Schreiber Chillers 1250ACsf User Manual

Page 25

MAINTENANCE INFORMATION

There are no lubrication points on the chiller. All motors have permanent
lubrication in the bearings.

The water that is used in the chilled water circuit has no special requirements,
except that deionized water cannot be used. The water should be clean and some
type of water conditioner can be used. Nothing should be used in the chilled water
circuit that could damage the all copper Heat Exchanger. THIS INCLUDES THE
USE OF DEIONIZED WATER. NO DEIONIZED WATER.

The air cooled condenser should be cleaned on a regular basis, depending on the
environment the chiller is installed in. You can never damage it’s condenser coil
by cleaning it too much.

The water level should be maintained as close to the level as marked on the
water sight glass. You can damage the refrigeration system by the water being
at a low level, it will effect the efficiency of the unit also.

5. Caution: The compressor receivers and water pump could be hot enough to

injure one touching these components.

The chilled water read-out is the discharge water.

Please Note: This is a hermetically sealed compressor. There are no necessary
maintenance requirements. Please read the service bulletin before making any
repairs.

NOTICE ON EXPANSION VALVE

This is a standard Expansion Valve. These valves come from the
factory pre-set. For the proper super heat do not try to adjust the
super heat on this valve unless you call the factory service
department. This valve is one of the most reliable parts. If this valve
needs to be changed out, you do it without losing the R-22 charge.
To do this, turn the receiver off at the liquid line to the expansion
valve. Then pump the system down until you just have two or three
pounds of gauge pressure. Remove the power element and install
replacement power element, open the receivers liquid line valve.
TEST FOR LEAKS and restart the unit. Remember, call the
factory before you do any work on the expansion valve. Never adjust
the super heat. Call factory first. DO NOT reset super heat. Ask
factory first.

1001AC