Operation
Operating Range
This unit has been designed to operate within the temperature range of -40EC to +80EC and
should not be operated outside of this range. HFE 7500 must be used as a process fluid in this
unit.
Start-Up
Before Start-Up, perform electrical and fluid connections as directed in the Installation section of
this manual.
1. Inspect the unit inside and out to be sure that there is no fluid, oil or refrigerant leaks.
2. Do not attempt to operate the unit unless the system appears secure and dry.
3. All cable connections must be in place and secure.
4. Ensure that the proper power (voltage, breaker, and phase) is applied.
5. Turn the SET/OFF/ON switch on the local panel to the OFF position.
6. Fill the reservoir with HFE 7500.
7. Close the Main Breaker. Turn the SET/OFF/ON switch to the SET position.
8. No warning or alarm lights should be lit.
9. Jog the pump by placing the SET/OFF/ON switch in the ON position for 2-3 seconds.
This step will need to be repeated seven or eight times. If there is difficulty priming the
pump, call Lydall service at (603) 539-5005 for assistance.
10. Once the pump is primed, the pressure relief cap on the reservoir must be tightened and
the sanitary reservoir cap secured.
11. Turn the SET/OFF/ON switch to the SET position.
12. Set the Set-Value (SV) to a value higher than the Process-Value (PV) to open the
modulating valve.
13. Put the SET/OFF/ON switch in the ON position. The unit should begin operation.
To run the unit without the software running, set the Station Number (Stno on the PYX Controller
Parameters, in the Control/Monitoring section of this manual) to 15. Turn the unit off, set the
ON/OFF/SET switch to the ON position, cycle the breaker and in approximately 10 seconds, the
unit will start.
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