Flame Sense Current Check After 12/1/12; Electronic Ignition Control; Ignition Module Lockout - Vulcan-Hart VK Series Service Manual

VK and TR GAS FRYERS W/Wo KleenScreen PLUS - SERVICE PROCEDURES AND ADJUSTMENTS
Fig. 48
3. Remove the red flame sense wire.
4. Place one Microamp meter lead on the red wire.
5. Place the other meter lead on the terminal you
removed the red flame sense wire from.
6. Power up the fryer and have it call for heat.
7. You should receive a minimum Microamp
reading of at least 1.0 microamp.
8. If the reading is greater or equal to the value
given, then the flame sense current is within
tolerance.
9. If the reading is lower than the value given, then
troubleshoot the flame sense circuit.
NOTE: If the reading is below 0.0 microamps, reverse
the meter leads and take another reading.
FLAME SENSE CURRENT CHECK
AFTER 12/1/12
Certain procedures in this section
require electrical test or measurements while power is
applied to the machine. Exercise extreme caution at
all times. If test points are not easily accessible,
disconnect power and follow lockout / tagout
procedures, attach test equipment and reapply power
to the test.
1. Remove cover from power supply box.
F45474 (0413)
2. Locate two pins (FC- and FC+) on side of the
ignition/ blower control board.
3. Set your multi meter for Microamps and place
meter leads on two pins.
4. Restart the fryer and read the microamps as the
fryer is sparking.
NOTE: The only time you will be able to read the
microamps is when the fryer is sparking. When the
spark quits the reading will go away. You may only
have several seconds to obtain this reading.
5. The flame sense current must be at least 2.0 to
3.0 microamps, and the reading must be steady.
6. If reading is below 1.3 microamp or unsteady,
check pilot flame and electrical connections.

ELECTRONIC IGNITION CONTROL

NOTE: This procedure applies to all fryers.

Ignition Module Lockout

This happens when fryer is unable to detect flame
sense. The electrode will try to ignite one time. When
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Fig. 49