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6.0 Operation
T-BA/ET-1250-0-GB-
10
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11
15
6.5 Flushing after excess intake
Proceed as follows after excess intake (liquid or
sludge has entered the machine):
•
Unscrew the plug in the intake socket (disassem-
ble possibly attached additional lubrication pipe).
•
Open vehicle tank so that the machine can be ope-
rated without producing a vacuum or pressure.
•
Switch on machine and at slightly reduced speed
take into the machine about ½ litre diesel-oil mix-
ture through the bores in the intake socket.
•
Switch off machine, screw in plug and pre-grease
as specified in Chapter 5.4 before restarting the
machine.
Intermediate settings of the change-over
four-way cock are not permitted during
the flushing procedure. The flushed out
dirt could partly return to the intake side.
6.6 Troubleshooting
Gardner Denver rotary compressors and compressor
vacuum pumps, are noted for the low rate of wear of
the rotary slide valves during normal use. If a fault
should arise, the summary below provides you with
the possibility of being able to determine the cause
and rectify the fault.
Defect
Possible cause
Rectification
Capacity of the compressor/vacuum pump
decreases
•
Vacuum filter or combination air filter
fouled
•
Leaky intake pipe
•
Leaky fittings
•
Speed too low
•
Premature wear of the rotary slide valve;
fouling (water, dirt, …) may have entered
the machine (e.g. when the machine has
experienced excess intake).
•
Clean the filter
•
Find and seal leaks
•
Replace fittings
•
Maintain speed range
•
Replace rotary slide valve or have
machine overhauled in an authorized
workshop
Unusual noise
•
Machine is poorly aligned
•
Bearing worn out
•
Lack of lube oil
•
Unsuitable lube oil
•
Rotary slide valves knock due to worn
width
•
Housing bore has grooves or undulations
due to dirt intake
•
Wrong speed
•
Changed pressure
•
Changed vacuum
•
Align machine precisely
•
Have bearings replaced
•
Top up oil, clean oil tank and intake
screen
•
Fill with oil according to lube oil table
•
Replace rotary slide valve
•
Have housing bore re-turned and honed
in authorized workshop. With
considerably fouled intake filter, fit
microfilter.
•
Maintain speed limits
•
Maintain nominal pressure
•
Maintain nominal vacuum / check exhaust
system and clean where necessary.