BUSCH Seco SG 0008 A, Installation And Operating Instructions Manual

Page: 10 / 20

Seco SG 0008 A
page 10
0870162612 /
190709
Troubleshooting
Problem Possible Cause Remedy
The vacuum pump does not start The drive motor and the motor protection relay
are not properly connected Check electrical connection of the drive motor
and the motor protection relay
The drive motor safety switch is too small or
trip level is too low Adjust the trip level of the motor safety switch
to I
R
= nominal current I
N
The vacuum pump does not reach the usual
volume flow
The drive motor draws a too high current
(compare with initial value after commission-
ing)
The motor protection relay trips
The vacuum pump runs in the wrong direction
Verification and rectification
➔
page 5: Instal-
lation and Commissioning
Partial clogging in the suction or discharge line Remove the clogging
Flame arrestors on the suction side (d) or on
the discharge side (h) are partially clogged WARNING : Flame arrestors must only be
cleaned by personnel that have received spe-
cific training for this purpose either by Busch.
Clean the flame arrestors (d) (h)
In case a filter is installed on the suction con-
nection (c)
The filter on the suction connection (c) is
partially clogged
Clean or replace the inlet air filter
Long suction or discharge line with too small
diameter Use larger diameter
The vanes are worn Replace the vanes
WARNING
Vacuum pump for use in potentially explosive atmospheres.
Risk of explosion in case of operation of faulty equipment!
The vacuum pump must only be operated in faultless condition. A faulty vacuum pump must immediately be removed from service. In case of
faults the cause of which cannot be determined the Busch service must be contacted.
WARNING
Vacuum pump for use in potentially explosive atmospheres.
Risk of explosion in case of operation of the vacuum pump after a thermal overload!
After switching off the vacuum pump by the motor protection relay or the motor safety switch caused by a thermal overload the coupling must
be replaced.
WARNING
Risk of electrical shock, risk of damage to equipment.
Electrical installation work must only be executed by qualified personnel that knows and observes the following regulations:
- IEC 364 or CENELEC HD 384 or DIN VDE 0100, respectively,
- IEC-Report 664 or DIN VDE 0110,
- BGV A2 (VBG 4) or corresponding national accident prevention regulation.
CAUTION
During operation the surface of the vacuum pump may reach temperatures of more than 70 °C.
Risk of burns!
Let the vacuum pump cool down prior to a required contact or wear heat protection gloves.