Service guide for all portable dryers, Lubrication instructions for ball bearing motors – Grain Systems PNEG-573 User Manual

Page 50

SERVICE GUIDE FOR ALL PORTABLE DRYERS

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 pos-
sible failures, and assure dependable
operation of the equipment.

1. SHUTOFF electrical power.

Open power box

power box

power box and control

control

box

box, and inspect for moisture, ro-
dent damage or accumulated for-
eign material. Remove any fo-r
eign material. Inspect and tighten
any loose terminal connections.
Replace any damaged or deterio-
rated wiring.

2. CHECK each propellor

propellor

propellor for free-

dom of rotation and uniform tip
clearance. They should also be
inspected for dirt and grain dust,
especially inside the hub. Any ad-
ditional weight can seriously ef-

lubricated, and dispel accumulation of
moisture within the windings, the fan

fan

and auger motors

auger motors

auger motors should be oper-

ated for 15 to 30 minutes each month.

If the motors

motors

motors are equipped with an

alemite fitting

alemite fitting, CLEAN the tip of the
fitting 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

motors

motors equipped with slot-

slot-

ted head grease screw

ted 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
NEMA frame and smaller. Insert 3
to 5 inch length on larger motors. On
motors

motors

motors having grease drain plugs

grease drain plugs

grease drain plugs,

remove plug and operate motor for 20
minutes before replacing drain plug.

* The bearings have been lubricated at the factory, thus no lubrication should be added before start up.

fect the balance, and result in
harmful vibrations and a short
bearing life. Fan performance is
best when inside of housing is
free of dirt build up.

3. CHECK each propellor

propellor

propellor for free

play. Any side play is an indication
of defective motor bearings

motor bearings

motor bearings, which

should be replaced to prevent a
complete motor failure. Make sure
motor mount bolts are tight.

4. Motor bearings

Motor bearings

Motor bearings should be LU-
BRICATED periodically, depend
ing on operating conditions. Un-
der normal usage the motor
should be cleaned, checked and
bearings repacked by an autho-
rized service station every two to
three seasons. If the unit is oper-
ated continuously service should
be performed each year.

Note: If on site bearing relubrication
is to be performed, see lubrication
instructions for ball bearing motors.
To keep motor bearings properly

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

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

3 years

9 months

1 year-beginning of season

6 months

3 months

SUGGESTED LUBRICATION INTERVALS*

LUBRICATION INSTRUCTIONS FOR BALL BEARING MOTORS

LUBE PROCEDURES