Schwank STR-JZ Manuel du propriétaire télécharger pdf (Page 30)

SP-MSJR-BX-08C

STR-JZ Manual

RD: NOV 2006

RL: 8C

Page 26

19. SPARK IGNITION CIRCUIT

The step-up transformer in the ignition control provides spark ignition at 30,000 volts (open circuit).

To check the spark ignition circuit, proceed as follows.

Shut off gas supply to the gas control

Disconnect the ignition cable at the ignition control stud terminal to isolate the circuit from the

Spark Igniter or Igniter / Sensor

Prepare a short jumper lead, using heavily insulated wire such as ignition cable

CAUTION

In the next step, DO NOT allow fingers to touch either the stripped

end of the jumper or the stud terminal. This is a very high voltage circuit and

electrical shock can result.

Perform this test immediately upon energizing the system before the Ignition Control goes into

safety lockout and interrupts the spark circuit. Touch one end of the jumper firmly to the ignition

control GND terminal. (DO NOT remove the existing ground lead.) Slowly move the other end

of the jumper wire toward the stud terminal on the Ignition Control to establish a spark.

Pull the wire away from the stud and note the length of gap at which spark discontinues.

A spark length of 1/8 in. (3mm) or more indicates satisfactory voltage output. If no arc can be

established, or the maximum spark is less than 1/8 in. (3mm), and power to the Ignition Control

input terminals was proved, replace the Ignition Control.

Turn off the power and reconnect the Ignition Wire to the Ignition Control stud. Disconnect the

Ignition Wire from the Igniter and repeat the steps above by grounding the wire out to the tube

body this time. Turn on the power and pull the wire away from the tube and note the length of gap

at which the spark discontinues. If there is no spark or weak spark replace the Ignition Wire.

SPARK IGNITER SET UP

Please use the following diagram for checking

the Igniter gap.

If the gap is incorrect all adjustments should be

made with the GROUND PRONG/PIN ONLY!

DO NOT BEND THE IGNITER PRONG!!!!

The black bars located at the lower right corner

can be used as a guide for adjustment.

3/16”

1/4”

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Schwank STR-JZ Manuel du propriétaire Page 30