Conair UGH016/0500 manual Compressor discharge, Valve closed

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MECHANICAL

CONDITIONS

CONT’D

Alarm

Possible cause

Solution

High Discharge	Compressor discharge
Pressure, cont’d	valve closed.

Overcharged with refrig- erant.

Faulty water regulating valve.

Faulty pressure switch.

Open valve.

See Checking the Refrigerant Charge in the Maintenance section.

Repair or replace the valve.

See Checking the Pressure Switches, in the Troubleshooting section.

6-12TROUBLESHOOTING Series 1 Portable Chillers, TIC Control

UGH016/0500

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Contents Portable Chillers Conair GROUP, INC Table of Contents IntroductionParts and Diagrams . . . . . . . . . . . .P/D-1 Introduction Your Responsibility AS a User Purpose User GuideHOW Guide is Organized Read this SO no ONE Gets Hurt Page Description What is Portable CHILLER? Cooling load TemperatureTypical Applications LocationHOW IT Works WATER-COOLED Portable Chiller Process circulationHOW IT Works HOW IT Works AIR-COOLED Portable Chiller HOW IT Works AIR-COOLED Portable ChillerChiller Features Water-cooled ModelsPortable Chiller Features Air-cooled ModelsSpecifications ModelSpecifications Pump Curves Installation Unpacking the Boxes UGH016/0500 Series 1 Portable Chillers, TIC Control Available water source Preparing for InstallationGrounded power source Connect the To Process valve and tubing on Making Process Plumbing ConnectionsWrap threads with Mylar or Teflon tape Open the Fill/Drain valve and fill chiller Filling the ChillerAttach water hose to Fill/Drain valve Close the Fill/Drain valveChange the minimum operating temperature Check the coolant levelChecking Refrigerant Charge Connecting Main Power Source Connect the ground wire to grounding lugOpen electrical enclosure Close the electrical enclosure Turn on main power sourceChecking Electrical Connections Check the rotation of the pump Initially Starting ChillerPress the Start Chiller button Check the compressorStopping the Chiller Operation TIC Control Features DisplayBefore Starting Check that the casters are lockedStarting Stopping Chiller Press Menu button once Changing SettingsChanging Setpoint Temperature Press the Up/Down arrowsChanging Temperature Scale Changing to Auto Tune ModePress Enter button Changing Auto Tune ModeUse the Up/Down arrows to change Apply a load to the ChillerSetting the to Process LOW Limit Maintenance Maintenance Features UGH016/0500 Series 1 Portable Chillers, TIC Control Inspecting the condenser coil for debris Preventative Maintenance ScheduleChecking electrical connections Checking refrigerant site glassInspecting cooling water treatment system CleaningCleaning process fluid strainer Inspecting condenserCheck the refrigerant charge through the sight glass Cleaning Evaporator or WATER-COOLED Condenser Inspect the coils Cleaning AIR-COOLED CondenserCoil cleaner Use a flashlight to check between coil surfacesBe sure the main power is disconnected Locate the fill port on the back of the chiller Disconnect and lockout power to the chillerChecking Reservoir Level Refill the reservoirTroubleshooting Before Beginning FEW Words of CautionIdentifying Cause Problem DAY TimeAnswering AN Alarm Pump Compressor Alarm Condition Description StatusThere is a problem with the control panel Control ProblemsPower is not reaching the chiller Symptom Possible cause Solution Input voltage is incorrect There is a phase lossWater level in tank is low Failed Level switchMechanical Conditions Low Pump Overload Overload set incorrectly. pump and compres Faulty contactorFaulty overload module Low supply voltageAlarm Possible cause Overload set incorrectlyClogged/dirty air-cooled Compressor discharge Valve closedFaulty Failed flow switchPressure switch is No or low flow with aCompressor failed Contact Conair Service Leads are backwardsReplace the switches as needed Checking Replacing SwitchesCheck the switch Slide the top of the switch housing over untilReplacing the Contactor Disconnect the wiring from the contactorReconnect the wiring and reconnect power Remove the contactor by snapping offChecking and Replacing Slide the new controller in until Replacing Temperature ControllerContact Conair Service for the temperature Replacing Overload Modules Reconnect wires and leadsRestore power to the chiller Rating of compressor, fan or pumpReplacing Fuses Remove and replace fusesRemoving Pump Components Remove the pump assemblyInspect, clean, and replace pump parts Open the drain/fill valveDAY Time Checking Pressure SwitchesLocate the pressure switch Check the connectionsCheck the continuity within the switch Make sure it corresponds to the following conditionsPage WE’RE Here to Help From outside the United States, call2SERVICE Information Warranty Information Maintenance LOG Date Maintenance ItemPage Pressure Tables Appendix C-2Control Settings Display Parameter Description Setting UnitsPage Parts & Diagrams Recommended Spare Parts Part Number DescriptionSpare Parts P/D-3 4SPARE Parts Spare Parts P/D-5 6SPARE Parts