Maintenance
7
Maintenance
For pumps in potentially explosive atmospheres (
→
ATEX
additional manual).
Trained service technicians are available for fitting and
repair work. Submit evidence of conveyed medium on
request (DIN safety data sheet or safety certificate).
7.1
Inspections
The inspection intervals depend on the operational strain
on the pump.
DANGER
Risk of injury due to running pump!
Do not touch the pump when it is running.
Do not carry out any work on the pump when it is running.
WARNING
Risk of injury and poisoning due to hazardous pumped
liquids!
Use personal protective equipment when carrying out any
work on the pump.
1. Check at appropriate intervals:
–
Adherence to the minimum flow rate
–
Normal operating conditions unchanged
–
Alignment of coupling and condition of elastic elements
2. For trouble-free operation, always ensure the following:
–
No dry running
–
No leaks
–
No cavitation
–
Suction side open gate valves
–
Free and clean filters
–
Sufficient pump inlet pressure
–
No unusual running noises or vibrations
–
No parting of magnetic coupling
7.2
Servicing
Operating life of antifriction bearings when operated within
the permissible range: >2 years.
Intermittent operation, high temperatures, low viscosities
and aggressive ambient and process conditions reduce the
service life of antifriction bearings.
Plain bearings are subject to natural wear and tear which
is heavily dependent on the respective operating condi-
tions. It is therefore not possible to make general state-
ments about the operating life.
DANGER
Danger to life and material damage due to magnetic field.
Make sure that personnel with pacemakers do not com-
plete work on the pump.
Secure the work place and if necessary cordon off:
–
Make sure that personnel with pacemakers keep a safe
distance of > 1 m.
–
Make sure that no magnetizable metal parts can be
attracted by the pump's magnetic coupling.
–
Make sure that parts of the magnetic coupling cannot
be attracted by the magnetizable metal parts.
Maintain a safe distance of at least 150 mm from the mag-
netic coupling for magnetically sensitive objects.
DANGER
Risk of injury due to running pump!
Do not touch the pump when it is running.
Do not carry out any work on the pump when it is running.
Before all installation and maintenance work, disconnect
the motor from the mains and secure it against being
switched back on again.
DANGER
Risk of electrocution!
All electrical work must be carried out only by qualified elec-
tricians.
Before all work on the electrical system, disconnect the
motor from the mains and secure against being switched
back on again.
DANGER
Danger to life from rotating parts.
Ensure coupling guard is fitted after work on the pump.
300 092
BA-2018.08.21 EN
SHM
21
