General Pump HF Owner Manual - Manual (Page 10)

GENERAL PUMP
A member of the Interpump Group
HF SERIES
Page 10
10. START UP AND RUNNING PROCEDURES
10.1 Before start up
Before start up make sure that the following conditions
have been complied with:
1. Suction line should be connected: the pump must
never run dry.
2. Suction line must be perfectly air-tight.
3. Any ON-OFF valve in between the pump and water
source should be open and make sure the water
gets into the pump freely.
4. Set the pressure line in dump mode in order to let
the air in the pump get out easily thus facilitating
the pump priming.
5. Make sure all suction/delivery line connections are
fully tightened.
6. Joint alignment, belt tightening and PTO shaft
inclination tolerances should remain within the
values indicated by the transmission Manufacturer.
7. Make sure the oil level is correct using the dipstick
(position 1, Fig. 7) and the oil sight glass (position 2,
figure 7).
10.2 Starting up
1. When starting the pump up for the first time check
check for proper direction of rotation.
2. Pump and motor/engine must start offload: set the
regulating valve to “zero” or set the pressure line
in dump mode by means of proper dumping devices.
3. During operation check that the rotating speed does
not exceed the rated value.
4. Before putting the pump under pressure let it run for
at least 3 minutes.
5. Before stopping the pump release the pressure from
the system by operating the dump device or by
releasing the regulating valve and reduce RPM to a
minimum (diesel applications).
Note: in case of feeding by a centrifugal pump, make sure
that the plunger pump starts only when the correct
inlet pressure is provided.