GEV GP 100, Mounting And Operating Instructions, Page: 18 / 43

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GP+GP – Maintenance book Pag.
18 of 43
E.
TROUBLESHOOTING GUIDE
FAULTS CAUSES REMEDY
Pump does not
start or the
thermal device
starts after few Motor is not properly connected
The thermal device has not been
properly adjuested
The Volts do not fit with the motor’s one
Pump is stucked Connect motor correctly
Readjust the thermal device
Replace motor
Replace pump
Pump does not
start easily, vanes
noise and higher
power absorption The rotating sense is uncorrect
The oil temperature is too low, ( less
then 12°C)
Oil is too viscous
Pump has been stopped since long time
Oil remover cartridges are weared
Exhaust piping is clogged Change the rotation direction
Heat the environment and
the oil with a less viscousity one
Use the correct oil
Let pump run with closed suction
untill hot
Replace the oil remover cartridges
Clean all the exhaust piping
Pump does not
reach the stated
Tag vacuum Measuring instrument is damaged or
unsuitable
Leaking from both oil and suction
pipings
Anti-suckback valve on suction does not
work properly
Misfunctioning of the floating valve, of
the oil recovery group or discharge
bulkward
Oil missing in the pump
Shaft seals out of order or uncorrectly
positioned
Poor lubrication due to :
. unsuitable or contaminated oil
. oil filter clogged
. oil pipings clogged
Vacuum line is dirty
Pump is too small Check the measuring technique and
the used instruments
Check and tighten all fittings housed
both on suction pipings and oil
Check and repair the anti-suckback
valve
Check all the components
Fill up pump with oil
Replace the tight rings
Change the oil and in case degass it
Clean the oil lines
Clean the vacuum line
Check out the process details and in
case replace the pump
Lower pumping
speed Suction net filter is clogged
Oil remover cartridges are clogged
Non return valve does not open easily
Suction piping is not tight Clean the net filter. Check if you need
a proper anti-dust filter in suction
Replace the oil remover cartridges
Check and release the spring