Conair MPW, MPA manual Replacing the Motherboard

Page 71

1

2

Disconnect and lockout the main power supply.

Open the electrical enclosure door. Turn the screw on the front panel counterclockwise to open.

REPLACING THE MOTHERBOARD

3 Mark or label each wire connected to the mother- board. The orange shield is labeled with the connection information. You must label the wires to ensure they are con- nected to the correct terminals on the new motherboard.

4 Disconnect the wires from the motherboard by pulling the terminal blocks up.

5 Loosen the screws hold-

 

 

 

 

 

6 5 4 3 2 1

4 3 2 1

 

 

 

AC IN 4

AC IN + 3

AC OUT 2

AC OUT + 1

 

LLS/WPS LLS/WPS AUTOSTART AUTOSTART HPS/LPS HPS/LPS

OPS OPS FSTAT FSTAT

L1

L2

L3

F1

3 PHASE INPUT

 

 

 

 

 

F5

 

 

 

 

 

 

 

 

 

 

 

 

 

UNLDR 1/ VENT 2 SOL

+

 

4

 

 

UNLDR 1/ VENT 2 SOL

 

 

3

 

 

UNLDR 2/ COOL 1 SOL

+

 

2

 

 

UNLDR 2/ COOL 1 SOL

 

 

1

 

 

F4

 

 

 

 

 

 

 

PUMP

 

 

 

 

 

 

4

 

 

 

PUMP

 

3

 

 

 

PUMP OL

 

2

 

 

 

PUMP OL

 

1

 

 

F2

 

 

 

 

 

 

PMP AUX

 

 

 

 

 

 

 

6

 

 

PMP AUX

 

 

5

 

 

1FS/ PURGE/ COMP AUX

 

 

4

OFF

 

1FS/ COMP AUX

 

 

3

8 7 6 5 4 3 2 1

PUMPDOWN

 

 

2

 

 

PUMPDOWN

 

 

1

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

 

 

 

HEAT/COMP

4

 

 

 

 

 

 

 

 

 

 

 

HEAT/COMP

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

CONFIGURATION

 

 

 

HTS/COMP OL

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

DIP SWITCH

 

 

 

HTS/COMP OL

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F3

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

NC

 

 

 

 

 

 

 

 

 

 

 

 

ALARM

3

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

CONTROL2)-( CABLEPNLOPER

 

 

 

 

110V

Ohm120+

TR+

TR

GND

GND

TR+

TR

Ohm120

SUP RET

 

 

 

4

 

 

 

 

 

 

 

 

 

LLS/PURGE 3SOL

 

 

 

 

 

 

 

 

 

 

LLS/PURGE 3SOL

+

3

 

 

 

 

 

 

 

 

 

 

 

PURGE 4SOL

 

2

 

 

 

 

 

 

 

 

 

 

PURGE 4 SOL

+

1

 

 

 

 

 

 

 

 

 

TCPL'S

 

F6

 

 

 

 

 

 

 

 

 

 

Y R R Y

 

 

 

1

2

3

4

5

6

7

8

 

1

2

3

4

 

 

 

IMPORTANT: Always refer to the wiring dia- grams that came with your chiller to locate spe- cific electrical compo- nents. Illustrations in the User Guide are intended to be representative only.

ing the orange shield.

6 Remove the mother- board and shield from the electrical enclosure as a unit.

7 Remove the mother- board from the shield

and replace with the new motherboard.

8 Reattach the shield and new motherboard in the

electrical enclosure. Tighten the screws.

9 Reconnect the terminal blocks and wires to the new board.

6 5 4 3 2 1

 

4 3 2 1

 

 

 

 

 

 

4INAC

3+INAC

2OUTAC

1+OUTAC

F1

LLS/WPS LLS/WPS AUTOSTART AUTOSTART HPS/LPS HPS/LPS

OPS OPS FSTAT FSTAT

L1

L2

L3

 

 

 

 

 

 

 

3 PHASE INPUT

F5

 

F5

 

 

 

 

 

 

UNLDR 2/ VENT 2 SOL

+

 

 

 

 

 

4

 

 

 

 

 

3

UNLDR 2/ VENT 2 SOL

 

 

 

 

 

 

 

 

 

 

 

 

2

UNLDR 1/ COOL 1 SOL

+

 

 

 

 

 

 

 

 

 

 

1

UNLDR 1/ COOL 1 SOL

 

F4

 

 

 

 

 

 

F4

 

 

 

 

 

 

 

4

PUMP

 

 

 

 

 

 

 

 

 

 

 

 

3

PUMP

 

 

 

 

 

 

 

 

 

 

 

 

2

PUMP OL

 

 

 

 

 

 

 

 

 

 

 

 

1

PUMP OL

F2

 

 

 

 

 

 

F2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PMP AUX

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PMP AUX

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1FS/ COMP AUX

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1FS/ COMP AUX

 

 

 

OFF

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

PUMPDOWN

 

 

 

 

 

 

 

8

7

6

5

4

3

2 1

 

1

 

 

 

 

 

 

 

PUMPDOWN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HEAT/COMP

 

4

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

HEAT/COMP

 

3

 

 

 

 

 

CONFIGURATION

HTS/COMP OL

 

2

 

 

 

 

 

 

DIP SWITCH

HTS/COMP OL

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F3

 

 

F3

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ALARM

NC

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ohm120+

TR+

TR GND

GND

TR+

TR Ohm120

 

 

 

 

CONTROL2)-(

CABLEPNLOPER

SUP RET

110V

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LLS/PURGE 3SOL

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LLS/PURGE 3SOL

+

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PURGE 4SOL

+

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PURGE 4SOL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TCPL'S

 

F6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Y R R Y

 

 

 

 

 

 

 

 

 

1

2

3

 

4

5

6

7

8

 

 

 

 

Make sure you align the terminal blocks with the correct pins on the board. Push the terminal blocks onto the pins, taking care not to bend any pins.

