6 | Optional Graphic Panel |
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6-1 Indicator Lights
PUMP ON (green)
This indicator is lit when the pump runs.
COMPRESSOR ON (green)
This indicator is lit when the compressor operates.
HIGH REFRIGERANT PRESSURE (red)
This indicator lights if the condensing pressure exceeds a safe level. The chiller goes to Idle mode until the high refrigerant pressure cutout resets. The light then goes out and the chiller automatically restarts. Call a qualified refrigeration service technician for service.
LOW REFRIGERANT PRESSURE (red)
This indicator lights if the refrigerant pressure drops below a safe level. The compressor will stop and remain off until the pressure reaches a safe level. The light will go out and the chiller will then resume operation automatically.
LOW WATER FLOW (red), SMC units without pump only
This indicator lights if the flow switch senses chilled water/glycol flow through the evaporator dropping to an unacceptable level. The compressor will stop until the flow switch senses adequate flow and restarts the chiller.
6-2 Switches
POWER
This switch energizes the control circuit; it also turns off the chiller.
SMC Series Chillers | Page 27 |