11
4
Maintenance/Service
4.1
Maintenance intervals
Important!!
In case of compressor units with V-belt drive, re-tension the
V-belts and the quick-lock taper bushes of the V-belt pulleys and the fastening screws of the
discharge silencer after the first two hours of operation.
INSPECTION DURING OPERATION:
A:
The oil pressure must not drop below the minimum value of 0.3 bar, (normally 1-3
bar). When outside temperature is low it may take a few seconds before the oil
pressure is visible.
B:
Check the air filter indicator.
If the red mark is visible, the air intake filter is soiled and poses a risk of overheating
and damages.
C:
The safety valve must open at maximum air pressure.
This valve must NOT be used as blow-off valve. To prevent overheating in the
enclosure the valve at the silo tank must blow off before the compressor valve does.
(blow-off pressure 2.5 bar)
D:
Pay attention to any unusual sounds or peculiarities near the installation.
WEEKLY INSPECTION:
ONLY CARRY OUT WHEN INSTALLATION IS COOL AND AT A STANDSTILL
WITH THE POWER CORD DISCONNECTED OR THE MAIN SWITCH OFF
A:
Check the level of lubricating oil weekly.
To achieve longevity of the compressor it is important the oil level remains between
the indicated marks on the dip-stick (do not overfill).
B:
Check the air intake filter at regular intervals. Clean or replace the air filter if
necessary.
* Please note that the air filter is reinserted in the same position (paying attention to
the front and back of the element). Also check the functioning of the air indicator.
C:
It is important to check the airflow and cleanliness of the fan louvres to prevent
overheating of the compressor.
