Installation Manual Series CF (excluding encapsulated screw compressors) 23042013 Rev. A / May 2007 23 of 60
5 Preparation prior to
start operation
The equipment shall be set up on level ground
and as far as possible from sources of heat and
dust.
If an inclined position of portable compressors
cannot be avoided, care must be taken that the
oil supply is ensured.
5.1 Filling up oil
Prior to initial start-up and after longer periods of
standstill (about 2 months), the compressor shall
be filled up with oil through the intake tube.
CF75/CF90 ~ 0.5 l
CF128/CF180 ~ 1.0 l
CF246 ~ 2.0 l
When filling, it must absolutely be ensured that
the whole oil system, inclusive of oil cooler, is
filled.
The oil level in the oil reservoir must be checked.
The oil must have the prescribed
level.
5.2 Checking the direction of
rotation
The direction of rotation of the driving motor must
correspond with the rotation direction arrow on
the compressor. Direction of rotation should be
controlled in an uncoupled situation.
6 Maintenance
Checking the operation conditions at regular in-
tervals and servicing all elements of the com-
pressor system correctly and on time are the
prerequisites for trouble-free operation and a
long service life of the machine.
As a matter of principle, the maintenance of the
compressor system is within the responsibility of
the operating company who shall determine the
time intervals for maintenance work taking into
account the stipulations of the system manufac-
turer and the particular operating conditions pre-
vailing on location (air properties, cooling water
properties, ambient temperature).
The following information shall be used as refer-
ence:
The oil level shall be checked at regular in-
tervals. Replenish with the same specification
of oil.
The first oil change shall be made after
approx. 500 hours of operation.
(Observe the regulations of the oil manufac-
turer)
Further oil changes shall be made dependent
upon load of compressor (short time opera-
tion, high final temperatures etc.), or after one
year at the latest.
In either case instructions of oil manufacturer
has to be observed.
It is essential to observe that the whole oil
system (inclusive of oil cooler) is drained dur-
ing oil change.
Afterwards it has to be observed that oil sys-
tem (inclusive of oil cooler) is filled com-
pletely.
The bearings of the compressor stage have
to be replaced after an operating time of
approx. 20.000 – 50.000 dependent upon
load of operating conditions.
It is recommended also to continually monitor
the vibrations of bearings.
It is recommended to have maintenance of
compressor stages carried out by GHH
RAND authorized personnel only.
Opening of the compressor stage by agency
staff (non-authorized personnel) voids all
warranty claims.
Maintenance of compressor unit installed
components and additional equipment as-
semblies of other manufacturers have to be
performed according to their instructions.
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