Gardner Denver RFL Series, Owner'S Manual

Page: 25 / 36

RFL-7-500 Page 24
Fault Possible cause Elimination
Compressed air temperature too high
•
Final pressure too high
•
Adhere to nominal pressure
•
Exhaust silencer clogged
•
Replace exhaust silencer
•
Four-way changeover valve in
incorrect position
•
Put four-way changeover valve
in correct position
•
Poor cooling
•
Check grilles and vents for any
blockages and remove if
necessary
•
Valve plate in non-return valve
•
Clean non-return valve
•
Vacuum intake filter clogged
•
Clean vacuum intake filter
•
Vacuum too low
•
Adhere to nominal vacuum
Operating pressure or operating vacuum
is not reached
•
Manometer or vacuum meter
gives incorrect reading
•
Replace manometer or vacuum
meter
•
Drive belts slip
•
Check belt tension and tighten if
necessary
•
Four-way changeover valve in
incorrect position
•
Turn four-way changeover valve
in correct position
•
Condensate drain is open
•
Close condensate drain
Mud or liquid has got into the machine
•
Excess suction into vehicle
•
Flush with diesel while running
at lowest permissible rotation
speed and without pressure or
vacuum – Then add lubricating
oil (see
sections 7.5 & 6.2 )
Power requirement too high
•
Rotation speed too high
•
Adhere to rotation speed limits
•
Discharge pressure too high
•
Adhere to nominal pressure –
activate/check safety valve
•
Manometer gives incorrect
reading
•
Replace manometer
•
Exhaust silencer blocked
•
Replace exhaust silencer
Lack of lubricating oil although oil tank has
sufficient amount of oil
•
Suction filter in oil tank blocked
•
Clean oil tank and suction filter
Safety valve blows off
•
Closed valves in pressure line
•
Open valves
•
Clogged pressure system
•
Eliminate blockage
•
Clogged exhaust silencer
•
Replace exhaust silencer
• •
Ventilating valves activates
•
Closed valves in suction line
•
Open valves
•
Suction filter blocked
•
Clean suction filter
• •
Compressed air blows from shaft end and
oil escapes
•
Seals are damaged
•
Replace radial shaft seal rings
in cover of damaged cover
Smell of rubber (with V-Belt drive)
•
V-Belts slip due to insufficient
belt tension
•
Check belt tension and tighten if
necessary
•
Final pressure too high
•
Adhere to nominal pressure
Shifting of V-Belts
•
Low belt tension
•
Check belt tension and tighten if
necessary
•
Worn V-Belts
•
Replace and install new V-Belts
•
Pulley out of alignment
•
Align pulleys
•
Worn belt pulleys
•
Replace pulleys
If the problem is not solved (or not fully solved) by the above actions, please contact our service department.
Only restart the machine after it is absolutely clear that the fault has been resolved completely.