NBS®90 PolySort & SP IOM
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Revision Date: 4/25/2019
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Chapter 10: NBS
M
AINTENANCE
&
T
ROUBLESHOOTING
General
The key to ensuring the expected return on investment is to protect against premature failure with a
well-planned program of preventive maintenance.
Preventive maintenance programs examine what may fail and then formulate action plans which will
prevent failure or downtime. This kind of maintenance includes lubrication and replacement or repair of
parts before failure but after expected life has been attained.
Preventive maintenance will save expensive downtime and wasted energy. It will increase the life of
components. Along with preventive maintenance, there should be a record-keeping system. You must
know what problems you have had in the past and when different components were serviced.
A visual and audible inspection should be taken every day. You can see if a chain is loose, oil leaking,
sprocket worn; or you can hear a faulty bearing, noisy chain or any other noise that might indicate a
problem. When something major goes wrong with some component, records should be kept to see if a
pattern to the problem occurs.
All personnel working in close proximity to the conveyor should inform maintenance or their supervisor
of any unusual noise.
•
Do not perform maintenance on the conveyor until the startup
controls are locked out and cannot be turned on by any
person other than the one performing the maintenance. If
more than, one member of a crew is working on the
conveyor,
EACH CREW MEMBER MUST HAVE A LOCK
ON THE POWER LOCK OUT
. The air pressure must be
turned off to the work area. All pneumatic devices must be
de-energized to prevent accidental cycling of the device.
•
Make sure personnel are clear of all conveyor equipment
before restarting the system.
Gearmotor
The drive unit should be checked monthly. Check the gearmotor for leaking seals. Check the gearcase
for proper oil level and add the approved oil for your particular unit. Check for overheating, vibrations
and dirt buildup.
Each Nord gearmotor is supplied from the factory with the correct grade and quantity of lubricant for the
specified mounting position. Under special circumstances such as high or low ambient temperatures,
optional oils should be used.
WARNING
