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Maintenance
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Assembly
1. Mount the impeller unit to the magnet capsule unit.
a. MX-F250/-F251/-F400/-F401
Slide the impeller unit down into the magnet cap-
sule unit as far as it will go, locating the U-shape
holes under the through holes.
Check that the end of press-fitting parts has come
at a bearing surface. If the impeller unit can not be
fitted to the magnet capsule unit, warm the magnet
capsule unit in hot water (about 90°C for five min-
utes) for softening. Be careful not to get scalded
with hot water.
b. MX-F402/-F403
The mating surface on the magnet capsule unit
has two hole sizes. Large holes (stepped holes with
6mm at outer dia. & 12mm at inner dia) are for the
lock pins and the small holes (3mm dia.) are for
cooling. Slide down the impeller unit into the mag-
net capsule as far as it will go, locating the U-shape
holes under the smaller holes (3 mm dia.). If it is
hard to combine them, warm the magnet capsule
unit in hot water (approx. 90°C) for 5 minutes. Be
careful not to scald at this time.
Through-hole
U-shape hole
The end of
press-fitting part
Check no clear-
ance between the
bearing surface
and the press-
fitting parts.
