Sterlco S Series Central Chilling Stations - Manual (Page 65)

SCW Series Central Chilling Stations Page 65 of 77
9-3 Evaporator Maintenance
The evaporator(s) may be accessed for back-flushing by removal
of the 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.
9-4 Pump Motor Seal
Pump seals require water for lubrication, so the pump(s) must
never be run dry. Always fill the tank before attempting to operate
the pump(s). Seal failures usually follow a period of dry operation
of the pump.
9-5 Makeup Valve
Periodically inspect the water makeup valve assembly for proper
operation. If the valve no longer shuts off completely or reliably,
replace it. The plastic ball float should be buoyant for proper
operation.
9-6 Recommended Pump Tank Spare Parts
Part no. Part description Quantity
A0550190 Pressure gauge 1 per pump
A0102396 Float valve, 1” (approx. 25 mm)
A0069538 Plastic ball float, 6” (approx. 152 mm)
A0102394 Float rod, 10” (25 cm)
1 per tank
- Call Sterling Parts - Pump seal and casing gasket 1 per pump
Check your Customer Information Packet for a complete list of
spare parts and part numbers for your SCW Series chilling station.