Airstream PNEG-339 User Manual
I R S T R E A M
A
1 9 9 7
R A I N
G
O N D I T I O N I N G
C
Y S T E M S
S
DRYER OPERATION
A N D S E R V I C E M A N U A L
PNEG-339
1100 SERIES SINGLE FAN
PORTABLE DRYER
MODELS
1
2
1100 SERIES DRYER OPERATION AND SERVICE
TABLE OF CONTENTS
Warranty.......................................................................................................................4
Safety First...................................................................................................................5
Safety Alert Decals.......................................................................................................6
Safety Precautions.......................................................................................................7
Dryer Control Panel Featuring The Electronic Monitoring Control System.......................8
Safety Circuit Shutdown Messages......................................................................13
Dryer Pre Start Checks...............................................................................................14
Pre Season Inspection..........................................................................................14
Dryer Start Up...................................................................................................................18
Continuous Flow And Continuous Batch Start Up Procedure..............................18
Continuous Flow Metering Roll Settings...............................................................19
Continuous Batch Metering Roll And Timer Settings................................................22
1100 Series Dryer Service Guide.....................................................................................23
Seasonal Inspection And Service.........................................................................24
Suggested Lubricants..........................................................................................25
Fan Propellor Removal And Installation...............................................................26
Fan Motor Removal And Installation....................................................................27
Heater Parts Removal And Installation................................................................28
Metering Roll Servicing........................................................................................29
How To Determine A Metering Roll Problem........................................................30
Wiring Diagrams...................................................................................................31
Trouble Analysis Procedure...................................................................................41
Quick Reference Guide........................................................................................46
Notes...................................................................................................................47
3
WARRANTY
THE GSI GROUP, INC. ("GSI") WARRANTS ALL PRODUCTS MANUFACTURED BY GSI TO BE FREE OF
DEFECTS IN MATERIAL AND WORKMANSHIP UNDER NORMAL USAGE AND CONDITIONS FOR A PERIOD OF TWENTY-FOUR MONTHS AFTER RETAIL SALE TO THE ORIGINAL END USER OF SUCH PRODUCTS. GSI'S ONLY OBLIGATION IS, AND PURCHASER'S SOLE REMEDY SHALL BE FOR GSI, TO REPAIR OR REPLACE, AT GSI'S OPTION AND EXPENSE, PRODUCTS THAT, IN GSI'S SOLE JUDGMENT,
CONTAIN A MATERIAL DEFECT DUE TO MATERIALS OR WORKMANSHIP. ALL DELIVERY AND SHIPMENT CHARGES TO AND FROM GSI'S FACTORY WILL BE PURCHASER'S RESPONSIBILITY. EXPENSES
INCURRED BY OR ON BEHALF OF THE PURCHASER WITHOUT PRIOR WRITTEN AUTHORIZATION
FROM AN AUTHORIZED EMPLOYEE OF GSI SHALL BE THE SOLE RESPONSIBILITY OF THE PURCHASER.
EXCEPT FOR THE ABOVE STATED EXPRESS LIMITED WARRANTIES, GSI MAKES NO WARRANTY OF
ANY KIND, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE IN CONNECTION WITH (i) PRODUCT MANUFACTURED OR SOLD BY GSI OR (ii) ANY ADVICE, INSTRUCTION, RECOMMENDATION OR
SUGGESTION PROVIDED BY AN AGENT, REPRESENTATIVE OR EMPLOYEE OF GSI REGARDING OR
RELATED TO THE CONFIGURATION, INSTALLATION, LAYOUT, SUITABILITY FOR A PARTICULAR PURPOSE, OR DESIGN OF SUCH PRODUCT OR PRODUCTS.
IN NO EVENT SHALL GSI BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOSS OF ANTICIPATED PROFITS OR BENEFITS.
PURCHASER'S SOLE AND EXCLUSIVE REMEDY SHALL BE LIMITED TO THAT STATED ABOVE, WHICH
SHALL NOT EXCEED THE AMOUNT PAID FOR THE PRODUCT PURCHASED. THIS WARRANTY IS NOT
TRANSFERABLE AND APPLIES ONLY TO THE ORIGINAL PURCHASER. GSI SHALL HAVE NO OBLIGATION OR RESPONSIBILITY FOR ANY REPRESENTATIVE OR WARRANTIES MADE BY OR ON BEHALF
OF ANY DEALER, AGENT OR DISTRIBUTOR OF GSI.
