Triangle Engineering of Arkansas VAB - Manual (Page 3)

4. LUBRICATION
(BELT DRIVE) Bearings operating in a clean
environment and temperatures between 32 degrees F
and 200 degrees F should be lubricated semi-annually
using a high quality lithium based grease. Bearings
operating outside these temperature parameters require
special high or low temperature grease. If contaminated
or high moisture conditions exist, more frequent
lubrication is required.
Some model TAB fans may be equipped with
extended lubrication lines as optional equipment. The
grease fittings are located on the exterior of the fan
housing next to the motor cover and should be wiped
clean before adding grease.
When adding grease to fan bearings, rotate the
fan shaft while slowly operating a manual grease gun.
Be careful not to unseat the bearing seals by over-
lubricating or using excessive pressure. Stop pumping
when a very slight resistance is felt at the grease gun.
(BELT AND DIRECT DRIVE) 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 directions on the motor nameplate.
5. REMOVAL OF DUST AND DIRT
Model TAD and TAB fans require very little
attention when moving clean air. If exhausting dirty
or contaminated air, the propeller should be cleaned
periodically. If left to accumulate, dirt on the propeller
blades may cause an unbalanced condition resulting
in excessive vibration and premature failure of the fan.
Some fans are supplied with an optional access door for
inspection, servicing and cleaning of fan components.
Periodically, the optional motor cover should be
removed (if supplied) and dirt removed from the
motor. Cleaning should be limited to exterior surfaces.
Removing dust and dirt accumulation on the motor
housing assists motor cooling. Motors should never be
sprayed directly with water, steam or solvents.