Pitco Frialator 26 Gas Fryer - Manual (Page 13)

INSTALLATIONS
L20-078 Rev. 6 (05/11) 13
Note
Allow 3 to 5 minutes between flame adjustments to allow the reading to stabilize.
1.13.3 PILOT FLAME ADJUSTMENT
For manual pilots, refer to the following instructions. Perform this procedure once the pilot is
lit.
NOTE: This procedure requires a DC millivolt meter set to a scale of 0-1000 mV. Using test leads
with sharp probes will help in taking the required readings.
1. Locate the thermopile wires coming from the thermostat/limit box going to the gas
valve. The wire size decreases near the gas valve connections.
2. Using the positive (+) test probe, connect the probe to the high limit wire terminal. On
UFM systems, pierce the high limit wire insulation, with the tip of the test lead probe, at the
gas valve safety magnet connection.
3. Connect the negative (-) test probe to the pilot tubing.
4. Remove the cap screw located below the pilot tubing on the gas valve. The pilot flame
adjustment screw is recessed behind this. Turning the pilot flame adjustment screw
clockwise lowers the pilot flame and millivolt output. Turning the pilot flame adjustment
screw counter- clockwise increases the pilot flame size and millivolt output.
5. While monitoring the DC millivolt meter, rotate the pilot flame adjustment screw in the
direction necessary to achieve a reading of 400 ± 50mV.
6. Replace the cap screw.
For electronic pilots , refer to the following instructions. Perform this procedure with the pilot
lit
Note: This procedure requires the use of a DC milliammeter.
1. Connect the DC milliammeter between the flame sensor
terminal and the flame sensor lead. Observe proper polarity: if
the meter needle goes below 0, reverse the leads. The
current reading must be 0.15 mA or greater.
2. Adjust the current reading to the required level by adjusting
the pilot flame. Remove the cap screw to expose the pilot
adjustment screw. Turning the pilot adjustment screw
clockwise will decrease the size of the pilot flame and flame
sense current. Turning the pilot adjustment screw
counterclockwise will increase the pilot flame size and the
flame sense current.
3. Rotate the screw in the direction needed to achieve a reading
of 0.15 mA or greater.
4. Once the pilot flame has been adjusted properly, replace the cap screw and remove
the milliammeter.
Note
Allow 3 to 5 minutes between flame adjustments to allow the reading to stabilize.