Dunham-Bush Rotary Screw Water Chiller WCFX10

Wipe down external surfaces of unit

Inspect control panel for issues

Restart unit and check performance

Inspect for physical disfigurement of the gasket

Check for signs of deterioration

Does the gasket need renewal based on inspection results?

Document the inspection results

Check the current oil level in the compressor

Is the oil return visible in the compressor?

Drain the old oil from the compressor

Refill the compressor with new oil

Check flash economizer feed line sightglass for bubbles

Are bubbles visible in the sight glass?

Add refrigerant through the charging valve on the evaporator feed line

Ensure sight glass is clear at all operating conditions

Record full load performance data on the log sheet

Check if the approach for either vessel increases by more than 2°F above the approach recorded at clean conditions

Consult water treatment specialists for recommended chemicals

Rinse the system thoroughly after cleaning to remove chemicals

Physical Cleaning of Vessel Tubes

Drain the water from the vessel