IWAKI PUMPS MXM Series, Instruction Manual

Page: 29 / 44

- 27 -
Maintenance
■
Periodic inspection
To ensure efficient and smooth operation, perform periodic inspection. Be careful not to damage internal
sliding parts and plastic parts when dismantling the pump.
The magnetic force of the drive magnet unit and magnet capsule assembly is strong. Be careful not to
catch the finger. Do not put electrical devices such as a watch and mag card close to the magnets.
Interval
Every six months
(Maintain an
inspection record)
Part names
(Drive magnet unit)
Drive magnet
Hex. socket set screw
Rear casing
Rear thrust
(Magnet capsule
assembly)
Magnet capsule
Bearing
(Impeller unit)
Impeller
Mouth ring
Front case
Rear case
Liner ring
Spindle
Drain cap
Inspection items
● Wear trace
● If the drive magnet is correctly
mounted by hex. socket set
screws and they are not loose.
● Decentering of magnet and
motor shaft (Max.1/10mm)
● Wear tracks on an inner surface
● Cracks
● Rear thrust wear degree
● Spindle end wear degree
● Contamination in rear casing
● Wear tracks on the rear end or
side face of the magnet capsule
● Cracks on the rear end or side
face of the magnet capsule
● Bearing wear degree
● Loose fit of the impeller unit
● Mouth ring wear degree
● Cracks
● Evidence of cavitation (Wear or
seizing on the mouth ring.)
● Contamination in the impeller
● Impeller deformation
● Contamination
● Cracks
● Wear degree, cracks and wear
tracks on liner ring
● Drain port clogging
● Swelling or a crack on O ring
● Wear tracks on an unlikely portion
● Cracks
● Wear degree
● Loose fit
Measures
○ Finding wear trace, contact us.
○ Reset the drive magnet to the
motor shaft and retighten the
screws.
○ Retighten the hex. socket set
screws or replace the drive
magnet (Contact us).
○ Contact us.
○ Replace as necessary.
○ Contact us.
○ Replace as necessary.
○ Remove contamination.
○ Contact us.
○ Contact us.
○ Replace as necessary.
○ Replace or contact us.
○ Replace as necessary.
○ Replace as necessary.
○ Remove the cause of cavita-
tion.
○ Remove contamination.
○ Replace as necessary.
○ Remove contamination.
○ Replace as necessary.
○ Contact us.
○ Remove clogging
○ Replace as necessary.
○ Contact us.
○ Replace as necessary.
○ Replace as necessary.
○ Retighten the cap.