B: Outer Magnet-Motor Assembly - Liquiflo H-Series Installation Operation & Maintenance

Liquiflo Installation, Operation & Maintenance Manual
Part B: Outer Magnet-Motor Assembly
The axial positioning of the outer magnet on the motor shaft is critical to pump performance. Improper
positioning can cause the outer magnet to rub against the front housing or produce an axial load on the inner
magnet, causing premature pump wear. Improper positioning can also cause the outer and inner magnets to
decouple. Refer to the diagrams on Page 29 when positioning the outer magnet.
20 Install the outer magnet as follows:
a) Insert motor key into the keyway
on the motor shaft.
b) Apply a small amount of anti-seize
compound to the motor shaft.
c) Align keyway of the outer magnet's hub (33)
with the key on the motor shaft.
d) Slide the outer magnet (10) onto the motor
shaft and position the hub as shown on Page 29. shaft and position the hub as shown on Page 29.
e) Tighten the two setscrews (17) on the hub.
Outer Magnet & Pedestal Part Numbers
The Specific outer magnet and pedestal supplied with the pump is dependent on the motor frame selected; the
outer magnet also depends on the magnetic coupling size (see table below). The pump Model Code designates
both the Outer Magnet Bore Size (Motor Frame) and the Magnetic Coupling Size (see Table 6, Page 6).
Standard Motor Frame
NEMA 56C
NEMA 143TC
NEMA 182TC or 184TC
IEC 71 (B5 Flange)
IEC 80 (B5 Flange)
IEC 90 (B5 Flange)
IEC 100 or 112 (B5 Flange)

= S, U, A, B, C or V (Magnetic Coupling Size; see Table 3, Page 5.)
* Adapter plate required (see Page 29).
Motor Shaft Diameter or
Outer Magnet Bore Size
5/8 in.
7/8 in.
1-1/8 in.
14 mm
19 mm
24 mm
28 mm
2 8
H&3-Series MAG-DRIVE Gear Pumps
Models H1F-H9F, 31F-39F & 311F
Outer Magnet
Part Number
SOMC  -5
SOMC  -7
SOMC  -9
SOMC  -71
SOMC  -80
SOMC  -90
SOMC  -112
Pedestal
Part Number
SP000
SP000
SP000*
SP001
SP002
SP002
SP002-112