IWAKI PUMPS MXM Series, Instruction Manual

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Maintenance
2. Insert the magnet capsule assembly plus the
impeller unit into the rear casing slowly.
Do not allow iron pieces to adhere to the magnet
capsule assembly.
3. Mount the rear casing to the bracket with the
magnet capsule assembly in it.
CAUTION
Magnet force is very powerful. Apply plas-
tic or wooden spacers between the rear
casing and the frame so as not to catch
the fingers.
4. Fit O ring to the front casing. Check that seal-
ing surfaces are free of dust or scratches. Make
sure that O ring is in place and will not be out of
the groove.
CAUTION
Replace O ring and gasket with new ones
at each time of replacement. Reusing old
O ring and gasket could reduce seal per-
formance and result in leakage.
5. Mount the front casing to the motor bracket.
Tighten the hex. socket bolts diagonally and
equally. Tightening torque is shown below.
CAUTION
The hex. socket bolt length differs with
each position. Be sure to select proper
bolts to each position. Otherwise, leak or
other failure may result.
6. Hand tighten the drain cap and check it is
secured. Use a tightening tool such as pliers to
give it further torque, especially before operation
with a high-temperature or a high-pressure liq-
uid. Be careful not to tighten it too much, or the
plastic cap may break.
Model Tightening torque Bolt size
MXM220/221 12.5N•m M8
MXM441/442/542/543/545 24.5N•m M10
Impeller
Spacer
Bracket