Edwards TCU 40/80

Table 5 - Front panel LED indicators
LED name
FACILITY POWER
FACILITY WATER
CIRCUIT BREAKERS
COMPRESSOR
COOLANT
TEMPERATURE
COOLANT FLOW
COOLANT NORMAL
LEVEL
COOLANT LOW LEVEL
REMOTE RTD
Condition
Green
Red
Green
Red
Green
Red
Green
Red
Green
Red
Green
Red
Green
Amber
Off
Amber
Red
Off
Green
Description
Power phases are normal.
Power phases are reversed or low line voltage.
Water pressure and flow are normal.
Water pressure or flow are not adequate. (See
Specifications on page 14.
Rear panel circuit breakers 2, 3, and 4 are on.
One or more of these breakers is tripped or off.
Compressor is operating normally.
Compressor has stopped operating.
Coolant reservoir temperature is normal.
Coolant temperature is above the operating range.
Coolant flow is normal.
Coolant flow is not adequate.
Coolant level is normal.
Coolant level is over filled.
Coolant level is normal
Coolant level is low.
Coolant level is very low.
Remote RTD not connected.
Remote RTD temperature probe is in use.
Table 6 - Temperature controller
Controls and indicators
Process Value (PV)
Setpoint Value (SP)
Pushbuttons
Remote Mode LED (Aux)
Description
The present temperature of the coolant, as indicated by the internal RTD
or the remote RTD.
The TCU 40/80 regulates to this temperature, as set by the operator.
Used to program the controller.
Indicates mode of operation:
Off indicates local operation.
On indicates remote operation.
12 TCU 40/80 Temperature Control Unit