C24GA SERIES CONVECTION STEAMERS - SERVICE PROCEDURES AND ADJUSTMENTS
AUTOMATIC IGNITION SYSTEMS
When the main power switch is turned on and the water level is above LLCO, the ignition control module is energized with 24 volts between terminals five and six. High voltage is sent from terminal nine to the spark electrode and an output of 24 volts is sent from terminals two and three to the pilot coil in the combi- nation valve, allowing gas to flow to the pilot. The sparking will continue for 90 seconds or until the flame sensor has confirmed that an adequate pilot flame is present.
Once the pilot flame is confirmed, a 24 volt output from terminal one will be sent to the gas combination control valve.
TERMINAL | DESCRIPTION |
NO. | |
1 | Voltage (24 VAC) will be present on MV |
| terminal #1 with the pilot sensing |
| electrode sensing an adequate pilot |
| flame. This output will remain present |
| as long as the pilot flame remains |
| adequate. |
2 | Common MV/PV. |
3 | The Pilot Voltage (24 VAC) will be |
| present on terminal #3 at the instant |
| an input voltage is supplied to the |
| module. This voltage will remain |
| present on terminal #3 providing an |
| adequate pilot flame is established |
| within 90 seconds. In the event that an |
| adequate pilot flame is not established |
| within 90 seconds this output voltage |
| will drop out. |
4 | Ground (burner). |
5 | Ground (24 VAC Neutral). |
6 | 24 VAC Input. |
8 | Flame Sensor. |
9 | High Voltage to spark electrode. |
|
|
Spark Ignition Control Test
The ignition control module and ignition control module transformer are located in the electronics enclosure behind the generator base front cover.
1.Check for earth ground.
2.Check to ensure that all electrical terminal connections on the ignition control module and the igniter are clean and tight.
3.Verify that the ignition control module and the igniter have good ground wire connections. The igniter mounting bracket should have good metal to metal contact to its mounting surface.
4.Turn the main power switch on. Make sure LLCO light is on.
5.Check for 24VAC output on the ignition control module transformer.
Page 17 of 40 |
| F35425 (February 2006) |
|