GSI ASSUMES NO RESPONSIBILITY FOR FIELD MODIFICATIONS OR ERECTION DEFECTS WHICH
CREATE STRUCTURAL OR STORAGE QUALITY PROBLEMS. MODIFICATIONS TO THE PRODUCT NOT
SPECIFICALLY COVERED BY THE CONTENTS OF THIS MANUAL WILL NULLIFY ANY PRODUCT WARRANTY THAT MIGHT HAVE BEEN OTHERWISE AVAILABLE.
THE FOREGOING WARRANTY SHALL NOT COVER PRODUCTS OR PARTS WHICH HAVE BEEN
DAMAGED BY NEGLIGENT USE, MISUSE, ALTERATION OR ACCIDENT. THIS WARRANTY COVERS
ONLY PRODUCTS MANUFACTURED BY GSI. THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL
OTHER WARRANTIES EXPRESS OR IMPLIED. GSI RESERVES THE RIGHT TO MAKE DESIGN OR SPECIFICATION CHANGES AT ANY TIME.
PRIOR TO INSTALLATION, PURCHASER HAS THE RESPONSIBILITY TO RESEARCH AND COMPLY WITH ALL FEDERAL, STATE AND LOCAL CODES WHICH MAY APPLY TO THE LOCATION AND
INSTALLATION.
4
ROOF WARNING, OPERATION & SAFETY
ROOF DAMAGE WARNING AND DISCLAIMER
GSI DOES NOT WARRANT ANY ROOF DAMAGE CAUSED
BY EXCESSIVE VACUUM OR INTERNAL PRESSURE FROM
FANS OR OTHER AIR MOVING SYSTEMS. ADEQUATE
VENTILATION AND/OR "MAKEUP AIR" DEVICES SHOULD
BE PROVIDED FOR ALL POWERED AIR HANDLING SYSTEMS. GSI DOES NOT RECOMMEND THE USE OF DOWNWARD FLOW SYSTEMS (SUCTION). SEVERE ROOF DAMAGE CAN RESULT FROM ANY BLOCKAGE OF AIR PASSAGES. RUNNING FANS DURING HIGH HUMIDITY/COLD
WEATHER CONDITIONS CAN CAUSE AIR EXHAUST OR
INTAKE PORTS TO FREEZE.
Thank you for choosing a GSI/
Airstream product. It is designed
to give excellent performance
and service for many years.
This manual describes the
operation and service for all standard 1100 Series one fan grain
dryers. These models are available for liquid propane or natural gas fuel supply, with either
single phase 230
The symbol shown is used to call
your attention to instructions concerning your personal safety. Watch
for this symbol; it points out important safety precautions. It means
"ATTENTION", "WARNING", "CAUTION", and "DANGER". Read the
message and be cautious to the
possibility of personal injury or
death.
DRYER OPERATION
volt, or three phase 220 or 440
volt electrical power.
The principal concern of the GSI
Group, Inc. ("GSI") is your safety and
the safety of others associated with
grain handling equipment. This
manual is written to help you understand safe operating procedures,
and some of the problems that may
be encountered by the operator or
other personnel.
SAFETY ALERT SYMBOL
WARNING! BE ALERT!
Personnel operating or working around
electric fans should read this manual.
This manual must be delivered with the
equipment to its owner. Failure to read
this manual and its safety instructions is
a misuse of the equipment.
As owner and/or operator, it is
your responsibility to know what
requirements, hazards and precautions exist, and to inform all
personnel associated with the
equipment, or who are in the dryer
area. Avoid any alterations to the
equipment. Such alterations may
produce a very dangerous situation, where serious injury or death
may occur.
5
SAFETY ALERT DECALS
Three decals displayed on all Airstream Dryers. Belt drives, chain driven meter rolls
and combustible fuels must be treated with caution.
6
SAFETY PRECAUTIONS
1. Read and understand the operating manual before trying to operate the
dryer.
2. Never operate the dryer while the guards are removed.
3. Power supply should be OFF for service of electrical components.
Use CAUTION in checking voltage or other procedures requiring power
to be ON.
