Conair UGH016/0500 manual Preventative Maintenance Schedule, Checking electrical connections

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PREVENTATIVE

MAINTENANCE

SCHEDULE

To maintain the best perfor- mance, follow the mainte- nance schedule and record information in the Maintenance Log in the Appendix.

●Daily, or as often as needed

❒Checking electrical connections

Make sure electrical connections are properly seated. See Checking Electrical Connections, in the Maintenance section.

❒Checking process fluid level in the pump tank Check the process fluid level in the water level gauge on the back of the chiller. If low, see Filling the Chiller, in the Installation section.

❒Verifying pump discharge pressure

While the pump is running, check that the pump pres- sure gauges are within range. To change the pressure open or close the From Process valve.

❒Inspecting piping for leaks

Check to see that pipes are not leaking. Look for standing water on the floor or inside the chiller cabi- net.

❒Inspecting the condenser coil for debris

(air-cooled models only) Remove the wire mesh side panel in front of the condenser coil. Remove any debris from the coils.

●Weekly, or as often as needed

❒Checking temperature and pressure readings Check that the temperature and pressure display on the control screen, and that the pressure gauge indicates normal operation.

❒Checking efficiency

Review the performance data on the Maintenance Log found in the Appendix. If you notice a decrease in effi- ciency over time, check all heat transfer surfaces of the evaporator and condenser for fouling. Clean as needed.

❒Checking refrigerant site glass

There should not be any bubbles. See Checking Refrigerant Charge, in the Maintenance section.

❒Checking reservoir level

Check the water level gauge on the back of the chiller. If fluid level is low, fill. See Checking Reservoir Level, in the Maintenance section.

5-4

MAINTENANCE

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? Temperature Typical ApplicationsCooling load 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 Filling the Chiller Attach water hose to Fill/Drain valveOpen the Fill/Drain valve and fill chiller 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 Initially Starting Chiller Press the Start Chiller buttonCheck the rotation of the pump Check the compressorStopping the Chiller Operation TIC Control Features DisplayBefore Starting Check that the casters are lockedStarting Stopping Chiller Changing Settings Changing Setpoint TemperaturePress Menu button once Press the Up/Down arrowsChanging Temperature Scale Changing to Auto Tune ModeChanging Auto Tune Mode Use the Up/Down arrows to changePress Enter button Apply a load to the ChillerSetting the to Process LOW Limit Maintenance Maintenance Features UGH016/0500 Series 1 Portable Chillers, TIC Control Preventative Maintenance Schedule Checking electrical connectionsInspecting the condenser coil for debris Checking refrigerant site glassCleaning Cleaning process fluid strainerInspecting cooling water treatment system Inspecting condenserCheck the refrigerant charge through the sight glass Cleaning Evaporator or WATER-COOLED Condenser Cleaning AIR-COOLED Condenser Coil cleanerInspect the coils Use a flashlight to check between coil surfacesBe sure the main power is disconnected Disconnect and lockout power to the chiller Checking Reservoir LevelLocate the fill port on the back of the chiller 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 Faulty contactor Faulty overload modulePump Overload Overload set incorrectly. pump and compres Low supply voltageAlarm Possible cause Overload set incorrectlyClogged/dirty air-cooled Compressor discharge Valve closedFailed flow switch Pressure switch isFaulty No or low flow with aCompressor failed Contact Conair Service Leads are backwardsChecking Replacing Switches Check the switchReplace the switches as needed Slide the top of the switch housing over untilDisconnect the wiring from the contactor Reconnect the wiring and reconnect powerReplacing the Contactor Remove the contactor by snapping offChecking and Replacing Slide the new controller in until Replacing Temperature ControllerContact Conair Service for the temperature Reconnect wires and leads Restore power to the chillerReplacing Overload Modules Rating of compressor, fan or pumpReplacing Fuses Remove and replace fusesRemove the pump assembly Inspect, clean, and replace pump partsRemoving Pump Components Open the drain/fill valveChecking Pressure Switches Locate the pressure switchDAY Time 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