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Component Identification
j1. - Main Control Panel On The AMU NOTE: Component size and layout may vary
Relays Various switching of control circuits.
PLC (Carel Controller) Controls fan on/off, burner on/off, and cure logic.
Power Distribution Splits the main power into branches
Control Transformer Lowers incoming voltage to 120vac
Terminal Blocks Field wiring connections land here.
Fuses/Branch Circuit Protection Protection for the power circuit devices (VFDs, Control Transformer, Lights, Etc.)
Transformer Provides 24vac to various components.
Flame Controller . (Fire Eye) Monitors flame condition and controls
gas blocking valves/pilot.
Service Switches . Labeled SW5 & SW6. Allows local control of the unit so that you don’t have to go to the remote control panel to start/stop.
Exhaust Fan VFD Controls speed of exhaust fan(s)
High Temp Limit . Shuts off the burner if the temperature is too high. On cure models, this is digital.
Booth Lights Contactor Relay to turn booth lights on/off.
Air Pressure Switches . Prevents combustion if air pressure across the burner is too low or too high.
AMU Fan VFD Controls speed of AMU fan
SW5 = Fans on/off SW6 = Burner on/off
Note: Switches should be off for normal operation. Note: Switches may be located in other area of the panel such as on the terminal strip DIN rail.
Exhaust Fan Overloads Units that control more than 1 exhaust fan will have an individual overload for each fan.
Reset Button Resets the overload to allow the exhaust fans to run again. Check exhaust fan amperage after reset to ensure the amperage does not exceed the motor ’ s FLA rating.
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