Pump Priming
Purpose: All fluid is removed from the pump head prior to shipment from Haskris. When starting the
pump, it needs to be filled with fluid. This process is called priming the pump.
When the reservoir is full, the pump suction line is “flooded”. In some cases, this flooded suction will
automatically prime the pump. When the heat exchanger is turned ON, the pump will run. If the
controller display shows the pump generating pressure, then the pump is primed.
If the pump pressure gauge shows a low pressure <10 psi, then the pump did not automatically
prime. Follow the procedure below.
1. Identify the priming plug on the face of the pump head
2. Use a wrench to loosen the priming plug slightly. The plug should remain threaded into the
port, but air and liquid should be able to escape.
3. Allow air and a small amount of fluid to escape
4. Tighten the priming plug
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