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8. Daily Inspection and Maintenance
DANGER
Do not handle the unit when cables are live. Be sure to turn off the power; otherwise,
electric shock may result.
Do not approach or touch any rotating parts (output shaft, etc.) during maintenance or
inspection of the unit; loose clothing may become caught in these rotating parts and cause
serious injury or death.
Customers shall not disassemble or modify
explosion-proof type motors
; otherwise,
explosion, ignition, electric shock, or damage to the equipment may result.
The lead-in condition of an
explosion-proof type motor
shall conform to the facilities
electrical codes, extension regulations and explosion-proofing guide, as well as the
maintenance manual; otherwise, explosion, ignition, electric shock, or damage to the
equipment may result.
CAUTION
Do not put fingers or foreign objects into the opening of the gearmotor otherwise, electric
shock, personal injury, fire, or damage to the equipment may result.
The gearmotor becomes very hot during operation. Touching the unit with bare hands may
result in serious burns.
Do not touch the terminal when measuring insulation resistance; otherwise, electric shock
may result.
Promptly identify and correct, according to instructions in this manual, any abnormalities
observed during operation. Do not operate until abnormality is corrected.
Do not use damaged gearmotors; otherwise, personal injury, fire, or damage to the
equipment may result.
We can not assume any responsibility for damage or injury resulting from an unauthorized
modification by a customer.
Dispose gearmotor, lubricant as general industrial waste.
When measuring the insulation resistance of an
explosion-proof type motor
, confirm that
there is no gas, steam, or other explosive substance around the unit in order to prevent,
explosion or ignition.
COMMON
8. Daily Inspection and Maintenance
. The gear section is filled with long-life grease that allows it to operate for extended
periods without replenishment. However, overhaul the gear section every 20,000
hours or 3 to 5 years to ensure long service life.
. Sealing effect of an oil seal will be deteriorated due to natural degradation and wear
as its life during long term operation.
Life time of an oil seal varies substantially depending on service condition and
ambient environment for the reducer.
It is recommendable that oil seal is changed every one to three years as a guide for
normal operation. (Under uniform load, room temperature and 10 hours operation
per day)
In addition, oil seal and V-ring should be changed with new one when wear and/or
rust are found on the sliding surface of it.
As sliding surface is carbon steel, it may get rusted due to rainwater or condensation
and damage an oil seal. Therefore periodical rust prevention is required.
. Overhauling the gearmotor or reducer reguires specific skills. Be sure to use a
workshop specified by Sumitomo for overhaul.
