Maintenance Checklist

February 12, 2018 - "Press Releases"

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Maintenance Checklist-Weekly

   1.      Inspect and clean condenser and airfilter.

Excessive buildup of dirt, oil and other debris on the condenser coil will cause refrigerant pressures to increase and prevent operation at full capacity. Ensure that the fins of the condenser are clean and not damaged to keep airflow at a maximum. Use compressed air at no more than 30 psi (2.0 bar; 200kPa) to blow out the condenser in the opposite direction of airflow.

   2.      Check to make sure that the temperature is maintained close to the setpoint temperature. If the temperature stays more than 5°F (3°C) from the setpoint, there may be a problem with the chiller. If this is the case, contact the Glen Dimplex Thermal Solutions Service Department.

   3.      Check for normal inlet and outlet fluid pressures through the chiller. A large pressure differential could indicate a plugged heat exchanger or dirty tank.

Maintenance Checklist-3-6 months

   1.      Inspect and clean condenser and airfilter.

Excessive buildup of dirt, oil and other debris on the condenser coil will cause refrigerant pressures to increase and prevent operation at full capacity. Ensure that the fins of the condenser are clean and not damaged to keep airflow at a maximum. Use compressed air at no more than 30 psi (2.0 bar; 200kPa) to blow out the condenser in the opposite direction of airflow.

   2.      Inspect process fluid filters unless system requires more frequent changing.

Maintenance Checklist- Yearly

   1.      With the main disconnect shut OFF, check the condition of electrical connections at all contractors, starters and controls. Check for loose or frayed wires.

   2.      Check the incoming voltage to make sure it is within 10% of the design voltage for the chiller

   3.      Check the amp draws to each leg of the compressor and pump to confirm that they are drawing the proper current.

Have a qualified refrigeration technician inspect the operation of the entire unit to ensure proper operation.

   4.      Have condenser cleaned if necessary.

   5.      Check the process fluid to be sure it is clean and free of contaminants. Check the reservoir, for debris and contaminants. Test the process fluid to ensure proper freeze and corrosion protection.

   6.      Check refrigerant sight glass for air bubbles or moisture indication. If the sight glass indicates a refrigeration problem, have the unit serviced as soon as possible.

   7.      Check the in-line strainer and remove any buildup. The fitting removes with a wrench, either ¼” or ½”.

   8.      Inspect all internal and external wiring for loose connections and damage.

   9.      Check voltage and current draws on all motors and heaters. Refer to the chiller’s electrical schematics or the motor nameplate for proper voltage and amperage ratings. Readings should be below name plate values. See factory provided data-pack for a reference amp draw. Note for three phase chillers the amps between each phase can be +/-2%.

   10.  Check the inside of the chiller for evidence of refrigerant leaks, such as oil spots or refrigeration lines covered in oil. Have a certified refrigeration technician make any repairs

For more information, please consult the manual. For phone support, please call 1-800-968-5665.

2625 Emerald Drive | Kalamazoo, Michigan | www.dimplexthermal.com 

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