Conair Portable Chillers Series 1Water-Cooled (W1) and Air-Cooled Models (A1) withTIC Control

Minerals and other contaminants produce deposits, scales, slime, or algae on the heat transfer surfaces exposed to water. Fouled surfaces 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 Portable Chiller, especially when working on or around the compressor and con- denser. These devices can reach up to 160 °F (71 °C). Allow these devices to cool before per- forming any maintenance or troubleshooting.

Water quality should be maintained at a pH of 7.4, but not less that 6.0 for proper heat exchanger life.

To clean:

1 Prepare a 5% solution of Phosphoric acid

or Oxalic acid. Do not heat the acid solution.

CLEANING THE

EVAPORATOR OR

WATER-COOLED

CONDENSER

2	Shut the From Process valve.
3	Disconnect the pump from the heat exchanger.
	Install a cap in the opening of the heat exchanger where
	the pump was connected.
4	Connect 1/2-inch tubing to the 1/2-inch
	connections of the heat exchanger.
5	Back-flush the solution through the
	heat exchanger and the chiller.
6	Flush the heat exchanger and the chiller
	piping with fresh water after cleaning.
7	Reconnect the chiller pump to the
	heat exchanger. Remove the cap in the heat exchanger
	and reconnect the hose from the pump.
			1/2 inch connection on
		Heat
		Exchanger	outside of chiller cabinet

Fluid circuit

Acid solution

To Process connection

Out

In

Out

In

UGH016/0500 Series 1 Portable Chillers, TIC Control MAINTENANCE 5-7