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4.2
Adjustment of maximum operating pressure
Should either of the following be noted during operation:
• pressure above the maximum limit for the system and safety valve;
• abnormal leaks of liquid;
- stop work, switch the pump off and check that the installation and preliminary procedu
-
res have been completed correctly.
1
Start pump operation.
2
Close the discharge valve with the switch on the control unit
(set to OFF): this delivers product to the unit.
3
Gradually increase the number of revs of the pump until the maximum operating level is reached.
4
Fully close the proportional valve:
• manual proportional valve:
turn the valve’s knob clockwise.
• proportional electric valve:
push the respective switch on the
control unit up.
5
Close all the compensation cocks by turning their knobs clockwise.
6
Adjust the maximum pressure valve by turning its knob clockwise until
the pressure of the valve is about 20% above the unit’s maximum
operating pressure.
