formations, corrosion anti fonling (plugging) of any
,----
waler-cooled heat exchanger equipment. Disregarding
the possibility that one or more of these conditions
exists may result in increased maintenance and
operation expense, reduced equipment litieand
emergency shutdown. In some cases, what is normally
considered plain drinking water, can contain corrosive
substances that will impact the heat exchanger Me.
Mis strongly recommended that a reputable, local water
treatment concern be engaged to establish the corrosion,
scale-forming and fouling tendency of the cooling
water and take steps necessary to remedy the situation if
a problem does exist. The need for water treatment
may only involve filtration (screening) to remove
debris, sand and/or silt in the cooling water supply.
However, chemical treatment methods may be
necessary in certain instances to inhibit corrosion
aml.hr remove suspended solids to alter the water’s
tendency to form scale deposits, or prevent growth of
microorganisms. The normal maintenance program for
the unit should include periodic cleaning on the tube
side (water side) of the heat exchanger to remove
deposits which enhance fouling and corrosion.
Use of water-glycd mixtures will reduce heat exchange
or performance and result in increased or excessive
,.-. .
operating temperatures. The standard heat exchanges
are sized for water use only.
If overheating or fluid leakage to the water side
develops, remove the end caps and inspect for scale and
corrosion< If present, this is w3w3Nythe source of
trouble. In the base of a closed system, the entire
syste~ cooling tower, cooler inlet and outlet lines
should be inspected and cleaned as necessary.
Except for outright mechanical failures, the solution to
most heat exchanger problems lies at the point of use.
It is the user’s responsibility to provide the proper
quality of water and to keep the exchanger clean. No
heat exchanger made will resist plugging and corrosion
if the basic rules of clean water and regular
maintenance are disregarded.
WARRANTY DOES NOT COVER HEAT
EXCHANGER FAILURE DUE TO PLUGGING
OR CORROSION.
Page 54
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