Airstream PNEG-343 - Manual (Page 26)

26
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. Motor bearings should be lubricated
periodically, depending on operat-
ing conditions. Under normal 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.
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.
LUBE PROCEDURES
* The bearings have been lubricated at the factory, thus no lubrication should be added before start up.
H. P. Range
1/8 to 7 1/2
10 to 40
50 to 150
1/8 to 7 1/2
10 to 40
50 to 150
All
1/8 to 40
50 to 150
Suggested Lube Interval
5 years
3 years
1 year
1 year
3 years
9 months
1 year-beginning of season
6 months
3 months
LUBRICATION INSTRUCTIONS FOR BALL BEARING MOTORS
SUGGESTED LUBRICATION INTERVALS*
Hours of Service per Year
5000
Continuous Normal Applications
Seasonal Service (motor is idle for 6
months or more)
Continuous high ambient tempera-
tures, dirty or moist locations, high
vibrations or when shaft end gets hot