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NB: All mechanical or electrical work must be carried out by a qualified
tradesperson
9. Motor brake noise or
chatter
(while starting chain
hoist)
A) Brake needs replacement
A) Replace brake assembly
B) Low voltage
B) Determine cause of low
voltage and bring up to within
plus or minus 10% of the voltage
specified on the motor. Measure
voltage at the lifting motor in
terminal block power input.
10. Motor brake “buzz”
(anytime chain hoist is
running)
A) Brake needs replacement
B) Broken brake coil
A) Replace brake assembly
B) Replace the brake coil and
check the relay rectifier.
Summary of Contents for DU903
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