Maintenance information – Schreiber Chillers 2000ACsf 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 cannot damage the refrigeration system by the water being at a
low level, it will only effect 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.

6. The solid-state controller reads discharge & return temperature.

7 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.

2000AC.doc