Trane CenTraVac™ Water-Cooled Chiller CVHG - 670-780 - 621 - 080L / 142L

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

Warning: Equipment Damage! Failure to follow instructions could result in equipment damage

Do NOT use Teflon-based tape or paste on anode; a small amount of liquid sealant (Loctite® 242 or equivalent) may be applied to prevent leakage when installing an anode, but do not apply so much sealant that it prevents the necessary electrical connection between the anode and the waterbox

Anodes inspected for wear within the first several months of service

Enter the observed loss of anode material

Anode has lost 50 percent or more of its original mass

If anode depletion occurs very quickly, was a water treatment specialist consulted?

Upload a photo of the anode after inspection

Sign off on the anode replacement

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.

Follow all instructions in “Waterbox Removal and Installation,” to remove waterbox covers.

Work a round nylon or brass bristled brush (attached to a rod) in and out of each of the condenser water tubes to loosen the sludge.

Thoroughly flush the condenser water tubes 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.

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

Use a non-destructive tube test to inspect the condenser and evaporator tubes

Tube test performed on condenser and evaporator tubes?

It may be desirable to perform tube tests on these components at more frequent intervals depending upon chiller application

This is especially true of critical process equipment

Ask your Sales account manager for a copy of engineering bulletin (CTV-PRB024*-EN) for clarification of the role of eddy current testing in chiller maintenance by providing information about eddy current technology and heat exchanger tubing

Sign off on the tube maintenance