Viking Pump TSM680: 895, 893 and 897 Mag Drive - Manual (Page 12)

SECTION TSM 680 ISSUE G PAGE 12 OF 17
ASSEMbLY OF COUPLING
Series MD – A4 / A9 Coupling
DANGER!
Follow these directions exactly to avoid injury
to self or damage to pumping unit. be careful
to keep inner and outer magnets at least (1)
foot apart until step 5. Do not engage magnets
in any other fashion.
1. Inspect the magnets for any steel objects, which may
be attached. Remove any foreign material. Apply Loctite
and tighten the setscrews onto the motor or bearing
carrier key and shaft. Locate outer magnet assembly on
the motor shaft per dimension. See Figure 27.
2. Mount the coupling bracket to the motor (or bearing
carrier) and secure with the 4 capscrews. See Figure
28. Reach in and rotate the magnets by hand to make
sure there is no interference. If rubbing occurs check
dimension in Figure 27 or contact the factory.
3. Install the first external retaining ring (in the groove
closest to the casing) and the key on the pump shaft.
Slide the inner magnet assembly onto the shaft, (the
counterbore of the magnet is pointed away from the
pump) so that it butts against the snap ring. Install the
second external retaining ring (closest to end of shaft) to
secure magnet. See Figure 29.
4. Check to make sure the pump rotates freely by turning
the inner magnet assembly. Inspect the magnet to make
sure it has not picked up any foreign particles, which
could damage the pump. Make sure the static o-ring is
in good condition and in place. Place the canister onto
pump and press on until the canister is in contact with
the pump mounting flange.
CAUTION !
Do not place fingers onto front of pump mount-
ing flange. Align canister into bore of bracket
and gently slide in. When magnets start to
engage, the unit will finish engagement on its
own very rapidly. Make sure fingers are not on
the front of the pump (see figure 30).
5. Be certain that the power supply to the pump is “Locked-
out”. Check that pump rotates freely by spinning motor
fan blades or bearing carrier shaft. Finish the assembly
by securing the pump to bracket (See Figure 31). Be
certain that the power supply to the pump is “Locked-
out”. Check that pump rotates freely by spinning motor
fan blades or bearing carrier shaft.
FIGURE 27
FIGURE 28
FIGURE 29
COUPLING
BRACKET
RETAINING RINGS
STATIC O-RING
INNER MAGNET ASSEMBLY
CANISTER
56C, 143TC
OR 145TC
FOOTED
MOTOR
OR BEARING
CARRIER
182TC
OR
184TC
FOOTED
MOTOR
SETSCREWS
(2) REQUIRED
SETSCREWS
(2) REQUIRED
OUTER
MAGNET
ASSEMBLY
OUTER
MAGNET
ASSEMBLY
PLACE HANDS BACK HERE
DO NOT PLACE
FINGERS HERE
PUMP – BRACKET
CAPSCREWS
(2) REQUIRED
FIGURE 30
FIGURE 31