BUSCH R5 RE 0016 B, Installation And Operating Instructions Manual

Page: 16 / 24

The vacuum pump or the drive motor is
blocked Make sure the drive motor is disconnected
from the power supply
Remove the fan cover
Try to turn the drive motor with the vacuum
pump by hand
If the vacuum pump is blocked:
Repair the vacuum pump (Busch service)
The drive motor is defective Replace the drive motor
(in order not to compromise the explosion
safety of the vacuum pump the coupling must
be adjusted and measured according to a pre-
cisely defined procedure; therefore the motor
must be mounted by the Busch service only)
The vacuum pump is blocked Solid foreign matter has entered the vacuum
pump Repair the vacuum pump (Busch service)
Make sure the suction line is equipped with a
screen
If necessary additionally provide a filter
Corrosion in the vacuum pump from remain-
ing condensate Repair the vacuum pump (Busch service)
Check the process
Observe the chapter Conveying Condensable
Vapours (
Ú
page 9)
Version with three-phase motor:
Version with DC motor:
The vacuum pump was run in the wrong di-
rection
Repair the vacuum pump (Busch service)
When connecting the vacuum pump make
sure the vacuum pump will run in the correct
direction (
Ú
page 7: Installation)
After shutting down the vacuum pump the
vacuum system exerted underpressure onto
the pump chamber which sucked back exces-
sive oil from the oil separator into the pump
chamber
When the vacuum pump was restarted too
much oil was enclosed between the vanes (i)
Oil could not be compressed and thus broke a
vane (i)
Repair the vacuum pump (Busch service)
Make sure the vacuum system will not exert
underpressure onto the shut-down vacuum
pump, if necessary provide an additional
shut-off valve or non-return valve
After shutting down the vacuum pump con-
densate ran into the pump chamber
When the vacuum pump was restarted too
much condensate was enclosed between the
vanes (i)
Condensate could not be compressed and
thus broke a vane (i)
Repair the vacuum pump (Busch service)
Make sure no condensate will enter the
vacuum pump, if necessary provide a drip leg
and a drain cock
Drain condensate regularly
The drive motor is running, but the vacuum
pump stands still The coupling between the drive motor and
the vacuum pump is defective Replace the coupling element
(in order not to compromise the explosion
safety of the vacuum pump the coupling must
be adjusted and measured according to a pre-
cisely defined procedure; therefore the cou-
pling element must be replaced by the Busch
service only)
The vacuum pump starts, but labours or runs
noisily or rattles
The drive motor draws a too high current
(compare with initial value after commission-
ing)
Loose connection(s) in the drive motor termi-
nal box
Version with three-phase-motor:
Not all drive motor coils are properly con-
nected
The drive motor operates on two phases only
Version with DC-motor:
Carbon brushes are worn
Check the proper connection of the wires
against the connection diagram
Tighten or replace loose connections
Version with DC-motor:
Replace the carbon brushes
Troubleshooting
RE 0016 B / RE 0040 B / RE 0063 B with safety valve, without motor
page 16
0870142823