable Chiller T ROUBLESHOOTING 6-5 S HUT D OWN A LARMS The chiller has detected a problem that could lead to equipmentdamage or personal injury if it is not corrected. ◆ The Alarm LED lights and the STOP/RUN LED flashes red. ◆ The chiller automatically shuts down. ◆ The cont...
Page 63 - Is the compressor faulty?
UGH004/0999 microKool Portable Chiller T ROUBLESHOOTING 6-7 S HUT D OWN A LARMS The chiller has detected a problem that could lead to equipmentdamage or personal injury if it is not corrected. ◆ The Alarm LED lights and the STOP/RUN LED flashes red. ◆ The chiller turns off the compressor, but normal...
Page 64 - Low refrigerant pressure:
S HUT D OWN A LARMS microKool Portable Chillers UGH004/0999 6-8 T ROUBLESHOOTING Alarm Refrigerant pressureis either too low ortoo high. WARNING: The microKool shouldbe tested and repairedonly by qualified techni-cians equipped with thecorrect tools andtrained in the mainte-nance and repair ofelectr...
Page 65 - High refrigerant pressure
S HUT D OWN A LARMS UGH004/0999 microKool Portable Chillers T ROUBLESHOOTING 6-9 Alarm Refrigerant pressureis either too low ortoo high. Process fluid in thechiller tank is at theminimum level. The Freeze StatInput is open. Possible cause High refrigerant pressure Is the temperature of thecondenser ...
Page 66 - ARNING
microKool Portable Chillers UGH004/0999 6-10 T ROUBLESHOOTING W ARNING A LARMS Alarm The actual temper-ature of fluid sup-plied to the processis lower than thesetpoint deviationlimit allows. The actual temper-ature of fluid sup-plied to the processis higher than thesetpoint deviationallows. The SPI ...
Page 67 - YSTEM; through; Cause
UGH004/0999 microKool Portable Chillers T ROUBLESHOOTING 6-11 S YSTEM A LARMS Alarm RAM hardwarefailure. ROM, checksumfailure. COP failures. Illegal Opcode. through Software cannotwrite to CPU non-volatile memory. Cause Electrical noise or failedCPU on the motherboardcaused system write testsdo fail...
Page 68 - Symptom; Is the unit in Test Mode?; Verify that the main power
microKool Portable Chillers UGH004/0999 6-12 T ROUBLESHOOTING C HILLER W ILL N OT P OWER U P If you apply power to the chiller and the control panel does notlight, you have a problem with the main power circuit or theunit’s microprocessor board. WARNING: Electrical Shock HazardDisconnect and lockout...
Page 69 - HECKING AND; Always; To replace a blown fuse:; Close the electrical enclosure and restart the unit.; If fuses continue to fail:; Shock Hazard
UGH004/0999 microKool Portable Chillers T ROUBLESHOOTING 6-13 C HECKING AND R EPLACING F USES IMPORTANT: Always refer to the wiring dia-grams that came withyour chiller to locate spe-cific electrical compo-nents. Illustrations in theUser Guide are intendedto be representative only. This procedure co...
Page 70 - ESETTING; EPLACING THE
Disconnect and lockout the main power. Open the electrical enclosure door. Turn the screw on the front panel counterclockwise to open. Locate the pump overload module attached to the pump motor starter. Disconnect the three power leads from the over- load module to the pump motor. Note the placement...
Page 71 - Disconnect and lockout the main power supply.
UGH004/0999 microKool Portable Chillers T ROUBLESHOOTING 6-15 R EPLACING THE M OTHERBOARD IMPORTANT: Always refer to the wiring dia-grams that came withyour chiller to locate spe-cific electrical compo-nents. Illustrations in theUser Guide are intendedto be representative only. Disconnect and lockou...
Page 72 - Electrical Shock Hazard; Only qualified service personnel who have been
The compressor may be located in the compressor electricalenclosure or in the main chiller electrical enclosure, depend-ing on the model of your chiller. The compressor contactor should be replaced if: ● You have checked the amp draw on each of the three-phase legs and discovered a voltage imbalance...
Page 73 - Clear any alarms and restart the chiller.; The unloader valve light should turn on for 2 seconds
UGH004/0999 microKool Portable Chillers T ROUBLESHOOTING 6-17 The unloader valve is located between the compressor and thecondenser on both air-cooled and water-cooled chillers. Itworks only during low demand conditions, when loads are upto 24% below normal. During low-load conditions, the compresso...
Page 74 - Disconnect and lockout the power supply.; Remove the insulation around the bulb.; Mark the wires so that you can easily reconnect; Remove the entire freezestat unit.; Threat the bulb and capillary through the raceway.; Reverse the process to install the new unit.
microKool Portable Chillers UGH004/0999 6-18 T ROUBLESHOOTING The freezestat unit is a bulb and capillary thermostat. Toreplace the unit: Shut down the chiller and disconnect theprocess fluid lines. Disconnect and lockout the power supply. Drain the tankof all fluid through the drain valve in thebas...
Page 75 - To contact Customer Service personnel, call:; RE
IMS0002/0296 S ERVICE I NFORMATION A PPENDIX A-1 Conair has made the largest investment in customer support inthe plastics industry. Our service experts are available to helpwith any problem you might have installing and operatingyour equipment. Your Conair sales representative also can helpanalyze ...
Page 76 - Inspect the equipment and perform alterations or
W ARRANTY I NFORMATION IMS0003/0796 A PPENDIX A-2 E QUIPMENT G UARANTEE P ERFORMANCE W ARRANTY W ARRANTY L IMITATIONS Conair guarantees the machinery and equipment on this order,for a period as defined in the quotation from date of shipment,against defects in material and workmanship under the norma...
Page 77 - SPI C; SPI Command Pairs
UGH004/0999 C HILLER SPI C OMMANDS A PPENDIX B-1 The SPI commands supported by Conair microKool portablechillers are listed in the following tables. The standard required commands and three optional com-mands are listed in the SPI Command Pairs table, along withthe Select and Poll command pairs in h...
Page 78 - SPI S; TATUS
Status, Process Poll: 0x21 0x40 SPI STATUS WORD Word BIT position 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 EEprom error SET SET * A/D converter error SET SET * CJC Error SET SET * RAM hardware SET SET * ROM checksum SET SET * Probe Failure SET SET * E/M Hi temp safety * Prog. Hi temp safety * Output mo...
Page 81 - ARTS
PD-1 UGH004/0999 microKool Portable Chillers ● ● PC-1 Wiring Diagram . . . . . . . .PD-2 ● ● PC-1 Circuit Board . . . . . . . . .PD-3 ● ● PC-2 Wiring Diagram . . . . . . . .PD-4 ● ● PC-2 Circuit Board . . . . . . . . .PD-5 ● ● Parts Lists . . . . . . . . . . . . . . . .PD-6 P ARTS /D IAGRAMS
Page 83 - CIRCUIT BOARD
UGH004/0999 PC-1 C IRCUIT BOARD PD-3 CONFIGURATION DIP SWITCH OFF ON 4321 4321 UNLDR 2/ VENT 2 SOL + UNLDR 2/ VENT 2 SOL UNLDR 1/ COOL 1 SOL + UNLDR 1/ COOL 1 SOL F5 F4 F2 PUMPPUMP PUMP OLPUMP OL 654321 4321 654321 F3 4321 F6 PMP AUXPMP AUX 1FS/ PURGE/ COMP AUX 1FS/ COMP AUX NOT USEDNOT USED HEAT/CO...
