FAN SERVICE
Fan and Heater
Motors used in GSI fan units are all standard NEMA frame motors and are specially designed for use in crop drying applications. Most of the replace- ment parts for these motors are handled by authorized service stations of the various motor manufacturers.
1.Always disconnect and lock out power before working on or around fan motor and electrical components.
2.Malfunctioning electrical components should be checked by a qualified electrician.
3.For extra motor life, any electric motor should be run for 30 minutes, once a month. This will help eliminate any damaging mois-
ture
4.If excess vibration shows up at some point when the fan has been running smoothly, check the blade for these conditions:
a.Fans setting idle in the summer offer an excellent place for mud dobbers to build their nests. A mud dobber nest on the back of the fan blade will cause the fan to be out of balance and vibrate.
b.Also, mice have been known to nest in the back of a blade. When the fan is started the centrifugal force kills the mice, but throws the blade out of balance.
Lubrication
This is a ball bearing motor. The bearings have been given initial lubrication at the factory. Motors without regreasing capability are fac- tory lubricated for normal bearing life.
Relubrication
Intervals
(Motors with Regreasing Capability)
New motors having been in stor- age for over a year should be
Hours of | Suggested Relube Interval | ||
Service Per Year |
| ||
NEMAFRAME SIZE | |||
|
|
|
|
| 42 to 215T | 254 to 326T | 364 to 447T |
5000 Hrs. | 5 years | 3 years | 1 years |
Continuous Normal Application | 2 years | 1 years | 9 months |
Seasonal Service Motor is idle | 1 year | 1 year | 1 year |
for 6 months or more | (beginning of | (beginning of | (beginning of |
| season) | season) | season) |
Continuous high ambients, dirty |
|
|
|
or moist locations, high | 6 months | 6 months | 3 months |
vibration or where shaft end is |
|
|
|
hot |
|
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|
|
|
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relubricated by the procedure noted in the chart to ensure long operating life.
Lubricant
Baldor motors are
lent greases which are compatible with the Baldor furnished grease are Chevron Oil's "SRI No. 2"
and Texaco Inc.'s "Premium RB".
Procedure
Overgreasing bearings can cause premature bear- ing failure. If motor is equipped with Alemite fitting, clean tip of fitting and apply grease gun. Use 1 to 2 full strokes on motors in NEMA 215 frame and smaller. Use 2 to 3 strokes on NEMA
254 thru NEMA 365 frame. Use 3 to 4 strokes on NEMA 404 frames and larger. On motors having drain plugs, remove grease drain plug and oper- ate motor for 20 minutes before replacing drain plug.
On motors equipped with slotted head grease screw, remove screw and apply grease tube to hole. Insert 2 to 3 inch length of grease string into each hole on motors in NMEA 215 frame and smaller. Insert 3 to 5 inch length on larger motors. Motors having grease drain plugs, remove plug and operate motor for 20 minutes before replacing drain plug.
Keep grease clean. Lubricate motors at stand- still. Remove and replace drain plugs at stand- still. Do not mix petroleum grease and silicone grease in motor bearings.
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