Maintenance information – Schreiber Chillers 1000AC 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.

The air cooled condenser should be cleaned on a regular basis, depending on the
environment the chiller is installed in.

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 only affect the efficiency of the unit. Suggest you flush out the water
reservoir, should the water become rusty or some other foreign matter.

Caution: The compressor receivers and water pump could be hot enough to injure
one touching these components.

Temperature read out on the controller is the discharge chilled water temperature
and the chilled water as it is returned to the chiller.

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

NOTICE ON EXPANSION VALVE

This is a standard Alco Expansion Valve, Model #TLCE (size) HW.
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. The Alco 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.

1000ac.doc