Series MNK pedestal group 4
Page
17
9230-003-en
Revision 19
TM 10458
Edition 06/2022
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 evac-
uated and flushed, residue of the medium
may still remain in the pump, e.g. be-
tween 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 at-
tracted: 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.
Die Pumpe braucht nicht entleert werden.
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 draw-
ing 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 cen-
tering to protect the housing sealing sur-
face.
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 ped-
estal. See assembly aids in
section 11.4
.
The torque of the magnetic coupling is indicated on the
nameplate
.
7.6.1 Dismantling the slide-in unit
♦
Transport the slide-in unit using the crane hook lug
moulded on the lantern.
As an adiitonal aid, the ring bolt provided can be
screwed into the bearing pedestal flange at 12
o'clock.
Beforehand, remove the threaded sealing cap.
As a result, two slinging aids are available.
♦
Secure slide-in unit on a work bench or a work top.
♦
Remove attachment screws
901/17
with washers
554/11
.
♦
Remove threaded sealing cap from the tapped
bores of the bearing pedestal flange.
Insert the two assembly threaded rods M 16 pro-
vided.
