Moisture control tips, Burner temperatures – Grain Systems PNEG-573 User Manual

Page 41

GAS/HEAT ADJUSTMENT

main GAS SUPPLY VALVE on natu-
ral gas models, in order to reach the
THERMOSTAT setting. Do not ex-
ceed 30 PSI for propane models or
20 PSI for natural gas.

If the burner

burner

burner remains in lo-fire

and does not cycle, DECREASE the
lo-fire gas pressure slightly by read-
justing the lo-fire control valve. Note:
Do not DECREASE the pressure
settings to the extent that a notice-
able burner

burner

burner flutter or popping noise

can be heard, as caused by flame
backfire in the burner cup

burner cup

burner cup. Also

anytime the high pressure is ad-
justed the low pressure may need
adjustment.

The hi-lo fire thermostat

The drying temperature from the fan

fan

/heater

/heater unit is controlled by the HI-
LO FIRE THERMOSTAT located on
the front right hand side of the dryer.

The THERMOSTAT senses the

plenum air temperature and cycles the
burner

burner

burner from hi-fire to low-fire to main-
tain the desired drying temperature as
indicated by the THERMOSTAT.

When the heater

heater

heater is operating on

hi-fire, the burner

burner

burner is supplied with a

relatively large flow of gas through
both the HIGH PRESSURE SOLE-
NOID valve and the LOW PRES-
SURE SOLENOID valve. When op-

(LOW SPEED) needs to be
lower.

3. Red lights to the right of the set

point indicate the right speed
dial (HIGH SPEED) needs to be
higher.

1. Moisture control is in proper

range when it cycles back and
forth between the two green
lights at the 12 o'clock position
on its dial.

2. Red lights to the left of the set

point indicate the left speed dial

4. After adjustment of 30-50 bush-

els has been made change the
other speed dial to maintain a
relationship between HIGH
speed and LOW speed of 2 to 1.

MOISTURE CONTROL TIPS

STARTUP & OPERATION FOR ALL PORTABLE DRYERS

erating on lo-fire, the HIGH PRES-
SURE SOLENOID closes and only
the LOW PRESSURE SOLENOID
supplies the flow of gas to sustain
burner

burner

burner operation.

Burner cycling

When the burner

burner

burner is operating prop-

erly, it should automatically cycle at
regular intervals from hi to lo-fire, as
indicated by the corresponding pres-
sure change on the gas pressure

gas pressure

gauge

gauge. The burner

burner

burner should cycle 4

to 5 times a minute. If the burner

burner

remains on hi-fire and does not
cycle, INCREASE the gas regulator
setting on propane models, or the

BURNER TEMPERATURES

MOISTURE CONTROL SETTING

APPROXIMATE SETTINGS

1100 SERIES

Commercial Corn

180-200
190-210

Waxy Corn (estimated) Confirm with

viability testing immediately.

Drying Method

Dry/Cool

All Heat

Waxy Corn

160
160

All Heat--95 degrees

Dry/Cool--135 degrees

(COMMERCIAL CORN TO 15%)