4. Check for gas leaks at all gas pipe connections. If any leaks are
detected, do not operate dryer. Shut down and repair before further operation.
5. Never attempt to operate the dryer by jumping or otherwise bypassing
any safety devices on the unit.
6. Set pressure regulator to avoid excessive gas pressure applied to
burner during ignition and
operating procedures. Do not exceed maxi
ing temperature.
7. Keep the dryer clean. Do not allow fine material to accumulate in
the plenum chamber.
8.
Keep auger drive belts tight
when burner is in operation. See chart for
mum recommended dry-
enough to prevent slippage.
USE CAUTION
IN THE OPERATION
OF THIS EQUIPMENT
The design and manufacture of this
dryer is directed toward operator
safety. However, the very nature of
a grain dryer having a gas burner,
high voltage electrical equipment
and high speed rotating parts, does
present a hazard to personnel,
which can not be completely safeguarded against, without interfering
with efficient operation and reasonable access to components.
Use extreme caution in working
around high speed fans, gas-fired
heaters, augers and auxiliary conveyors, which may start without
warning when the dryer is operating
on automatic control.
KEEP THE DRYER CLEAN
DO NOT ALLOW FINE
9. Use CAUTION in working around high speed fans, gas burners,
augers and auxiliary conveyors which START AUTOMATICALLY.
10. Do not operate in any area where combustible material will be drawn into
the fan.
11. Before attempting to remove and reinstall any propellor, make certain
to read the recommended procedure listed within the servicing section
of the manual.
12. Be certain that capacities of auxiliary conveyors are matched to dryer
auger capacities.
13. Clean grain is easier to dry. Fine material increases resistance to airflow
and requires removal of extra moisture.
READ THESE INSTRUCTIONS
BEFORE OPERATION AND SERVICE
SAVE FOR FUTURE REFERENCE
MATERIAL TO ACCUMULATE
IN THE PLENUM CHAMBER
OR SURROUNDING THE
OUTSIDE OF THE DRYER
Continued safe, dependable operation of automatic equipment depends, to a great degree, upon the
owner. For a safe and dependable
drying system, follow the recommendations within this manual, and
make it a practice to regularly inspect the operation of the unit for any
developing problems or unsafe conditions.
Take special note of the safety
precautions listed above before attempting to operate the dryer.
7
DRYER CONTROL PANEL
Figure 1: The grain dryer control panel with the Electronic Monitoring Control System in the upper right panel.
DRYER CONTROL PANEL FEATURING
THE ELECTRONIC MONITORING CONTROL SYSTEM
The control panel provides easy access to gauges and controls, and the
ILLUMINATED SWITCHES are a
quick reference for every operating
function. The patent pending Elec-
tronic Monitoring Control System
is computerized and gives instant
8
information about dryer operation.
MOISTURE CONTROL
THERMOSTAT (1)
This electronic thermostat controls the moisture level of discharged grain by sensing grain
column temperature.
MOISTURE CONTROL
SWITCH (2)
This switch turns the power ON or
OFF to the moisture control ther-
mostat. It lights up when the grain
column temperature is below the
thermostat set point.
DRYER CONTROL PANEL
CONTROL POWER
SWITCH (3)
The power to the Electronic Monitoring Control System is turned
ON or OFF with this switch.
OUTSIDE LIGHT (4)
The dryer service light is turned
ON or OFF here. It also may be
set on AUTO, which turns the light
on while the dryer is running, and
off if a shutdown occurs.
DRYING MODE SWITCH (5)
This is used to select STAGED
BATCH or CONTINUOUS FLOW
drying. The switch will light only after the Electronic Monitoring Con-
trol System has been turned ON,
the safety circuit is okay and the
RESET button has been pressed.
LOAD AUGER SWITCH (6)
This is used to select the operation of the load auger. In both the
AUTO and MANUAL position the
load auger will operate if the dryer
is low on grain, and will automatically shut off when the dryer is full.
In the AUTO position only, the
dryer will shut down after a predetermined period of time set on the
OUT OF GRAIN TIMER, or if grain
flow is interrupted to the dryer. The
switch will light whenever the load
auger is operating.
