O R Wa T E R- C O O L E D C O N D E N S E R - Conair PCW-1.5 User Manual

In
Out
Out
In
Drain
i
NOTE: These connections
may vary depending on the
model you have purchased.
Be sure to see the labeling on
your particular unit.
5 - 8 l M a i n t e n a n c e
C l e a n i n g t h e B r a z e d P l a t e E va p o r a t o r

o r Wa t e r- C o o l e d C o n d e n s e r

Minerals and other contaminant's produce deposits, scales, slime, or algae on the heat
transfer surfaces exposed to water. Fouled surfaces result in decreased cooling capaci-
ty. Implement a water treatment program to slow the fouling.
CAUTION: Hot Surfaces
Always protect yourself from hot surfaces when working on the Portable
chiller, especially when working on or around the compressor and condens-
er. These devices can reach up to 160
before performing any maintenance or troubleshooting.
Water quality should be maintained at a pH of 7.4, but not less than 6.0 for proper
heat
exchanger life.
To clean:
1
Prepare a 5% solution of Phosphoric acid or Oxalic acid and water. Do not
heat the acid solution.
2
Shut the optional To and From Process valve and Drain Reservoir.
3
Disconnect the pump from the heat exchanger. Install a cap in the opening of
the heat exchanger where the pump was connected.
4
Remove RTD from bottom of evaporator.
5
Connect 1/2-inch tubing to the 1/2-inch connections of the heat exchanger.
SEE below to install customer supplied chemical pump and solution fitted to HTX.
5b
Close OFF condenser in and out and remove 1/2 inch HTX Plug to drain.
Connect as shown below and Back Flush.
6
Back-flush the solution through the heat exchanger and the chiller.
7
Flush the heat exchanger and the chiller piping with fresh water after cleaning.
8
Reconnect the chiller pump to the heat exchanger. Remove the cap in the heat
Heat
Exchanger
1/2 inch
plugs
°
F {71
1/2 inch connection on
outside of chiller cabinet
Valve
Fluid circuit
Pump
To Process
connection
°
C}. Allow these devices to cool
exchanger and reconnect the
hose from the pump.
Acid solution