Assembly; Waste Handling/Material Recycling - Johnson Pump SPX MDR Manuel D'utilisation

3.5.2
!
3.6
16

Assembly

1 Place the motor with the shaft facing upwards. Check that the drive magnet (pos 13)
easily can be slided onto the motor shaft. If necessary the motor shaft should be
polished.
2 Assemble the flange (pos 1) to the motor with the assembling hole facing in the same
direction as the motor feet. Bolt the flange to the motor with the 4 screws (pos 12)
and the washers (pos 11). Secure with Loctice.
3 Assemble the drive magnet (pos 13) to the motor shaft and lock the drive magnet
with the two locking screws (pos 2). The screws can be reached through the
assembling hole in the flange (see chapter 4).
4 Assemble the magnet housing (pos 3) with the reinforcement (pos 19 – not available
for MDR45) on the flange and check that the drive magnet can be turned without
touching the magnet housing or reinforcement.
5 Assemble the rear wear plate (pos 4) onto the ceramic shaft (pos 5). Note that the
smooth side (without the "dot") of the wear plate must face the impeller bearing.
Assemble the shaft and wear plate in the magnet housing. Slide the impeller (pos 6)
onto the shaft followed by the front wear plate (pos 4) with the smooth side facing the
impeller bearing (not available for MDR105 and MDR116 where the front wear plate
is integrated in the impeller).
6 If reusing an old impeller, check that the impeller bearings are not worn beyond the
diameter specified in paragraph 3.4 "Routine control". If the bearings need to be
replaced, the new bearings must be reamed jointly after assembly in the impeller. Turn
the impeller by hand and check that it is running easily on the shaft.
7 Assemble the O-ring (pos 7):
• for MDR45 and MDR85 in the groove of the magnet housing
• for MDR75 in the groove of the pump body
• for MDR105 and MDR116 at the diameter 135 mm in the magnet housing.
8 Assemble the pump body (pos 8) and tighten the screws (pos 10) together with the
washers (pos 9) and nuts (pos 15).
For the MDR116 the spacer (pos 16) must be mounted before assembly in the
pump body.

Waste handling/material recycling

At the products end of life, please dispose of the product according to applicable law.
Where applicable, please disassemble the product and recycle the parts material.
Installation and maintenance
MDR/EN (1206) 3.2