GEA Grasso 5 Installation And Maintenance Instructions Manual page 28

INSTALLATION AND PREPARATION FOR USE
PREPARATIONS FOR USE
Fig.13:
Re-adjustment procedure:
i.
ii.
iii.
iv.
v.
vi.
3
4
28
Oil control pressure regulator (B), Pre-lubrication valve (P)
Caution!
Oil charge valve (P) for lubrication circuit. this connection to be used
for pre-lubrication of the oil circuit
Run the compressor for 15 minutes until the crankcase oil is at its stable
operating temperature [Toil] of 50
1) The lubricating oil pressure difference (A)
2) The control oil pressure difference (B)
After the initial run the oil pressure differences should be slightly higher.
Determine the lubricating oil pressure difference (difference between the
pressure gauges of the oil and suction or [dOil]).
Determine the control oil pressure difference (difference between the
pressure gauges of oil pump discharge
Remove the plug of both oil pressure regulators if the pressures need to be
re-adjusted.
Turn the slotted pin with a screwdriver clockwise or counter clockwise for a
higher or lower oil pressure respectively, until the required control &
lubricating oil pressure differences have been achieved
Replace both plugs.
Hint!
If the valve lifting fails, check the control oil pressure regulator!
To be measured by means of a special control oil pressure gauge to be connected on the oil
pump.
Re-adjusting one regulator will affect the other one, so be sure that both regulators are
properly (re-)adjusted.
o
C and check:
3
and suction.
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07.04.2021