GSI Outdoors PNEG-630 - Manual (Page 62)

Portable Dryer Troubleshooting
61
Symptoms: Dryer runs for only a short period of
time, then a shutdown occurs. erature Operation
• This message indicates that the vaporizer on
an LP Dryer is not properly adjusted. LP
(liquified petroleum) must be vaporized
before the burner can operate properly. If
LP is being fed to the dryer it must run
through a vaporizer before it can be burned.
If the vaporizer is getting the fuel too hot it
will cause a Vapor High Limit shutdown.
• The vaporizer is located in the fan/heater
unit. It is wrap of pipe mounted inside the
fan can directly in front of the burner. It
can be seen by looking through the inspec-
tion door on the side of the burner.
• To properly adjust the vaporizer a 1/2"
wrench is needed. Knowing that the gas
can get too hot, you must feel the pipe train
before the regulator to check this tempera-
ture. This point may be very hot so be
careful while checking the temperature.
The temperature before the regulator must
be warm to the touch. This point cannot be
hot, nor can it be cold...only warm. Use the
1/2" wrench to loosen the hold down
bracket on the vaporizer. Move the vapor
izer away from the flame to cool down the
pipe train or move it closer to the flame to
make the pipe train warmer.
• The dryer will shutdown but will probably
restart as soon as the computer is reset.
This is because the high limit is an auto-
matic reset and after the dryer shuts down it
allows the pipe train to cool down.
• After the dryer is reset, it will run from a
few seconds to a few minutes and then
shutdown again. This is because the
Vapor High Limit is heating up again as
1. Dryer must be full of grain.
2. Light in the fan switch can be used exactly
like a voltmeter to test.
3. Make adjustments of the pressure in one
quarter turns.
4. Make sure the air tube in the plenum is
not plugged after sitting over the summer.
5. Check the bulb in the fan light. It is a 12
volt bulb.
Hints
• If all the above fails to work then remove
the two wires while blowing into the air
tube. Blowing into the switch is the same as
having air pressure in the plenum. You
should have an open circuit until you blow
into the switch, then it should close. If the
switch does not close try adjusting it, or
replace it with a known good one.
Troubleshooting Tips
Vapor High Temperature
Troubleshooting: Vapor High
Temperature