General Pump VF Owner Manual - Manual (Page 13)

GENERAL PUMP
A member of the Interpump Group
VF SERIES
In case the pump has not run for a long period
of time, verify the correct operation of the
suction and delivery valves.
10.2 Start-up
1. When starting the pump for the first time, check for
the correct direction of rotation.
2. The pump must be started off-load.
3. Verify correct feeding pressure.
4. During operation check that the rotating speed does
not exceed the rated value.
5. Before putting the pump under pressure let it run for
at least 3 minutes.
6. Before stopping the pump, release the pressure by
acting on the adjustment valve or on any discharging
device, and reduce RPM (diesel applications).
10.3 Seal Packing Cooling Circuit
During operation, a certain amount of water coming from
the seal packing cooling circuit is discharged from orifice
4 (see fig. 15). The draining of this circuit must be sent
back to the suction line before the booster pump (fig. 15),
or in an appropriate tank.
11. PREVENTIVE MAINTENANCE
To guarantee pump reliability and efficiency, respect the
maintenance intervals as indicated in the table in fig. 16.
PREVENTIVE MAINTENANCE
EVERY 500 HOURS EVERY 1000 HOURS
Check oil level Change oil
Check / Replace:
• Valves
• Valve seats
• Valve springs
Check / Replace:
• H.P packings
• L.P. packings
12. STOPPING THE PUMP FOR LONG PERIODS
12.1 Inactivity for Long Periods
If the pump is started up for the first time after a
long period from the shipment date, before start-
ing operation check the oil level, check the
valves as indicated in Chapter 10, and therefore
follow the start-up procedures described.
12.2 Filling the Pump With an Anti-Corrosion
Emulsion or Anti-freeze Solution by Using an External
Diaphragm Pump as in the Layout Shown in
Paragraph 9.6, fig. 6
a) Close the filter drain, if open.
b) Be sure that the connecting pipe is clean, spread with
grease and connect it to the high pressure outlet port.
c) Fasten the suction hose to the diaphragm pump.
Open the pump suction and fit hose between it and
the diaphragm pump.
d) Fill the container with the solution/emulsion.
e) Put the free extremities of the suction hose and the
high pressure outlet hose inside the container.
f) Start up the diaphragm pump
g) Pump the emulsion until it comes out of the high
pressure outlet hose.
h) Continue pumping for at least another minute; if
needed, the emulsion can re reinforced by adding for
example Shell Donax.
i) Stop the pump, remove the hose from the suction
connection and close it with a plug.
j) Remove the hose from the high pressure outlet port.
Clean, grease and plug both connections and the
hoses.
12.3 Hoses
a) Before greasing and protecting the hoses according to
their previously described procedure, dry the connec-
tions using compressed air.
b) Cover with polyethylene.
c) Do not wrap them too tightly; be sure there is no
folding.
Page 13
Ref 300662 Rev.C
06-12