Trane CVGF500 Installation, Operation & Maintenance Manual page 117

Condenser cleaning
Water available for cooling condensers frequently contains minerals that collect on the
condenser tube walls as carbonate scale. Scale accumulation rate will be increased by
high condensing temperatures and water with a high mineral content.
Cooling towers, when used, may collect dust and form material that will deposit in the
condenser tubes forming sludge.
Scale and sludge formation is indicated by high condensing temperatures and large
differences between condensing and leaving water temperatures.
To maintain maximum efficiency, the condenser must remain free of scale and sludge.
Even a very thin coating on the tube surface may greatly decrease condenser heat
transfer capacity. Two methods for cleaning condenser tubes are mechanical and
chemical.
CAUTION
Proper Water Treatment!
The use of untreated or improperly treated water in a CenTraVac may result in scaling,
erosion, corrosion, algae and or slime conditions. It is recommended that the services
of a qualified water treatment specialist be engaged to determine what water treat-
ment, if any, is required. Trane assumes no responsibility for equipment failures which
result from untreated or improperly treated water, or saline or brackish water.
The mechanical method removes sludge and loose material from the condenser tubes.
Working a round nylon or bristle brush attached to a rod, in and out of the tubes loos-
ens the sludge. After cleaning, flush the tubes with clean water.
The chemical method removes scale deposits. The standard condenser water circuit
consists of copper, steel and cast iron. Any reliable water treatment company will be
able to recommend a cleaning solution for the job.
Note: Trane assumes no responsibility if deterioration of the unit is due to inadequate
water treatment.
Evaporator cleaning
The evaporator is part of a closed water circuit and should not accumulate an appre-
ciable amount of scale or sludge. However, if cleaning should be required, use the
same methods outlined for cleaning the condenser.
Note: Trane assumes no responsibility if deterioration of the unit is due to inadequate
water treatment.
Controls checkout and adjustments
Controls are checked and calibrated during run-in of the unit prior to shipment. Any
adjustments should be made exclusively by authorized Trane service technician.
It is strongly recommended to have proper functioning and setpoints of all controls
checked once per year.
Control settings
For control calibration and check-out, contact an authorized Trane service technician.
Trouble Analysis
See the Diagnostic List for trouble shooting information. The diagnostic must be an-
alyzed, corrections made by qualified personnel and the latching diagnostic reset be-
CVGF-SVX03B-EN
Periodic Maintenance
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