Filter
Top Products
Cleaning the Brazed Plate Evaporator
Minerals and other contaminants produce deposits, scales, slime or algae on the heat
transfer surfaces exposed to water. Fouled surfaces could result in decreased cooling
capacity. Implement a water treatment program to slow the fouling.
CAUTION: Hot Surfaces
Always protect yourself from hot surfaces when working on the chiller, espe-
cially when working on or around the compressor and condenser. These
devices can reach over 160°F {71°C}. Allow these devices to cool before
performing any maintenance or troubleshooting.
Water quality should be maintained at a pH level of 7.4, but not less than 6.0 for
proper heat exchanger life.
To clean the brazed plate adapter:
1 Prepare a 5% solution of Phosphoric acid or Oxalic acid and water. Do not
heat the acid solution.
2 Disconnect and/or lockout main power to the chiller.
3 Shut the “To” and “From Process” valves (factory optional) and the drain
reservoir. See Installation section entitled, Drain Connection.
4 Remove the chiller’s side panels.
5 Disconnect the pump from the heat exchanger. Install a cap in the opening of
the heat exchanger where the pump was connected.
Maintenance l 5-5
NOTE: These connections
may vary depending on the
model you have purchased.
Be sure to see the labeling on
your particular unit.
✐
5
Maintenance
From Process inlet
To Process outlet
Fill/drain port
Water level gauge
(continued)