Screw Compressor Central Chiller
Chapter 5: Maintenance
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Water-Cooled
Proper water treatment will greatly reduce cleaning intervals.
Remove dirt in the condenser tubes with a nylon tube brush. Mineral deposits can be removed
by circulating Liquid De-Scaling Solution (Model Number A0502600) through the water side
of the condenser. Follow the directions on the container.
The refrigerant side is sealed and requires no routine maintenance.
5-3 Corrective Maintenance
Evaporator Maintenance
The evaporator(s) may be accessed for back-flushing by removal of the 1 1/2” plug (approx.
51 mm) in the return control nipple and the flow switch in the supply control nipple. If the
suggested piping recommendations have been followed, one circuit of a multiple circuit
chiller may be back-flushed without shutting down the entire system. Check Y-strainer for
any clogging.
Miscellaneous Maintenance
The compressor oil sample should be analyized at least once a year to monitor wear and any
possible contamination.
Caution!
Sample must be taken by qualified refrigeration service technician.
