Edwards TCU 40/80 - Page 28

6.5 Remote set-point
To use the remote set-point, wire the J72J2 mating connector as illustrated on page 56.
24vac must be applied to pins 3 and 4.
The AUX LED on the temperature controller will illuminate indicating remote setpoint enable mode as
soon as the mating connector is installed.
6.6 Flow rate adjustment
Caution
Do not exceed coolant pressure of 100 psi.
Exceeding the coolant pressure may result in damage to
the pump.
The Fluorinert flow rate of the TCU 40/80 is factory set to provide approximately 3 gpm at 60 psig/20°C
for a unit operating at 208vac/3-ph/60Hz. If the flow rate requires adjustment to accommodate the
process equipment suppliers recommendations, follow the steps below. The flow rate may be measured
using a flow meter external to the TCU 40/80.
1. Open the left side access door.
2. Peel back the insulation covering the by-pass valve. Refer to Figure 1 on page 6.
3. The valve handle can be found in the plastic bag secured to the pump. Reduce the flow by turning the
valve stem clockwise. To increase the flow, turn the stem counter clockwise. The valve is a 1/4 turn
valve.
4. Once the required flow rate has been achieved, return the valve handle to the bag for future use, glue
the insulation back in place, and secure the access door.
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TCU40/80 Temperature Control Unit