90 HyPrecision 50S/60S/75S Operator Manual 808690
5 – Preventive maintenance
Preventive maintenance
5. Add compressed air to increase the pressure in the tank. To reduce pressure in the tank, push on the valve
stem to release air.
6. Repeat this procedure until the pressure is 2.07 bar or 206.84 kPa (30 psi).
7. Install the original valve stem cap.
8. Close the water valve.
9. Turn ON the water to the pump.
Water valve in the closed position
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