Richter MNK Series - Manual (Page 29)

Series MNK 200-150-315
Page 29
9230-053-en Revision 12
TM 8195 Edition 03/2011
11 Assembly aids
11.1 Boring template for housing drain
Pump size Ident. No.
MNK 200-150-315 9217-89-1097
11.2 Pull-off device for plain bearing bushes
Pump size Ident. No.
MNK 200-150-315 9237-89-1138
Product description
If the plain bearing bushes have to be removed from the plain bearing pedestal, we recommend the use of a
special pull-off device. It prevents unnecessary damage to the shock-sensitive silicon carbide components through
the use of suitable materials.
This device is made of malleable rubber material with a plastic handle (polyethylene).
Application
Remove plain bearing bush on the inner magnet assembly side:
Push the device with the rubber part at the front through the plain bearing pedestal from the impeller side.
Position the two rubber parts centrally on the bearing bush.
Axially tighten the rubber parts by turning the handle to the right; as a result they expand radially.
This creates a friction connection between the device and the plain bearing bush which does not damage the
material.
The bearing bush can now be removed by hitting the handle centre axially.
Removing the plain bearing bush on the impeller side:
Use the device following the same procedure from the inner magnet assembly side.
11.3 Universal impeller wrench and universal inner magnet assembly
clamping device
Pump size Ident. No.
MNK 200-150-315 Clamping device
9237-89-1131
MNK 200-150-315 Impeller wrench
9237-89-1130 7 blades Hydraulic 1
9237-89-1132 6 blades Hydraulic 2
Product description
The loosening torque can be up to 800 Nm depending on the magentic drive
torque installed. To ensure that the rotating unit can be easily dismantled, we
recomend the use of the universal impeller wrench in conjunction with the
universal inner magnet assembly clamping device.
Universal inner magnet assembly clamping device
It is advisable to secure the clamping device on a work bench with screws M16
using the 4 bores. Two tapped bores M 12 are provided for transport.
The device consists of two non-magnetisable tube halves one of which is
welded to the base plate. The other half can be removed by undoing the 4 hex.
head screws.