Trane CVGF-SVU02B-E4 Operation And Maintenance Manual page 78

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.
78
Periodic
Maintenance
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 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.
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 loosens 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 appreciable
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.
CVGF-SVU02B-E4