Schreiber Chillers 200ACsf - Manual (Page 26)

MAINTENANCE INFORMATION
Part ll
NOTICE OF 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. This Alco valve is one of
the most reliable parts. If this valve needs to be changed out, 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 there is two or three pounds of gauge pressure. Remove
the power element and install the 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.
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200AC