Note: When this switch is set
to AUTO or MANUAL it also controls the operation of any auxiliary
load equipment being utilized,
such as an auxiliary auger or conveyor.
FAN SWITCH (7)
The fan is turned ON or OFF with
this switch. The ON position operates the fan continuously during
STAGED BATCH and CONTINUOUS FLOW modes. The AUTO position operates the fan in STAGED
BATCH during the dry and cool
cycle. The switch will light up whenever the airflow switch is sensing
airflow and the dryer is full of grain.
HEATER SWITCH (8)
This switch is used to turn the
burner ON or OFF. The AUTO position operates the burner in
STAGED BATCH during the dry
cycle. The ON position will operate
the burner only when the fan is running. The switch will light up when
the flame sensor detects the flame.
UNLOAD SWITCH (9)
The UNLOAD switch turns the metering rolls and discharge auger
ON or OFF, and selects the operation of the metering rolls.
• In the 2 SPEED position if the
MOISTURE CONTROL switch is
ON, and the DRYING MODE
switch is turned to CONTINUOUS
FLOW, the METERING ROLL
SPEED will alternate between the
HIGH speed metering roll potentiometer setting and the LOW
speed metering roll potentiometer
setting depending on the control
signal from the MOISTURE CONTROL THERMOSTAT. The dis-
charge auger will operate continuously.
• In the 1 SPEED position, if the
MOISTURE CONTROL switch is
ON, and the DRYING MODE
switch is turned to CONTINUOUS
FLOW, the METERING ROLL
SPEED will operate at the HIGH
speed metering roll potentiometer
setting or turn OFF depending on
the control signal from the MOISTURE CONTROL THERMOSTAT. The discharge auger will
operate whenever the metering
rolls are operating.
• In both the 1 SPEED or the 2
SPEED position, if the MOISTURE CONTROL THERMOSTAT
is OFF, and the DRYING MODE
switch is turned to CONTINUOUS
FLOW, the METERING ROLL
SPEED can be manually controlled by adjusting the HIGH
speed metering roll potentiometer.
The discharge auger will operate
continuously.
• If the DRYING MODE switch is
turned to STAGED BATCH, the
UNLOAD switch should be set to
the 1 SPEED position. The dis-
charge auger and metering rolls
will only operate during the unload
cycle of the staged batch operation, and the METERING ROLL
SPEED is adjusted using the
HIGH speed metering roll potentiometer.
Note: When this switch is set to
AUTO or MANUAL it also controls
the operation of any auxiliary load
equipment being utilized, such as
an auxiliary auger or conveyor.
9
DRYER CONTROL PANEL
LOW SPEED METERING
ROLL POTENTIOMETER (10)
This is used to adjust the LOW
speed of the metering roll when the
2 SPEED and MOISTURE CONTROL THERMOSTAT are in use.
HIGH SPEED METERING
ROLL POTENTIOMETER (11)
This is used to:
• Set the HIGH speed of the meter-
ing roll when the 2 SPEED automatic moisture control feature of
the dryer is utilized.
• Set the speed of the metering
rolls when the 1 SPEED auto-
matic moisture control feature of
the dryer is utilized.
• Set the speed of the metering
rolls during continuous flow operation when the moisture control
is not used.
• Set the rate of grain discharge from
the dryer during the unload cycle of
staged batch dryer operation.
DRYER POWER
START SWITCH (12)
This switch starts and operates the
dryer based on switch settings. If
other switch settings are in the OFF
position, individual dryer compo-
nents can be operated by turning the
DRYING MODE switch to CONTINUOUS FLOW, pressing the
DRYER POWER START button and
then turning ON the desired dryer
component.
DRYER POWER
STOP SWITCH (13)
This switch stops all dryer functions. If an automatic dryer shutdown occurs, first determine and
correct the cause of the shutdown.
Then, press the DRYER POWER
STOP button to reset the dryer before restarting.
10
The Airstream Dryer Control Panel.
DRYER CONTROL PANEL
ELECTRONIC
MONITORING CONTROL
SYSTEM (14)
The Electronic Monitoring Control
System (Figure 2) controls all tim-
ing functions and safety circuit
checks. It is designed to simplify
dryer operation by providing printed
messages and warnings on its liquid crystal display (LCD).
