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Troubleshooting Steps
2 - 3
Travis Industries
Gas T-Shoot Guide
19203
Pilot Tube/Orifice Blocked
If no gas is present at the pilot hood, check for blockage in the tube inside the pilot hood. Check for
gas flow by carefully listening for air flow from the pilot hood. If blockage is not found, remove the pilot
orifice and check for debris.
The pilot tube is often overlooked as a source of gas leakage. Check both pilot tube connections
after making any alteration to the pilot tube or pilot assembly (use a gas leak detector)
Pilot Hood
Pilot orifice
(inside pilot assembly)
Check for blockage here.
Remedy
Remove any blockage from pilot orifice or pilot tube by forcing air through it. Replace if necessary.
Pilot Needs Adjustment
The pilot flame should impinge the top 3/8Ó of the thermopile and thermocouple.
The pilot flame should impinge the top 3/8Ó (10
mm) of the thermopile. If it does not, you may
need to turn the pilot up.
To adjust the pilot flame, remove the cover screw (and
gasket) and turn the needle valve. Clockwise lowers
the flame while counter-clockwise raises it.
PILOT ADJ
T
O
L
PI
ON
OFF
Standard
Screwdriver
Micro (1/16Ó)
Standard
Screwdriver
AA
The cover screw and
gasket must be
replaced to prevent gas
from leaking
Cover Screw
Cover Screw Gasket
Needle Valve
3/8Ó (10 mm)
Thermopile
Pilot Hood
Thermocouple
NOTE
:
The thermopile millivolt production can be monitored while adjusting the pilot. Place
multimeter problems on the middle and lower posts of the gas control valve (see page 2-
6). Millivolt production is factory set at approximately 400. If you can not adjust the pilot to
achieve 200 millivolts, your thermopile may require replacement. See the section
"Thermopile Defective" on page 2-6 for more details.
Remedy
To adjust the pilot flame, remove the cover screw (and gasket) and turn the needle valve. Clockwise
lowers the flame while counter-clockwise raises it.
The cover screw and gasket must be replaced to prevent gas from leaking.