Farm Fans C-2120A, Operator'S Manual, Page: 45 / 68

SEASONAL INSPECTION AND SERVICE
The dryer is made of weather resistant construction
and is designed to require a minimum of service; how-
ever, we recommend the following items be checked
before the unit is used each season. Replace any
damaged or questionable parts. These checks will
help eliminate possible minor failures and assure
dependable operation of the equipment when it is
needed.
1. Shut off electrical power. Open main ASC control box
and inspect for any moisture, rodent damage, or accu-
mulated foreign material. Remove all foreign material
present.
Inspect for and tighten any loose terminal
connections. Replace any damaged or deteriorated
wiring. Remove fan-heater control box cover and
repeat the inspection and cleaning procedure.
2. Check propeller for freedom of rotation and uniform tip
clearance. It should also be inspected for accumulat-
ed dirt and grain dust,
especially inside the hub , as
any additional weight can seriously affect the balance
and result in harmful vibrations and shortened bearing
life. Keep inside of the housing free of dirt build-up for
efficient fan performance.
3. Check propeller for free side play. Any side play is an
indication of defective motor bearings which should be
replaced to prevent a complete motor failure. Make
sure all motor mount bolts are tight.
4. Motor bearings should be relubricated periodically,
depending upon operating conditions. Under normal
usage, it is desirable to have the motor cleaned and
checked, and the bearings repacked by an authorized
service station every two to three seasons. If the unit
is operated continuously through most of the year, this
service should be performed each year.
NOTE: If on-site bearing relubrication is to be per-
formed, use CHEVRON SR1-2 high temperature
grease or a compatible equivalent product.
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
minutes each month. The motor manufacturers'
Authorized Service Station list is packed with all units
and should be saved for reference and identification of
service stations.
5. Remove and clean the gas line strainers. Make certain
gas valves are closed and that gas is purged from sys-
tem before attempting disassembly.
6. C-2130A and C-2140A upper (octagonal) burners:
Check burner for loose or missing hardware. Also,
inspect the burner's combustion holes for excess
buildup, using a .086 dia. (#44) drill bit to clean if nec-
essary. See Fig. 7-1.
All other (Starfire) burners: Inspect the primary air
screen (each burner - at the top of the burner casting)
and the burner cup for any accumulation of foreign
material. Clean, if required. Foreign material in the
burner cup or casting will not burn out and will impair
burner operation.
7. Inspect ignitor plug and clean the electrodes, if
required (each burner). Use an ignition point file to
remove carbon and rust between the electrode sur-
faces. Spark gap should be about 3/32 inch.
8. Inspect flame switch for possible damage or poor con-
nections (each burner). The flame switch and ignitor
plug wires must be in good condition.
9. Inspect and manually rotate the top auger paddle
assembly. The paddle unit must rotate freely without
any indication of sticking or binding.
10. Inspect all drive belts and chains for proper adjustment
and condition. Readjust tension as required. See Figs.
6-10 to 6-15.
NOTE: All auger and meter roll end bearings are life-
time lubricated and do not require service relubrication.
Remove gearbox drive cover and check SCR drive belt
for proper adjustment and condition. Also check oil
level in gearbox. See Fig. 6-14 for oil level plug loca-
tion. For recommended lubricant, see the SPEED
REDUCER GEARBOX subhead under "SCR Drive and
Meter Roll" later in this section.
11. Lubricate the auger drive SPEEDJACK SLEEVE
BEARING FITTINGS as follows:
Relubricate the top and bottom auger speedjack bear-
ings every 100 hours of operation using a dependable
brand of multi-purpose lithium base bearing grease.
See Fig. 6-11 (top auger speedjack bearings not
shown).
12. Operate dryer clean-out mechanism and check it for
proper operation. See Fig. 3-2. With clean-out open,
inspect for and remove all dirt and trash accumulation.
NOTE: Do not allow high moisture material to collect
within the auger trough area as it may adversely affect
the metal parts.
43
OCTAGONAL
BURNER
VAPOCT.DS4
SIDE
VIEW
PERIODICALLY CHECK
COMBUSTION HOLES FOR
BUILDUP. CLEAN WITH .086
DIA. (#44) DRILL IF NECESSARY.
Fig. 7-1 Octagonal burner