Richter MNK Series - Manual (Page 17)

Series MNK 200-150-315
Page 17
9230-053-en Revision 12
TM 8195 Edition 03/2011
7.3 Cleaning
Care must be taken when cleaning the pump to
ensure that it is not exposed to a strong water jet.
The ingress of water into the bearing pedestal will
substantially impair ball bearing lubrication.
7.4 Stand-by pumps
If a pump is on stand-by, it is to be started up from
time to time. Regularly turn the shaft by hand in the
direction of rotation.
This operation is to be performed more often for
pumps which are exposed to very strong vibrations
from the plant.
When dismantling the pump from the plant, drain it,
thoroughly clean it, seal with flange covers and store
in accordance with the instructions.
7.5 Notes on dismantling
All repair and maintenance work is to be performed
by skilled staff using appropriate tools and original
spare parts.
Is the necessary documentation available?
Has the pump been shut down, drained and
flushed in accordance with the regulations?
See also Section 6.3.
If no new assembly is performed immediately after
dismantling, the plastic and ceramic components in
particular must be stored carefully.
7.5.1 Protective clothing
Even if the pump has been properly
evacuated and flushed, residue of the
medium may still remain in the pump, e.g.
between sealing surfaces or in the bearing seats or in
the can or the can insert.
Plastic components may absorb medium which
gradually emerges from the material after flushing.
Proper protective clothing is to be worn.
Protective clothing is also to be worn even if only the
bearing pedestal is to be removed. Medium may
penetrated the lantern chamber through the can.
7.5.2 Magnetic fields
Caution! Strong magnetic fields
Risk during dismantling and in the vicinity of
magnetic drives as single parts.
Remove loose parts and other magnetisable metals
from the work bench. They could otherwise be
attracted: Risk of accident
!
Place any tools needed at a safe distance.
Keep
electronic equipment and measuring
instruments at a distance. In cases of doubt consult
the equipment manufacturer.
Hold magnetic drives as single parts firmly or secure.
Otherwise they could be attracted, for example, by a
vice: Risk of accident!
People with an artificial pacemaker
Keep torso at a minimum distance of
500 mm.
For safety's sake, a distance of 150 mm should be
observed for watches, electric data carriers, data
carriers with magnetic strips etc.
7.6 Dismantling
There are three possibilities for dismantling:
1. Dismantling the complete pump from the plant.
2. Dismantling the complete slide-in unit as the pump
housing can remain in the plant connected to the
piping.
3. Dismantling the complete drive unit from the plant.
The pump does not need to be drained.
Dismantling of the complete pump is described here.
For the design and individual parts of the pump, see
the exploded drawing in Section 9 and the sectional
drawing in Section 10.
If the coupling installed is a spacer-type coupling, the
motor can also remain in the plant.
Undo support bracket 183 from the base plate.
Undo housing screws 901/3, 552/3
Remove entire slide-in unit.
If the housing 100 remains in the plant, leave the
housing gasket 401 in the centering to protect the
housing sealing surface.
Caution!
When pulling out the slide-in unit, this component
must be secured against falling.
The integrated crane hook lug on the lantern can be
used for this purpose.
Or use the optionally available sliding and support
pedestal. See assembly aids in Section 11.4.
Dismantling of the complete pump is described here.
For the design and individual parts of the pump, see
the exploded drawing in Section 9 and the sectional
drawing in Section 10.
If the coupling installed is a spacer-type coupling, the
motor can also remain in the plant.
Undo support bracket 183 from the base plate.
Undo housing screws 901/3, 552/3
Remove entire slide-in unit.
If the housing 100 remains in the plant, leave the
housing gasket 401 in the centering to protect the
housing sealing surface.