Trane CenTraVac™ Water-Cooled Chiller CVHF - 300-500 - 360 - 050S / 080S

Compare the readings with the values provided in the general maintenance

Check the oil level in the chiller oil sump using the two sight glasses provided in the oil sump head. When the unit is operating, the oil level should be visible in the lower sight glass

Test appropriate sensors for accuracy

Ensure sensors are properly seated in wells with thermopaste installed

Check evaporator leaving water temperature low temperature cutout setpoint

Condenser high pressure switch check-out

Check adjustment and operation of the inlet guide vane actuator

Sign off on the control circuits inspection

NOTICE: Proper Water Treatment Required! The use of untreated or improperly treated water could result in scaling, erosion, corrosion, algae or slime. Use the services of a qualified water treatment specialist to determine what water treatment, if any, is required. Trane assumes no responsibility for equipment failures which result from untreated or improperly treated water, or saline or brackish water.

Condenser tube fouling is indicated when the approach temperature (the difference between the condensing refrigerant temperature and the leaving condenser water temperature) is higher than predicted.

If the annual condenser tube inspection indicates that the tubes are fouled, two cleaning methods— mechanical and chemical—can be used to rid the tubes of contaminants. Use the mechanical cleaning method to remove sludge and loose material from smooth-bore tubes.

To clean other types of tubes including internally- enhanced types, consult a qualified service organization for recommendations.

Round nylon or brass bristled brush worked in and out of each of the condenser water tubes to loosen the sludge?

Condenser water tubes thoroughly flushed with clean water?

Scale deposits are best removed by chemical means. Be sure to consult any qualified chemical house in the area (one familiar with the local water supply’s chemical mineral content) for a recommended cleaning solution suitable for the job.

NOTICE: Unit Corrosion Damage! Failure to follow instructions below could result in corrosion damage to the unit and tubes. Follow proper procedures when using corrosive chemicals to clean water side of unit. If unsure, it is recommended that the services of a qualified chemical cleaning firm be used.

Contact a qualified service organization to determine when to conduct a complete examination of the unit to discern the condition of the compressor and internal components

Check for evaporator water tube leaks

Check for condenser water tube leaks

Sign off on the yearly chiller maintenance

Perform Annual oil analysis (follow recommendations)

Clean and lubricate oil system as required

Run oil pump and check differential oil pressure

Sign off on the yearly oil system inspection