Pre start checks for all portable dryers – Grain Systems PNEG-573 User Manual

Page 25

PRE START CHECKS FOR ALL PORTABLE DRYERS

MOISTURE CONTROL

THERMOSTAT

The Maxon safety shut off valve.

ONE SPEED OPERATION

LOAD AUGER

With the grain supply SHUTOFF,
quickly bump the LOAD AUGER
switch to MANUAL, and see if the
load auger

load auger

load auger rotates clockwise as
viewed from the drive end, or coun-
terclockwise if the dryer is a front
load model. If the wet grain supply
auxiliary is wired to the dryer

To check the metering roll

metering roll

metering roll operation

turn either the LOW speed or HIGH
speed knob clockwise, and the me-
tering roll speed should INCREASE.
Turning either knob counterclockwise
will DECREASE the speed. Make

If using LP gas, make sure the tank
has plenty of fuel and that the tank
does not have a regulator mounted
to it. If using natural gas, make sure
an adequate supply is available.

If using LP gas, slowly OPEN

the main fuel supply valve

fuel supply valve

fuel supply valve at the

tank. If using natural gas, turn ON
the valve

valve

valve along the supply line.

Then, OPEN the electronic shut off

shut off

valve

valve (Maxon valve), if so equipped,
or OPEN the manual shut off valve

shut off valve

on the dryer to allow fuel flow to the
dryer. Inspect all gas lines and con-

gas lines and con-

nections

nections for possible leaks. Any

Any

gas leaks must be fixed immedi-

gas leaks must be fixed immedi-
ately!

ately!

it should also rotate in the correct
direction at this time. Turn the LOAD
AUGER switch to the AUTO (timed
shutdown) position. The top auger

top auger

and wet grain supply auxiliary

wet grain supply auxiliary

should run for one minute, and then
the dryer will shutdown leaving the
safety shutdown message OUT OF
GRAIN WARNING displayed. Press
the DRYER POWER STOP button
to reset the panel, then press the
START button.

FUEL CHECK

To check 1 SPEED operation place
the UNLOAD switch to the 1 SPEED
setting. Turn up the HIGH speed
metering roll dial until the metering

metering

rolls

rolls start rotating. The bottom au-

bottom au-

ger

ger should rotate counterclockwise
as viewed from the drive end. The
metering roll drive motor

metering roll drive motor

metering roll drive motor should
rotate clockwise as viewed from the
drive end of the gear box

gear box

gear box. If the dry

dry

grain take away auxiliary

grain take away auxiliary is wired
to the dryer, it should start and ro-
tate in the proper direction.

To check 2 SPEED operation move
the UNLOAD switch to the 2 SPEED
position, set LOW speed on 200 and
HIGH speed on 600. Slowly turn the
THERMOSTAT until the MOIS-
TURE CONTROL switch light
comes ON. The metering roll speed
is now controlled by the LOW speed
dial. Turning the THERMOSTAT the
other way until the light goes out
leaves the metering rolls

metering rolls

metering rolls controlled

by the HIGH speed dial.

METERING ROLL

OPERATION

To check the MOISTURE CON-
TROL THERMOSTAT leave the
UNLOAD switch on 1 SPEED, and
slowly turn down the MOISTURE
CONTROL THERMOSTAT. As the
setting is increased, the indicator
light should come on and the me-

me-

tering rolls

tering rolls should stop operating.
The bottom auger

bottom auger

bottom auger will stop after the

30 second clean out delay, provid-
ing that the dryer is still being held
by the MOISTURE CONTROL
THERMOSTAT. Rotate the MOIS-
TURE CONTROL THERMOSTAT
down to its minimum setting. The
light should go OFF, and the meter-

meter-

ing rolls

ing rolls should restart along with
the bottom auger

bottom auger

bottom auger if it has stopped.

TWO SPEED OPERATION