TURNING ON THE
ELECTRONIC
MONITORING CONTROL
SYSTEM USING THE
RESET BUTTON (15)
Turn the CONTROL POWER switch
to ON. The monitor will display a
copyright message and model number, total running time in hours and
minutes and the current time and
date. To activate the controller press
the RESET button.
SETTING THE DRY (16),
COOL (17) AND UNLOAD
(18) BATCH TIMERS
These switches are used to set the
cycle times in the STAGED BATCH
DRYING MODE only. The DRYING
MODE switch must be in the
STAGED BATCH position. The current settings on these three TIMERS
are displayed directly above each
TIMER button. To change the setting of these TIMERS follow these
instructions:
1. Press the DRY, COOL or UNLOAD TIMER button.
2. Press the MODIFY button.
3. Press the INCREASE or DECREASE button to adjust the
settings.
4. Press the ENTER button.
During operation the remaining
time on each TIMER is displayed on
the screen. If the power goes out or
if the dryer is stopped, these times
are saved by the controller. When
the dryer is restarted the TIMERS
will continue timing down. The TIMERS will return to their initial settings
by pressing the RESET button.
SETTING THE OUT OF
GRAIN TIMER (19)
If the dryer runs out of grain while
the LOAD AUGER switch is in the
AUTO position, the OUT OF GRAIN
TIMER automatically shuts OFF the
dryer after the period of time preset
on the TIMER. When pressed, the
display will show the amount of time
left on the TIMER and the percentage of time the last load expended.
A second screen will appear showing the TIMER'S setting and will allow the operator to modify it as described for setting the BATCH TIMERS.
Figure 2: The Airtream Electronic Monitoring Control System
11
DRYER CONTROL PANEL
The Airstream Electronic Monitoring Control System showing different LCD displays.
SETTING THE LOAD (20)
AND UNLOAD (21) DELAYS
The LOAD DELAY is used to delay
the starting of the load auger when
the dryer is unloading to prevent the
load auger from starting and stopping. The UNLOAD DELAY is used
to control the amount of time the un-
load auger runs after the metering
rolls stop to allow for auger
cleanout. Both the LOAD and UNLOAD DELAYS are set using the
same procedure as the TIMERS.
The AUX1 and AUX 2 DELAYS are
presently not being used.
UTILIZING THE
BUSHEL COUNTER (22)
When operating the dryer the LCD
display will show the DRYER MODE
OF OPERATION on the first line, the
BUSHELS PER HOUR or the METERING ROLL RPM on the second
line and the TOTAL BUSHELS dried
on the third line. By pressing the
BPH/RPM/TOTAL BU button the
second line will alternate between
the METERING ROLL RPM's or the
BUSHEL PER HOUR rate. The TOTAL BUSHELS DRIED reading is
the total since the bushel counter
was last reset. To reset the
BUSHEL COUNTER, press and
hold the RESET button for five seconds. Press the ENTER button
through the date and time settings
and then follow the instructions displayed on the LCD for resetting the
counter.
In the STAGED BATCH DRYING MODE the first line of the LCD
display tells which TIMER is being
used, and the second line switches
between TOTAL BATCHES, UNLOAD RPM or TOTAL BUSHELS.
The third line indicates TOTAL DRY
TIME and the fourth line is TIME
REMAINING on the TIMERS.
DRYER SAFETY CIRCUIT
The Electronic Monitoring Control
System continuously checks all
safety circuits on the dryer, and will
automatically shut the dryer down
should a problem occur. The cause
of the dryer shutdown will be displayed on the LCD display, and a
beeper will sound on the controller.
To restart the dryer after a safety
shutdown, first correct the reason for
the shutdown, and then press the
DRYER POWER STOP button to reset the circuit. Press the START
button.
The Electronic Monitoring
Control System stores in its
memory the time, date and cause for
the last 25 dryer safety shutdowns.
To review this information hold the
RESET button in for five seconds.
The procedure for reviewing the
safety circuit shutdown log will be
displayed on the LCD display.
12
DRYER CONTROL PANEL
SAFETY CIRCUIT SHUTDOWN MESSAGES
BURNER VAPOR HIGH
TEMPERATURE
The LP gas vapor temperature sensor located in the gas pipe train
downstream from the vaporizer, has
opened indicating that the vaporizor
is running too hot and must be readjusted. This sensor is set at 200°F
and automatically resets itself when
cool.
