Maintenance - Mankenberg NV 93 Betriebsanleitung

9 Maintenance

The automatic function of the fitting requires maintenance to ensure that it continues to operate
perfectly. It is important for maintenance work to take place in a planned manner at periodic
intervals.
The maintenance plan in Table 1 is a recommendation by the manufacturer MANKENBERG, which
should be supplemented by practical experience gained by the user under the prevailing operating
conditions.
MANKENBERG shall assume no liability resulting from improper maintenance and/or repairs.
Table 1: Sample plan for maintenance work
Type of maintenance
Check function
Check seals on the body
and the pipe connection
Check free movement of
the lever system
If installed upstream of
the fitting:
clean strainer
Preventive maintenance
1) See comment at the beginning of this section: The time intervals are guides which should be adapted
to match the prevailing operating conditions, the properties of the medium in the system and the user's
experience.
2) Request maintenance set and replacement instructions from MANKENBERG
During maintenance work (apart from visual inspections) the relevant recommendations
and warning notes in Section 10 <Troubleshooting help> should be observed.
Failure to observe this warning may mean danger to life and limb and may cause
danger
damage to the pipeline system and to the fitting.
When a fitting that has previously been dismantled is being put back into service, the fitting should be
checked for proper sealing capacity and function as well as correct adjustment of the adjusting and
functional components!
Work to be performed
Check whether function is fulfilled as per section
1) <Intended use>
Visual inspection
Check function
According to the manufacturer's instructions
Dismantle fitting, see Section 9.Visual inspection of
the functional parts.
Replace all parts of the maintenance set 2)
- 8 -
© 2020 MANKENBERG GmbH
Period 1)
at least 1x per week
at least 1x per month
Depends on the properties
of the medium
Depends on the
contamination of the
medium
at least 1x per year