© 2020 MANKENBERG GmbH
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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
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
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!
Type of maintenance
Work to be performed
Period
1)
Check function
Check seal on the body,
the pipe connection and
the control lines
Check whether function is fulfilled as per Section
1) <Intended use>
Visual inspection
At least 1x per week
At least 1x per month
Grease sliding points
Monitor exposed spring
If installed upstream of
the fitting:
clean strainer
Preventive
maintenance
Grease external sliding points with a corrosion-protec-
tion lubricant
Visual inspection:
if necessary, remove any dirt/corrosion
2)
At least 4x per year
At least 2x per year
According to the manufacturer's instructions
Dismantle fitting, see Section 10 <Troubleshooting
help>.
Visual inspection of diaphragm and functional parts.
Replace all parts of the maintenance set
3)
Depends on the con-
tamination of the me-
dium
At least 1x per year
Check safety valve
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)
Caution danger of crushing: shut down the valve for cleaning purposes!
3)
Request maintenance set and replacement instructions from MANKENBERG.
According to the manufacturer's instructions
At least 1x per year
danger
Summary of Contents for M XTRA RP 840
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