Garland JACK IN THE BOX XG36-JIB - Manual (Page 13)

Part # JIBSM08 Rev.6 (08/04/09) Page 13
UNIT INSTALLATION
continued
The gas valve, enrichment tube igniter and orifice must be
changed to that supplied by the Authorized Service Agency
for the gas you are changing to. On completion of changing
these three components, you should test all joints for leaks,
verify that the manifold pressure is adjusted to the value
given in the specification pages in this manual, and repeat
the burner air adjustment procedure. This is to be found
on the following page in this manual. When the burner is
correctly adjusted, the alternate rating plate decal must
be placed over the existing rating plates to reflect the new
category for which the grill is set.
To change from one gas type to another within the same
category (High to Low Calorific Value Natural Gas or vice
versa), change the orifice to that supplied by the Authorized
Service Agency.
Burner Air Adjustment
1. The Xpress Grill gas model burner is a stainless steel
rectangular assembly that receives forced air from a fan
mounted below the burner. The fan air quality can be
slightly adjusted if the flame quality is poor to the point
that the flame sensor will be unreliable.
2. Loosen the lock nut holding the air adjustment in place.
Slowly turn the air adjustment out (counterclockwise).
The flame should be stable (no lifting) and be 1/8” to 1/4”
predominately blue.
Igniter Adjustment
The Igniter location is factory set and does not normally
require adjustment. Adjustment should only be conducted
if the Micro-Amp (µA) reading taken by placing a Micro-
Amp (µA) meter in line between the ignition module and
the flame sense wire reads below 0.22 Microamps (µA). The
normal reading is around 0.80 (µA) to 1.5 (µA). If the reading
is low, the igniter can be a moved up or down to achieve the
proper signal. The following is a description of the process.
Note: the correct air fuel mixture and gas pressures must be
obtained before proceeding with igniter adjustment
1. Loosen the two 5\16” hex head #10 screws just outboard
of the igniter. This allows the igniter and its bracket
vertical movement.
2. With the Microamp meter in the flame sense line, and the
adjustment screws just loose enough to be able to move
the igniter assembly up and down, ignite the burner
and move the igniter up and down until the maximum
Microamp reading is achieved.
3. Tighten up the adjuster screws and the job is complete.
Igniter Inspection
The ignitor is next to the flame sensor in the burner
compartment. Normally, it should not require any
adjustment. If, however, the gap between the ignitor tip
and the burner is too great, or the ignitor seems to generate
a weak spark, replace the ignitor, and recheck the new
component for normal operation.
IGNITOR FLAME SENSOR