21
Malfunction, cause and remedy
21.6
Malfunctions in the central lubrication system
300
BiG Pack 1270
Original Operating Instructions 150000747_02_en
Malfunction:
Blockage in the central lubrication system
Possible cause
Remedy
Blockage at pump, distributors
or bearing points
Proceed as follows to identify the blockage:
1) Pump
Loosen the pump outlet and activate the pump.
If the pump is working properly, connect the pump outlet
again.
ð
The pump works properly.
2) Main distributor
Let the pump work until the next blockage or until the next
time the pressure rises inadmissibly.
Pressure must be present.
Loosen the threaded input connection on the main
distributor.
ð
If the lubricant does not leak out of the supply line, the
supply line is blocked and must be replaced.
ð
If lubricant leaks, check the outlet screw connection on
the main distributor.
Æ
Tighten the threaded input connection.
Loosen all outlet screw connections on the main distributor.
ð
The main distributor blocks and must be replaced if no
lubricant leaks out of it.
ð
The supply line from where the lubricant leaks leads to
the subdistributor which must be checked next.
Tighten all outlet screw connections.
3) Subdistributor
Loosen the threaded input connection on the subdistributor.
ð
If the lubricant does not leak out of the supply line, the
supply line is blocked and must be replaced.
ð
If lubricant leaks, check the outlet screw connections on
the subdistributor.
Tighten the threaded input connection.
Loosen the outlet screw connection on the subdistributor.
ð
The main distributor blocks and must replaced if no
lubricant leaks out of it.
ð
The supply line from where the lubricant leaks leads to
the blocked bearing point.
ð
Remove the blockage on the bearing.
ð
Tighten all outlet screw connections.