Motor Maintenance (Belt And Direct Drive) - Greenheck SWB 100 Series Installation, Operation And Maintenance Manual

If unusual conditions exist - temperatures below
32°F or above 200°F, moisture or contaminants -
more frequent lubrication is required.
With the unit running add grease very slowly with a
manual grease gun until a slight bead of grease
forms at the seal.
Be careful not to unseat the seal by over lubricating
or using excessive pressure. A guide to the amount
of grease to be used is to fill 30% to 60% of
available space in the bearing and housing.
A high quality lithium based grease conforming to
NLGI Grade 2 consistency, such as those listed
below, should be used.
Mobil 532
Mobilux #2
B Shell Alvania #2
Texaco Multifak #2
Texaco Premium #2
Unirex N2
In addition to lubricating the bearings at specified
intervals, set screws in the bearing collars should be
checked for tightness. A bearing collar which has
loosened will cause premature failure of the fan
shaft. Fasteners attaching the bearings to the drive
frame should also be checked.
MOTOR MAINTENANCE
(BELT AND DIRECT DRIVE)
Motor maintenance is generally limited to cleaning
and lubrication (where applicable). Cleaning should
be limited to exterior surfaces only. Removing dust
and grease build-up on the motor housing assures
proper motor cooling. Use caution and do not allow
water or solvents to enter the motor or bearings.
Under no circumstances should motors or bearings
be sprayed with steam, water or solvents.
Greasing of motors is intended only when fittings
are provided. Many fractional horsepower motors
are permanently lubricated for life and require no
further lubrication. Motors supplied with grease
fittings should be greased in accordance with the
manufacturer's recommendations.
WHEEL AND FASTENER
MAINTENANCE
Wheels require very little attention when exhausting
clean air, however air heavily laden with grease or
dirt will tend to accumulate on the wheel causing
unbalance. Wheels exhausting dirty or grease laden
air require frequent cleaning to assure smooth and
safe operation.
All fasteners, including set screws in the bearing
collars, should be checked for tightness each time
maintenance checks are performed.
A proper maintenance program will help preserve
the performance and reliability designed into the
fan.
6