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DC 5000 MOTOR AND WATER PUMP MAINTENANCE
Lubrication
The DC 5000 motor and the March water pump are supplied with lifetime
lubricated ball bearings.
Brushes (Leeson Motor)
Motor brushes need periodic inspection and replacement as wear indicates.
Brush wear is greatly influenced by individual application, voltage and heat load.
It is recommended that brush wear be checked at early intervals of operation in
order to determine future required inspection.
With daily use of the DC 5000 as a primary system make an
initial inspection of the brushes after:
Single plate refrigerator 6 months
Multi-plate system with freezer 3 months
Standard Leeson brushes have an initial length of 1 ¼”. When brushes are worn
to a length of 5/8” they and the brush springs should be replaced. Operation of a
motor with brushes shorter than this will cause the brushes to jam in the brush
housing, arcing and wearing the commutator. A worn or damaged commutator
will accelerate brush wear and further damage your motor. It is normal for one
brush to wear more than the other. Check them both.