28
1
2
6.5 Oil level check
Danger.
Only check the oil level when the screw compres-
sor unit is out of operation and depressurized ! The
pressure reservoir can be under pressure and the
oil hot. Warning : Danger of scalding ! Do not spill oil !
Check for leakage !
Important
Do not mix oils of different specifications.
Check oil level
• The oil level is checked at the oil sight-glass at the
pressure reservoir (fig. 14) after every stop and at
regular intervals.
• The oil should have settled and the air entrapped
should have been dispersed. This procedure may
take up to one hour (depending on the conditions).
• The max. oil level is in the middle of the upper oil le-
vel sight-glass, the min. oil level in the middle of the
lower oil sight glass (fig. 14). If required, top up oil.
See also chapter 8 "Maintenance“.
air-cooled water-cooled
AW
L37S 71 70
L45 72 72
L55 74 73
L75 78 78
Subject to technical revision.
6. Preparations for commissioning
6.6 Sound pressure level
Sound pressure level measured to DIN 45 635 under
full load at a distance of 1 m dB(A):
Figure 14:
1 max.
2min.
Fig. 14
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