Farm Fans C-2120A, Руководство оператора, Страница: 14 / 68

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Burner must be operating on Lo-Fire when making this
adjustment.
NATURAL GAS LO-FIRE — For natural gas models,
turn the Flow Control valve handle to provide the low-
est pressure listed for (N) "Operating Pressure Range"
in Table 2-1, while the burner is operating on Lo-Fire
(see Fig. 6-4).
BURNER CYCLE — When burner is operating proper-
ly, it should automatically cycle at regular intervals from
Hi-Fire to Lo-Fire, as indicated by the corresponding
pressure change on the gas pressure gauge. It is not
necessary for burner to cycle with short 5 to 10 second
intervals, BUT IT IS IMPORTANT THAT THE BURNER
DOES CYCLE OCCASIONALLY.
If burner remains in Hi-Fire and does not cycle,
increase Gas Regulator pressure setting on propane
models, or the Manual Shut-off valve pressure on nat-
ural gas models (see Fig. 6-5), in order to satisfy the
thermostat setting. Do not exceed the maximum oper-
ating pressure range listed in Table 2-1.
If burner remains in Lo-Fire and does not cycle,
decrease Lo-Fire gas pressure slightly by readjusting
the Flow Control valve. Do not decrease the valve set-
ting to the extent where a noticeable burner flutter or
popping noise can be heard, as caused by flame back-
fire into the burner cup.
LOAD AUGER SWITCH (Top Auger)
The LOAD AUGER switch has three positions: ON,
OFF, and AUTO.
The ON position is recommended when initially filling
an empty dryer. With switch ON, the top auger will
operate, but the Load Timer will be de-energized.
With the switch in either AUTO or ON, the top auger
automatically starts and stops, as required, to keep the
dryer full of grain.
The AUTO switch position is the normal setting and is
used to automatically stop the dryer when the wet grain
supply is exhausted. With switch in the AUTO position,
the Load Timer will be energized whenever the load
auger is operating. If the load auger and timer operate
continuously for a period longer than the timer setting,
the timer will automatically shut down the dryer.
LOAD (Top Auger) TIMER
FUNCTION — The top auger loads the wet bin inter-
mittently, depending on when the paddle switch calls
for more grain. The Load Timer checks that the load
auger doesn't run beyond the normal time to fill the wet
grain holding bin. If, due to inadequate wet grain sup-
ply, the load auger runs longer than a normal refill time,
the Load Timer causes a dryer shutdown.
The Load Timer, located within the ASC control box, is
an automatic reset type timer. The amber LOW GRAIN
shutdown indicator will light whenever a shutdown is
caused by the Load Timer.
TIMER SETTING — To set the Load Timer, observe
the normal time required to fill the wet bin, then rotate
the front dial to set timer to the average refill time plus
several additional minutes.
NOTE: The Load Timer can be set to several time
ranges of operation. The timer is factory set in the 60-
minute range mode. With this arrangement, the no. 1
mark on the dial face equals 1/6 of the 60-minute
range or 10 minutes.
UNLOAD AUGER SWITCH
The UNLOAD AUGER switch has two positions: OFF
or AUTO.
With switch in the AUTO position, the auger runs con-
tinuously and the meter rolls are controlled by the
Meter Roll Selector Switch position (manual/off/auto).
With switch in the OFF position, the meter rolls and
auger are stopped.
The UNLOAD AUGER switch will energize the meter
roll safety circuit monitor. This monitor will cause a
dryer shutdown if meter roll rotation is not sensed for a
period longer than (3) minutes and the METER ROLL
shutdown indicator will be energized.
DRYER OPERATOR LIGHT
LIGHT OPERATION — The dryer
operator light is designed to act as
either a dryer monitor signal light, or a
night convenience light.
SWITCH POSITIONS — The three-position switch pro-
vides ON, OFF, or MONITOR operation. When the
switch is set ON, the light will stay energized even
when the dryer is shut down. When the switch is set to
MONITOR, the light will be ON only when the dryer is
operating.
NOTE: The 115V light circuit is intended for 100 watt
bulb operation. Do not install an oversize light bulb!
HOUR METER
The hour meter, located on the ASC Control Panel, is
useful in keeping track of seasonal use of the dryer and
determining when service is required. The hour meter
is non-resetting and accumulates hours only when the
upper fan is powered.
DISCHARGE SAFETY SHUTOFF SWITCH (DSS)
The DSS functions as an electrical safety shutoff switch
and a grain release hatch. Located on the discharge
tube assembly (see Fig. 3-1), this feature is designed
to automatically shut down the dryer and relieve grain
LIGHT
OFF
ON MONITOR
Fig. 3-1 Discharge assembly