BUSCH SECO SD 1005 C, Installation And Operating Instructions Manual

Page: 10 / 20

Version with AC-motor:
The vacuum and pressure pump stops and re-
starts after a certain time
The thermal protections switch of the drive
activates due to insufficient cooling of the
vacuum and pressure pump Improve the cooling (increase the distance to
adjacent walls, increase fresh air supply)
The vacuum and pressure pump does not start The drive motor is not supplied with the cor-
rect voltage or is overloaded Supply the drive motor with the correct volt-
age
The drive motor starter overload protection is
too small or trip level is too low Compare the trip level of the drive motor
starter overload protection with the data on
the nameplate, correct if necessary
In case of high ambient temperature: set the
trip level of the drive motor starter overload
protection 5 percent above the nominal drive
motor current
One of the fuses has blown Check the fuses
Version with alternating current motor:
The drive motor capacitor is defective
Repair the drive (Busch service)
The connection cable is too small or too long
causing a voltage drop at the vacuum and
pressure pump Use sufficiently dimensioned cable
The vacuum and pressure 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
and pressure pump by hand
If the vacuum and pressure pump is blocked:
Repair the vacuum and pressure pump (Busch
service)
The drive motor is defective Replace the drive motor (Busch service)
The vacuum and pressure pump is blocked Solid foreign matter has entered the vacuum
and pressure pump Repair the vacuum and pressure pump (Busch
service)
Make sure the suction line is equipped with a
screen
If necessary additionally provide a filter
Corrosion in the vacuum and pressure pump
from remaining condensate Repair the vacuum and pressure pump (Busch
service)
Check the process
Version with three-phase motor:
The vacuum and pressure pump was run in
the wrong direction
Repair the vacuum and pressure pump (Busch
service)
When connecting the vacuum and pressure
pump make sure the vacuum and pressure
pump will run in the correct direction
(
Ú
page 5: Installation)
After shutting down the vacuum and pressure
pump condensate ran into the pump chamber
When the vacuum and pressure pump was re-
started too much condensate was enclosed
between the vanes (35)
Condensate could not be compressed and
thus broke a vane (35)
Repair the vacuum and pressure pump (Busch
service)
Make sure no condensate will enter the
vacuum and pressure pump, if necessary pro-
vide a drip leg and a drain cock
Drain condensate regularly
The vacuum and pressure pump starts, but la-
bours 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
Check the proper connection of the wires
against the connection diagram
Tighten or replace loose connections
Troubleshooting
page 10
SV 1005 C / SD 1005 C / SV 1008 C / SD 1008 C
0870135648