Every 6 months
* Inspection record
should be kept.
Inspection Timing
- 36 -
Part Name
Drive magnet unit
Rear casing
Magnet capsule
Impeller
Front casing
Spindle
Check Points
K
Are there slide-scratches?
K
Is housing fixed normally? Is hex. socket set screw loose?
K
Are inner perimeter of magnet and motor shaft coaxial?
(Max. eccentricity: 1/10 mm)
K
Are there slide-scratches in bore?
K
Are there cracks on liquid end part?
K
Wear of thrust ring.
K
Wear of spindle tip. (MDF-L 250, 401, 422, 423 and 425)
K
Stains in rear casing.
K
Are there a slide-scratches in the rear section or in the
cylindrical body?
K
Are there cracks in resin of rear section or in cylindrical
body?
K
Wear of bearing. (Measure dimensions.)
K
Condition of fixed with impeller.
K
Wear of mouth ring. (Measure dimensions.)
K
Wear of impeller thrust. (MDF-L 250, 401, 422, 423 and
425)
K
Are there cracks?
K
Are there cavitation marks (such as mouth ring condition,
wear, seizure)?
K
Stains or clogging inside impeller.
K
Dimensional change in impeller.
K
Stains in liquid contacting part.
K
Are there cracks?
K
Are there wear, slide-scratches, or cracks in thrust ring?
K
Is drain clogged?
K
Are there expansion or cracks on O ring?
K
Slide-scratches in unlikely position.
K
Are there cracks?
K
Wear of abrasive section.
