Operational Flow Chart
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| Starting | Running | SHUT DOWN PHASE | |||||||
| Operating Mode | System Check | Preheat | Ignition | Preheat 2nd Attempt | Ignition 2nd Attempt | Controlled Heating | After Glow | Cool Down | Off or Standby |
| Coolant Pump | OFF | ON | ON | ON | ON | ON | ON | ON | OFF (ON in Standby) |
| Combustion Air Fan | ON Momentary |
ON | ON | OFF | ON | ON | ON | ON | OFF |
| Glow Pin | OFF | ON | ON | ON | ON | OFF | ON | OFF | OFF |
| Fuel Metering Pump | OFF | OFF | ON | OFF | ON | ON | OFF | OFF | OFF |
| Operating indicator Light | ON | ON | ON | ON | ON | ON | OFF | OFF | OFF |
| Fan for the Vehicle | ON Momentary |
OFF | OFF | OFF | OFF | ON | ON | ON | OFF |
| Flame Monitor | ON | ON | ON | ON | ON | OFF | OFF | OFF | OFF |
| Time | 1-3 sec. | 60 sec. to 140 sec. | <90 sec. | 80 sec. | <90 sec. | 20 sec. | 2.5 min. | ||
Note: If the coolant temperature exceeds 86 °C (187 °F) during the controlled heating cycle the machine preheater will shutdown. The machine preheater will automatically restart in the high heat mode once the coolant temperature reaches 75 °C (167 °F).
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