10

11

Set dip switches 7 and 8 to the correct unit type.

Set switch 7 to ON and switch 8 to OFF for chillers.

Program output monitors on the new board.

See DISABLING OR ENABLING OUTPUT MONITORS in the

MAINTENANCE section.

UGH004/0999

microKool Portable Chillers

TROUBLESHOOTING 6-15

Page 70 Page 72
Image 71
Page 70 Page 72
Contents Page Date Manual Number UGH004/0999 Serial numbers Model numbers Introduction Table of ContentsTroubleshooting Introduction Your Responsibility AS a User Purpose User GuideHOW Guide is Organized Read this SO no ONE Gets Hurt Page Description Typical Applications What is the MicrokoolCHILLER? HOW IT Works Water Cooled HOW IT Works AIR Cooled High Efficiency Compressors FeaturesPsi Pressure Specifications MPW Water CooledMPA-5 Specifications MPA AIR CooledFreeze Protection Requirements Freezing Points of Aqueous Ethylene Glycol SolutionsInstallation MicroKool Portable Chillers come fully assembled UnpackingBoxes Install plumbing for process and cooling lines Preparing for InstallationMake sure the installation area provides Coat the pipe threads with thread sealant Connecting Process Water Supply LinesInstall pipe to the rear of the chiller Remove the shipping pipe plug from the femaleOpen the unit’s electrical enclosure Connecting Main Power SupplyUnits and check for leaks. If any leaks appear, stop Testing the InstallationApply power to the unit Turn on the condenser water supply MPWEntering Setpoint Deviation Parameters Dip switch Configuration Initial SetupOpen the electrical enclosure Change Dip Switch 1 to Changing Temperature UnitsSetpoint adjustment buttons Disconnect and lock out main power to the unitOpen the electrical enclosure Set dip switch 3 to on Select a new passcode usingFollow Steps 1 through 5 Press the RUN button to save the passcodeOpen the electrical Select a new control point using the Display button Selecting Temperature Control PointPress the RUN button to save the control point Set dip switch 5 toInsert the two power leads from the device Installing Auto Start FeatureTo disable Auto Start Set dip switch 4 to the on positionWhen Auto Start is enabled Enter the node address Apply power to the chiller Enter the passcode, if necessaryActivating SPI Communication Connect the host machine to the chillerOperation Setpoint display PC-1 Control FeaturesPumpdown On/Off PC-2 Control FeaturesTo detach the PC-2 control panel Positioning Control PanelTo raise and swivel the control panel To lower the control panelPress Setpoint to select the parameter you want to change Entering a PasscodeEnter the passcode Starting the ChillerPress Button to turn on Pumpdown Using Pumpdown FeatureStopping the Chiller To shut down the unit Press StopPerforming AN Auto Tune Insufficient setpoint/process deviation Page Maintenance Preventative Maintenance Schedule Quarterly every 3 months Inspect power cords, wires and electrical connectionsCleaning Condensers Cleaning EvaporatorsTo fill the reservoir Refilling the TankLocate the fill port at Back of the chiller If the charge is low, recharge the system Checking Refrigerant ChargeThen open the electrical enclosure Set dip switches 3Performing System Tests Press To shut down the chillerKEY/DISPLAY Test Select the Input Test menu Input TestConnect all inputs to the system Press any key to display the first test menusSelect the Output Test menu Output TestConnect all outputs to the system Save changes and exit the output menu Select the OM Enable/Disable menuDisabling or Enabling Output Monitors Release the Setpoint key Calibrating Temperature SensorsPress Select Exit Calibration ModePress the up key to begin calibrating Wait until the control displays don or badExit the Operating Hours Log Logging Operating HoursIndex through test menus to the operating log Troubleshooting Messages shown on the control panel. These Before BeginningFEW Words Verify that you have manuals for other equipCause of a Problem HOW to IdentifyGreater than the pump’s Supplied to the pumpMotor? Is the required water flowLoose? Is the thermocoupleDisconnected? Ply wire leads becomeLevel Switch fuse Has the indicated device Has one of the main supCompressor Air-cooled units Shut Down AlarmsRefrigerant pressure is either too low or too high All modelsFlow through he evapora Is the freezestat settingInstalled correctly? Freeze Stat Input is open Is there sufficient fluidCable? Is something wrong withSystem Alarms Chiller Will not Power UP Replace the fuse. The fuses are located on the mother Checking Replacing FusesIf fuses continue to fail On the front panel counterclockwise to openLocate the pump overload module attached Resetting OverloadsCheck the overload Replacing the Motherboard Remove and discard the old contactor Reverse this procedure to install the new conReplacing Compressor Contactor Checking Unloader Valve Replacing the Freezestat From outside the United States, call WE’RE Here to HelpAppendix A-2 SPI Command Pairs SPI Commands Supported by Conair MicrokoolStatus, Process SPI Status WordsStatus, Machine Appendix B-4 PARTS/DIAGRAMS PD-2 PD-3 PD-4 PD-5
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