BURNER WARNING FLAME
NOT DETECTED
The flame sensor has failed to detect a burner flame indicating that the
burner has failed to light, there is a
problem with the flame sensing circuitry or the dryer is not getting
burner fuel.
FAN HOUSING HIGH
TEMPERATURE
The temperature high limit located
on the fan/burner housing has
opened, indicating an over temperature condition has occurred towards
the rear of the fan/heater housing.
This control is set at 200°F and must
be manually reset.
GRAIN DISCHARGE
WARNING
The lid on the grain discharge box
has opened, indicating that grain is
not being taken away fast enough
at the discharge box.
LOWER ADJUSTABLE
GRAIN HIGH
TEMPERATURE
An over temperature condition has
occurred in the right side (left and
right as viewed from behind the
dryer) grain column causing the
control to shut down the dryer. This
control is set at 210°F and automatically resets itself when cool.
LOWER FIXED GRAIN
HIGH TEMPERATURE
An over temperature condition has
occurred in the left side (left and
right as viewed from behind the
dryer) grain column causing the
control to shutdown the dryer. This
control is set at 210°F and automatically resets itself when cool.
MOTOR OVERLOAD
One of the thermal overloads on
either the fan, load, unload or aux-
iliary motors has opened, indicating an overcurrent condition. The
overloads must be manually reset.
OUT OF GRAIN
WARNING/UNLOAD
CLEANOUT
The dryer has run low on grain, and
the OUT OF GRAIN TIMER has
timed out, shutting the dryer down.
The unload auger will clean out the
dryer if in continuous flow operation.
METERING ROLL DRIVE
SYSTEM FAILURE
The metering roll drive system has
failed to turn. A broken chain or
jammed metering roll is a possibility.
RIGHT METERING ROLL
FAILURE
The right (as viewed from behind the
dryer) metering roll has stopped turning, or the sensor has been damaged.
LEFT METERING ROLL
FAILURE
The left (as viewed from behind the
dryer) metering roll has stopped turn-
ing, or the sensor has been damaged.
12 VOLT POWER
SUPPLY WARNING
The right circuit breaker on the input/output board has tripped.
AUXILIARY SAFETY
SHUTDOWN
A shutdown has occurred due to an
auxiliary installed safety feature.
BURNER SHUTDOWN
LOSS OF AIRFLOW
The contacts in the air switch have
opened due to insufficient airflow for
the burner to operate.
FAN FAILURE
NO AIRFLOW
The contacts in the air switch have
opened due to the fan not turning, or
the air switch may need adjustment.
L1 VOLTAGE LOST
The left circuit breaker located on
the input/output board of the Elec-
tronic Monitoring Control System
has tripped, or one of the hardware
timers has shut down the dryer.
PLENUM HIGH
TEMPERATURE
An over temperature condition has
occurred inside the dryer plenum.
This control is a 300°F limit and automatically resets itself when cool.
FAN CANNOT START
CHECK AIR SWITCH
The air switch contacts have closed
prior to the fan starting, indicating a
freewheeling blade or improper setting of the air switch.
13
Before the dryer is filled, thoroughly
inspect the unit and check the operation of the dryer as follows.
INSPECT THE METERING
ROLLS
Open all metering roll access
doors and inspect each compart-
ment for any bolts, nuts or other foreign material, that may cause possible jamming of the metering rolls.
BEFORE ATTEMPTING TO
OPERATE THE DRYER MAKE
DRYER PRE START CHECKS
PRE SEASON INSPECTION
The Maxon safety shut off valve.
