17
FORM CIM 0203
Cleaning
Solution
Pump
Heat
Exchanger
can be considered for cleaning. However, there are
several other commercially available environmen-
tally safe products on the market that will do an ex-
cellent job. Contact your local wholesaler for avail-
ability. Follow all safety guidelines published by the
cleaner manufacturer.
There is a safety concern whenever using any chemi-
cal cleaner at elevated temperatures. The cleaner manu-
facturers recommend using the cleaners at 120°F or
lower. Since the heat exchanger might be in operation
just prior to the cleaning, it should be cooled to lower
than the 120°F threshold. Due to the ability of the heat
exchangers mass to hold heat, this may take a period
of time. If possible, circulate cool water through the
unit to help dissipate some of the heat.
Check each field installed component to ensure the
chemical cleaner will not damage them when the
cleaner is circulated. For example, the structural
makeup of the strainer may not stand up to the chemi-
cal detergent and rapidly deteriorate or fail to func-
tion after cleaning. If there is a possibility of this
happening, use an alternative cleaner that all com-
ponents will withstand or create another method of
circulating the cleaner that would isolate the com-
ponent in question from the cleaner. While cleaning
the heat exchanger, it may also be a good idea to
check and clean the strainer as well.
NOTE: Do not chemically clean a refriger-
ant circuit.
1. Record performance values (Ref. following
charts). Turn off the fluid source.
2. Cool the heat exchanger, if above 120°F.
3. Close the valves to and from the fluid circuit
loop.
4. Open the drain valve and drain all fluid from
the heat exchanger.
5. Back flush the heat exchanger to remove any
loose particles.
6. Attach pump and hoses as illustrated below,
making sure all fittings and connections are
secure.
7. Check all valving to make sure valves to sys-
tem are closed and valves for cleaning loop
are open.
8. Calculate the total gallons volume of the heat
exchanger and the piping using the following
charts:
NOMINAL STD. STEEL PIPE
TYPE L
PIPE
VOLUME
COPPER TUBE
SIZE
GAL./FT.
VOLUME GAL./FT.
1/2"
.0157
.0121
5/8"
–––
.0181
3/4”
.0277
.0251
1"
.0449
.0429
1-1/4"
.0779
.0653
1-1/2"
.1060
.0924
2"
.1740
.1610
2-1/2"
.2490
.2480
UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . _____
Gallons
Pipe ( ")_____ Gallons/ft x _____ ft =_____ Gallons
Pipe ( ")_____ Gallons/ft x _____ ft =_____ Gallons
Pipe ( ")_____ Gallons/ft x _____ ft =_____ Gallons
TOTAL = _____ Gallons
Figure 19:
Cleaning Process Diagram
0005CA
Summary of Contents for 4CA1901
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