Viking Pump TSM341.1: SG Mag Drive Series - Manual (Page 15)

SECTION TSM 341.1 ISSUE J PAGE 15 OF 19
DANGER !
Be certain that the driving means (motor,
turbine, engine, etc.) has been “locked out”
or made non-operational so that it cannot be
started while work is being done on pump.
1. Inspect the magnets for any steel objects, which may be
attached. Remove any foreign material. If using bearing
carrier assembly option, please see specific assembly
instructions on page 15.
MD2-B Couplings:
Mount the outer magnet assembly. Locate the outer
magnet assembly per dimension (See Figure 25).
MD2- C Couplings:
Units using a NEMA C-face frame motor will require
an adaptor plate. Mount the adaptor plate to the motor
if it was removed. Mount the outer magnet assembly.
Locate the outer magnet assembly per dimension
(See Figure 25).
Apply Loctite® and tighten the setscrews onto the motor
or bearing carrier key and shaft.
2. If the bracket is not fastened to a base, clamp it down.
Mount the motor or bearing carrier to the bracket. Reach
in and rotate the magnets by hand to make sure there is
no interference. If rubbing occurs check the dimension in
Figure 25 or contact the factory.
Dimensions are not the same between designs
3. 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 canister O-ring
is in good condition and in place. Place the canister onto
Loctite® is a trademark of Henkel Consumer Adhesives, Inc.
MD2-B Magnets
(Measured from the motor face - not pilot)
Motor
“A” Dimension
(Inch)
“A” Dimension (Metric)
I.E.C. 110/112 7.89 200.4 MM
I.E.C. 132 8.68 220.5 MM
182TC/184TC 8.11 206 MM
213TC/215TC 8.49 215.7 MM
254TC/256TC 9.11 231 MM
MD2-C Magnets
(I.E.C. Measured from motor face
NEMA Measured from edge of adaptor plate)
Motor
“A” Dimension
(Inch)
“A” Dimension (Metric)
I.E.C.132 10.43 265 MM
I.E.C.160/180 11.61 295 MM
213TC-256TC 10.43 265 MM
284/286TC 10.43 265 MM
the pump and press on until the canister is in contact
with the pump mounting flange.
4. Use a fully threaded M10X120mm capscrew (jackscrew)
to guide the canister into the bracket. Thread the
capscrew all the way into the bracket as shown in
Figure 18, page 11. Use an overhead hoist to support
the pump if possible while guiding the canister into the
bracket opening.
Carefully back out the capscrew while guiding the
canister into the bracket. Secure the pump to the bracket
with four 12mm capscrews.
5. Be certain that the power supply to the pump is “Locked-
out”. Check that pump rotates freely by spinning the
motor fan blades or the bearing carrier shaft.
MD2-B BEARING CARRIER
ASSEMBLY
1. Place some Loctite® on the O.D. of the first bearing
and press into the housing bore. Position the bearing
spacer in the bore and insert the second bearing. Center
the bearing spacer then press in the shaft with one
external retaining ring on shaft. Press down until the
ring contacts the bearing race, then install the second
ring. Install the internal retaining ring into the bearing
housing. See Figure 23, page 13.
2. Slide the outer magnet assembly onto the pump shaft.
Locate the outer magnet per dimension “A” listed below
then tighten the two setscrews. See Figure 23, page 13.
Pump Design “A” Dim.
U.S. Inch Design 8.49 inches
Metric Design 220.4 mm
“B” Coupling
Outer Magnet
Location Dimension*
MD2-C BEARING CARRIER
ASSEMBLY
Depending on the condition of the bearings, either replace or
repack existing bearings by cleaning and packing with multi-
purpose NLGI # 2 grease. Replace the lip seals if necessary.
See Figure 24, page13 for lipseal orientation.
1. Place the bearing housing milled-face down with cast
surface up. If the inner lip seal was removed, install with
the cup up. Install the cup of inner bearing into housing
(cup up).
2. Slide the inner tapered roller bearing cone onto the shaft
(cone down) and then the inner spacer followed by the
outer cone (cone up).
3. Guide shaft into the housing and into the inner lip seal.
Slide the tapered roller bearing outer cup into the housing
(cup down) and the bearing spacer collar onto shaft.
4. Thread in the end cap until it meets the outer cup. Install
the lockwasher and locknut. Secure the end of the shaft
in a vice with padded jaws then tighten the locknut.
Tighten the end cap until there is considerable drag on
the bearings, then back off the end cap approximately
10°. Secure the end cap into position by tightening the
two set screws.
5. Tighten the locknut again, then bend over the appropriate
lockwasher tab.
FIGURE 25
* Dimensions are not the same between designs