SERVICE
SEASONAL INSPECTION AND SERVICE
The dryer is made of weather resis- tant material, and is designed to re- quire a minimum of service. How- ever, each season we recommend the following items be checked be- fore the unit is used, and any dam- aged or questionable parts replaced. These checks will help eliminate possible failures, and assure de- pendable operation of the equip- ment.
1.Shut off electrical power. Open power box and control box, and in- spect for moisture, rodent damage or accumulated foreign material. Remove any foreign material present. Inspect and tighten any loose terminal connections. Re- place any damaged or deteriorated wiring.
2.Check each propellor for freedom of rotation and uniform tip clear- ance. They should also be in- spected for dirt and grain dust, es- pecially inside the hub. Any addi-
tional weight can seriously effect the balance, and result in harmful vibrations and a short bearing life.
3.Check each propellor for free play. Any side play is an indication of defective motor bearings, which should be replaced to prevent a complete motor failure. Make sure motor mount bolts are tight.
4.Motorbearingsshouldbelubricated periodically, depending on operat- ingconditions. Undernormal usage it is desirable to have the motor cleaned, checked and bearings re- packed by an authorized service station every two to three seasons. If the unit is operated continu- ously through most of the year, this service should be performed each year.
Note: If on site bearing relubrication is to be performed, see lubrication instructions for ball bear- ing motors. To keep motor bearings properly lubricated, and dispel any
accumulation of moisture within the windings, the fan and auger motors should be operated for 15 to 30 min- utes each month.
LUBE PROCEDURES
If the motors are equipped with an alemite fitting, clean the tip of the fit- ting and grease with a grease gun. Use 1 or 2 full strokes on motors in NEMA 215 frame and smaller. Use 2 to 3 strokes on NEMA 254 through NEMA 365 frame. Use 3 to 4 strokes on NEMA 404 frames and larger. On motors having drain plugs, remove drain plug and operate motor for 20 minutes before replacing drain plug. On motors equipped with slotted head grease screw, remove screw and apply grease tube to hole. In- sert 2 to 3 inch length of grease string into each hole on motors in NEMA frame and smaller. Insert 3 to 5 inch length on larger motors. On motors having grease drain plugs, remove plug and operate motor for 20 minutes before replacing drain plug.
LUBRICATION INSTRUCTIONS FOR BALL BEARING MOTORS
SUGGESTED LUBRICATION INTERVALS*
Hours of Service per Year | H. P. Range | Suggested Lube Interval |
5000 | 1/8 to 7 1/2 | 5 years |
| 10 to 40 | 3 years |
| 50 to 150 | 1 year |
Continuous Normal Applications | 1/8 to 7 1/2 | 1 year |
| 10 to 40 | 3 years |
| 50 to 150 | 9 months |
Seasonal Service (motor is idle for 6 | All | 1 |
months or more) |
|
|
Continuous high ambient tempera- | 1/8 to 40 | 6 months |
tures, dirty or moist locations, high | 50 to 150 | 3 months |
vibrations or when shaft end gets hot |
|
|
* The bearings have been lubricated at the factory, thus no lubrication should be added before start up.
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