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

Is the evaporator part of a closed circuit?

If the evaporator is part of a closed circuit, it may not accumulate appreciable amounts of scale or sludge.

Has the evaporator been cleaned in the last three years?

Normally, cleaning every three years is sufficient.

Is the evaporator part of an open system, such as air washers?

If yes, periodic inspection and cleaning is recommended.

Sign off on the evaporator maintenance

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

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

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

2. 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

- Shut down the chiller once each year to check the items of Condenser

1. Inspect for fouling and scaling in tubes

2. Check operation of condenser water flow sensing device

3. Factory recommendation to eddy current test tubes every three years;

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

As needed after draining the waterbox, use a 2-1/2 in. (63.5 mm) wrench to remove/install Trane-supplied waterbox anodes

Inspection of anodes for wear within the first several months of the anodes being placed into service

If the observed loss of anode material is small, then the interval between subsequent inspections can be lengthened

Replace the anode and/ or shorten the inspection interval if the anode has lost 50 percent or more of its original mass

If anode depletion occurs very quickly, consult a water treatment specialist to determine if the anode material selected is correct for the application

Sign off on the anode replacement