SURE ALL SAFETY SHIELDS
ARE IN PLACE, ALL BOTTOM
CLEANOUT AND REAR
ACCESS DOORS ARE CLOSED
AND ALL PERSONNEL ARE
CLEAR OF THE DRYER
SET CONTROL SWITCHES
Moisture Control Switch-ON
Moisture Control Thermostat-MAXI-
MUM TEMPERATURE
Load Switch-OFF
Unload Switch-OFF
Fan Switch-OFF
Burner Switch-OFF
Out of Grain Timer-8 MINUTE
Load Delay-30 SECONDS
Unload Delay-30 SECONDS
Metering Roll Speed-LOW AND
HIGH SPEED SETTINGS PUT
ON ZERO
Dry Timer-60 MINUTE
Cool timer-20 MINUTE
Unload timer-10 SECONDS
Mode Switch-CONTINUOUS FLOW
14
ELECTRICAL POWER
Turn ON the electrical power supply to the dryer, set all circuit breakers to ON, including the safety disconnect handle mounted on front
of the dryer's power panel.
CONTROL POWER
SWITCH
Turn the CONTROL POWER switch
to ON. The switch will light up. A
copyright message, model number,
total running time in hours and minutes, current date and time will appear. At this point the controller will
lock out all other dryer functions.
Once the date and time appear,
press RESET and the dryer will perform its safety circuit check. If a fault
is found, the cause will be displayed
on the LCD. If all are found safe, the
controller will supply power to the
electronic fuel shut- off valve (if
so equipped) and the DRYING
MODE switch will light up, indicating
that the dryer is ready to be started.
POWER START BUTTON
Push the DRYER START button,
and all the selector switches on the
control panel will be activated.
FUEL CHECK
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 at the
tank. If using natural, gas turn ON
the valve along the supply line.
Then, OPEN the electronic shut off
valve (Maxon valve), if so equipped,
or OPEN the manual shut off valve
on the dryer to allow fuel flow to the
dryer. Inspect all gas lines and con-
nections for possible leaks.
Any gas leaks need to be
fixed immediately!
The metering roll access area.
LOAD AUGER
With the grain supply SHUT OFF,
quickly bump the LOAD AUGER
switch to MANUAL, and see if the
load auger rotates clockwise as
viewed from the drive end, or counterclockwise if the dryer is a front
load model. If the wet grain supply
auxiliary is wired to the dryer it
should also rotate in the correct direction at this time. Turn the LOAD
AUGER switch to the AUTO position. The top auger and wet grain
supply auxiliary should run for one
minute, and then the dryer will shut
down leaving the safety shutdown
DRYER PRE START CHECKS
message (out of grain warning) displayed. Press the DRYER POWER
STOP button to reset the panel, then
press the START button.
ONE SPEED OPERATION
To check 1 speed operation place
the UNLOAD switch in the 1 SPEED
setting. Turn up the HIGH SPEED
METERING ROLL DIAL until the
metering rolls start rotating. The
bottom auger should rotate coun-
terclockwise as viewed from the
drive end. The metering roll drive
motor should rotate clockwise as
viewed from the drive end of the
gear box. If the dry grain take away
auxiliary is wired to the dryer, it
should start and rotate in the proper
direction.
MOISTURE CONTROL
THERMOSTAT
To check the MOISTURE CONTROL THERMOSTAT leave the
UNLOADING switch on 1 SPEED,
and slowly turn down the MOISTURE CONTROL THERMOSTAT.
As the setting is decreased, the indicator light should come on and the
metering rolls should stop operating. The bottom auger will stop after the 30 second clean out delay,
providing that the dryer is still being
held by the MOISTURE CONTROL
THERMOSTAT. Rotate the MOISTURE CONTROL THERMOSTAT
up to its maximum setting. The light
should go off, and the metering
rolls should restart along with the
bottom auger if it has stopped.
To check 2 SPEED operation
move the switch to the 2 SPEED position, set LOW speed on 200 and
HIGH speed on 600. Slowly turn the
thermostat until the MOISTURE
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 now
leaves the metering rolls controlled
by the HIGH SPEED DIAL.
METERING ROLL
OPERATION
To check the metering roll operation
turn either the LOW speed or HIGH
speed knob clockwise, and the ME-
15
DRYER PRE START CHECKS
TERING ROLL SPEED should increase. Turning either knob counterclockwise will decrease the
speed. Make sure the drive chain
tension is properly adjusted and all
sections of the metering rolls rotate. Turn the UNLOAD switch OFF
after these checks are complete.
The bottom auger will continue to
run for 30 seconds after the switch
is turned OFF to allow for cleanout.
