Trane DFIA, Установка, эксплуатация и обслуживание

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MUA-SVX01A-EN • Direct-Fired Make-up Air
53
Maintenance
Lubrication Requirements
Some blower motors require lubrication while others do not. Those that require
lubrication can be identified by the presence of grease plugs in the motor casing
at each end. Motors that do not have grease plugs cannot be greased and are
lubricated for the life of the motor bearing.
Lubrication of motors should be done while the motor is warm and at a standstill.
Remove and clean all grease plugs and insert a grease fitting in the upper hole in
the motor casing at each end (viewed as if motor were sitting horizontally on its
base). There may be one or two plugs in each end casing of the motor. Add a
small amount of a clean, good grade ball bearing grease (such as Exxon®
Polyrex™ EM or equal, with a low pressure grease gun. Run the motor five
minutes before removing the grease fittings and replacing the plugs.
CAUTION
Equipment
Damage!
An excess of grease will overheat the bearings.
Note: On totally enclosed fan cooled (TEFC) motors, the rear end fan housing
must be removed to expose the grease plugs.
Pillow Block Bearings
Pillow block bearings are used on supply blower(s). Bearings have been
prelubricated with a number 2 lithium based greased. Re-lubrication should be
done with a similar grease using a low pressure grease gun. Wipe all grease
fittings clean before adding grease. Grease should be added slowly, in small
amounts at frequent intervals while the shaft is being manually rotated.
A slight showing of grease at the seals with accompanying normal bearing
temperature indicates proper lubrication. Normal temperature can range from
"cool" to "hot to the touch" depending on size, speed and surrounding conditions.
Excessive bearing temperature indicates faulty lubrication. An insufficient
amount of grease is suggested by a bearing showing no grease at the seals, and
Table 11. Lubrication Instructions
Item Manufacturer Bearing Type
All 3-PH Fan Motors (1 HP to
100 HP) ODP, TEFC
U.S., Baldor™ or Equal Single Row Ball Bearings
All 1-PH Motors (Fractional
HP) ODP, TEFC or TEAO
Century™, G.E.™, or Equal Bronze Sleeve Bearings
Franctional HP 1-PH ODP or
TEFC
Century, G.E., or Equal Bronze Sleeve Bearings
Fan Shaft Bearings Fafnir or Equal Self-aligning, Single Row or
Double Row Ball Bearings,
Resilient Mounted
Dampers Applied Air™ or Equal Sleeve