!DANGER
Improper electrical connections will damage the unit and cause serious operator injury or death! Compressor damage will occur if compressors are run backwards.
Bring properly sized power leads and ground from a fused disconnect (installed by your electrician) to the unit. Provide external overcurrent protection to the unit, using circuit breakers or fuses. If you use fuses, make sure that they are
Important!
1.Electrical connections must comply with all applicable electrical codes.
2.The chiller must be grounded in accordance with NEC Article 250.
3.Voltage must be within plus or minus ten percent (±10%) of the nameplate rating.
4.Make sure your installer provides external protection.
Check Compressor Rotation Before Starting Unit!
1.Connect a phase monitor and phase incoming power ABC.
2.Connect a refrigerant gauge to the suction service valve. Fully front seat the service valve and open one full turn.
3.Bump start the compressor by switching off then on quickly 0.5 to 1 second. If the rotation is correct, the suction pressure will drop immediately. A rise in pressure will indicate the wrong rotation. If this occurs, change over two electrical phases of the incoming power supply (do not change phase at the compressor starter).
Check the electrical wiring schematic
provided in your Customer Information packet
for additional information.
SCW Series Central Chilling Stations | Page 21 of 77 |