FAN SWITCH
Bump the FAN switch and observe
the fan rotation. The fan should run
counterclockwise. Sometimes on
three phase models all motors will
run backwards. They can easily be
reversed by interchanging the two
of three power supply wires. Reverse the two outside wires, L1 and
L3, and leave the middle one in the
same position.
Note: If the dryer is empty, the
burner will not operate. The fans
cannot create enough static pressure to engage the air switch. You
will receive a loss of airflow message.
ignite after a short purge delay of approximately 10 seconds. Gas pressure should be shown on the gauge.
At this time adjust the BURNER
HIGH-LOW FIRE THERMOSTAT to
200°F, causing the burner to operate on high-fire. The thermostat is
located on the front left side of the
dryer. Observe the gas pressure on
gauge, and turn the thermostat to
its MINIMUM SETTING, causing the
burner to cycle into low-fire. As the
burner thermostat is turned down
the gas pressure should also show
a noticeable drop, indicating that the
high-fire solenoid is closed and the
burner is being supplied with less
gas through the low-fire control
valve. At this time set the high-
fire and low-fire pressure settings.
Use the PRESSURE REGULATOR
for high-fire and the BALL VALVE
for low-fire. The thermostat should
cycle between high and low, approximately 4 to 5 times per minute.
Approximate settings should be:
LP Gas High-Fire 6-15 lbs.
Low-Fire 2-6 lbs.
Natural Gas High-Fire 6-10 lbs.
Low-Fire 1-3 lbs.
If the burner remains on high-
fire and does not cycle, INCREASE
the regulator setting on the propane
models, or the supply valve on the
natural gas models in order to reach
the thermostat setting. If the
burner remains in low-fire and does
not cycle, slightly DECREASE gas
7
5
BURNER SAFETY
To check the burner safety function,
first make sure the main GAS
VALVE is OFF. Turn the FAN switch
ON and allow the fan to start. Then,
turn the HEATER switch ON. The
dryer will shut down after 20 seconds.
The safety message, "Burner 1 warning flame not detected" will appear.
BURNER TEST FIRE
START the fan, and then turn the
HEATER switch to ON. Turn ON the
fuel supply, and the burner should
16
3
4
The dryer fan and heater controls featuring: 1-pressure regulator, 2-low-fire
control valve, 3-high pressure solenoid, 4-low pressure solenoid, 5-high-
low fire thermostat (assembly includes thermometer), 6-fuel supply line, 7-
LP solenoid or supply ball valve(NG) and 8-air pressure switch.
2
1
8
6
DRYER PRE START CHECKS
All dryer functions should be checked before operation each season.
pressure with the LOW-FIRE CONTROL VALVE. If the gas pressure
is decreased too much a popping or
fluttering sound will be heard. Also,
anytime the high pressure side is
adjusted the low pressure side
needs to be checked.
STAGED BATCH CHECK
To check the staged batch operation, turn the CONTROL POWER
switch to the ON position. Press the
RESET button, OPEN the main
FUEL SUPPLY VALVE at the tank
on an LP dryer or valve in the fuel
supply line on a natural gas dryer.
Turn the DRYING MODE switch to
the STAGED BATCH position.Turn
ON the electric SHUT OFF
VALVE to allow fuel flow to the
dryer, if so equipped. Turn the
LOAD switch to AUTO and UNLOAD switch to 1 SPEED. Push
the DRYER POWER START button and the controller will sequentially start all dryer components in
their proper order. If any switches
are not in their correct position for
staged batch operation, the dryer
will indicate improper switch position, and will not start until the
switches are in the proper position.
After starting, all batch timers will
time down in sequence. When the
unload cycle is complete the timers will automatically reset to their
original settings, and start the dry
timer again.
DRYER SHUTDOWN
To shutdown the dryer, first CLOSE
the FUEL SUPPLY VALVE at the
tank or valve along the fuel line. If
the burner is operating, let the dryer
run out of fuel, and it will shutdown
automatically due to loss of flame.
CLOSE the FUEL VALVE at the
dryer, and press the DRYER
POWER STOP button. Turn OFF
the safety disconnect handle on
the front of the power box, and turn
OFF the main POWER to the dryer.
EMERGENCY
In case of emergency push the dryer
POWER STOP button. The fan,
burner and all augers will stop immediately.
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