Safety features
For operator safety, compressed air may only enter the spray gun when the booth is in Spray mode, the
fans are operating, light covers are in place, airflow switches are satisfied, and the doors are closed. The
following safety features are included with every booth:
• Fire Suppression Interlock: Two types of fire protection interlock are provided. Type 1 is typically used
with a dry chemical type system that will shut down the ventilation system in the event of a fire or fault.
Type 2 interlock is typically used on a wet system and will lock out the spray permissive signal to prevent
any spraying, but keep the ventilation system in operation. Local Codes and AHJ must provide guidance
on the interlock type.
• Lights: All lights are inside accessible for maintenance.
• Lighting Lens Safety Interlock: A magnetic actuated switch mounted in the light fixture provides a
safety interlock. When installed properly, the switch will prove that the lens cover is properly installed and
in place. All lights are interlocked through a series circuit that will not allow for spray activity of the circuit.
The light fixture remains illuminated in the fault condition.
• Exhaust Air Proving Switch: Exhaust air proving switch monitors differential air pressure of the exhaust
fan. The switch will activate when the fan is in operation and proving the minimum amount of differential
air pressure.
• Air Solenoid Valve (ASV): The air solenoid valve is located in the compressed air supply line to the
spray equipment. All safety features listed must be functioning and not faulted before the air solenoid
valve is activated.
Booths equipped with an air heater include additional safety features:
Safety features
Global Finishing Solutions
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