Technical Service Manual
MKG Series Gas Griddles
L22-296 Rev 0 (4/08)
Page 9
Photo 14
Photo 15
Photo 16
Photo 17
4.2
PILOT / IGNITION SYSTEM CHECK
4.2.1
Ignitor Check- Snap Action Series
•
Verify actuation of Piezo ignitor by depressing
red button on front panel, (A in Photo 1). A loud
“click” or “snap” sound should be detected.
•
Verify both terminal connections of the ignition
wire, (A, in Photo 10), and check the wire for
visible damage and electrical continuity.
Note: Front panel must be “grounded” to the
appliance to establish sufficient spark
•
Check to ensure that the Piezo ignitor, (B, in
Photo 10). is tightly mounted to the panel. A
loose connection may create an open “ground”.
•
Inspect the electrode(B), and the ceramic
insulator(E) for visible damage, See Photo 14.
•
Verify the spark gap between the electrode(B),
and the pilot hood(A), nominal gap is .090”.
•
If all parts are in good condition, check for
sufficient spark by first removing the ignition
wire,(C) from the electrode terminal.
•
Hold the “open” terminal of the ignition wire 1/8”
from front panel with insulated pliers, and
depress the red button of the Piezo ignitor.
Check for a visible spark to the panel, See
Photo 15.
•
If no spark is produced, replacement of the
Piezo ignitor may be required.
•
To Replace remove the ignition wire from the
ignitor and save. Remove the ignitor from the
panel by removing retaining nut located on the
back of the panel.
•
Install new Piezo ignitor in reverse order,
making sure to replace all hardware, and
insure all wires and gas tubing are re-
connected to original condition.
4.2.2
Spark Failure- Matchless (E & ST)
Series
•
Turn on power switch, look and listen for a
steady arc from the pilot assembly. An
unstable arc may be caused by spark leakage,
or an insufficient gas supply to the pilot.
•
Spark leakage can be due to an excessive
spark gap between the pilot(A), and the
electrode(B), nominal gap is .125”. Damaged
parts, or a loose Ignition wire(C), may result in
spark leakage also, See Photo 16.
•
Inspect all parts and wiring connections and
repair or replace as necessary.
•
An insufficient gas supply to the pilot can be
caused by a dirty or clogged pilot orifice(D), or
low gas pressure at the supply regulator.
•
Disconnect pilot tubing from pilot to access the
pilot orifice(D), clean or replace as needed.
