17
17
NOTE:
List of brand names is for
identification only and are not
exclusive recommendations.
Detailed Component
Maintenance
Procedures
Fan Motors
Inspection & Maintenance
Adjustable Motor Base
Fan Removal Instructions
Fan Shaft Bearings
Inspection & Maintenance
• Remove the hardware and clips which fasten the removable grating section directly
below motor base.
• Remove grating section directly below the motor base.
• Attach the other end of the lifting device to the factory supplied lifting points which
are mounted on the motor. Verify that the lifting device is secure at all attachment
points.
• Lift the motor into place.
• Reinstall grating section directly below the motor using factory supplied hardware.
• Fasten the motor to the motor base using factory supplied hardware.
• Remove lifting device from motor and from davit arm.
• Rotate the davit arm so that it is out of the area immediately above the fan discharge.
• Install the driver sheave and bushing, and align the drives per the drive alignment
instructions.
• Apply RUST VETO
®
to the exposed motor shaft and bushing.
• Install the drive belt and tension it per the instructions on
page 15
.
• Rewire the motor.
• Verify that area is clear of tools and personnel.
• From a safe location,re-energize the motor and check for proper rotation per the start-
up instructions.
Fan Shaft Bearings
Two pillow block ball bearings support each fan shaft. Each bearing is equipped with a
lubrication fitting and a slinger/locking collar to keep out moisture. Extended lubrication
lines are provided for convenience.
Inspection & Maintenance
• Lubricate the bearings with a manual grease gun or BAC’s optional Automatic Bearing
Greaser. Do not use high-pressure grease guns because they may rupture the bearing
seals.
• For units equipped with extended lubrication lines, if re-greasing in colder ambient
temperatures, apply the grease more slowly to allow it to flow through the extended
lube lines without over-pressurizing them.
• Lubricate the bearings with one of the following compatible water resistant greases
which are suitable for ambient temperatures ranging from - 65ºF (-53.9ºC) to +250ºF
(121.1ºC).
– Amoco - Rycon Premium #3
– Chevron - SRI
– Citgo - Polyurea MP2™
– Conoco - Polyurea 2™
– Exxon - Polyrex
®
EM
– Exxon - Unirex N™
– MobilGrease
®
- AW2
– Shell - Gadus S2 V100 3
– Shell - Gadus S3 T100 2
– SKF - LGHP2™
– Unocal 76 - Unilife Grease™
