12 Maintenance and service
Operating manual mzr-11557 Ex
42
Technical data subject to change without prior notice!
Last update: March 2019
12
Maintenance and service
12.1
Micro annular gear pumps
The first maintenance of the micro annular gear pumps has to take place after
4000 hours or after 6 month latest. If wear is low at the first inspection further
maintenance intervals at the same operation conditions can be extended to
6000 hours or to a service interval of 12 month latest.
If there is increased wear at the first inspection the maintenance intervals have
to be adapted according to the wear situation.
In case of maintenance and service please send the micro annular gear pump to
your distributor or HNP Mikrosysteme directly. The address you may find on the
front page of the manual or in section 1.
The micro annular gear pump is sealed. It is prohibited to open or disassemble
the pump. The warranty will expire immediately in such a case.
HNP Mikrosysteme cannot give any warranty for replacing in case of damages
to the pump which are related to faulty operation.
12.2
Metal bellow-type coupling
Maintenance of the standard metal bellow-type coupling is not necessary
according to the enclosed manufacturer’s data when assembled by
HNP Mikrosysteme.
Within the maintenance intervals of the pump the screw tightenining torque
must be checked after 6000 hours. If at the first inspection damage at the
metal bellow-type coupling is found the maintenance intervals have to be
adapted according to the operational data. This check must be part of the
maintenance intervals of the micro annular gear pump.
12.3
Ex-Motor
The explosion proof motor itself is maintenance free. According to the
manufacturer’s instruction the explosion proof motor has to be checked 1-2
times per year regarding cracks and damages. This check must be part of the
maintenance intervals of the micro annular gear pump.