Section 5
Booth doors blowing open (after initial commissioning and booth balancing) • If doors blow open when operator presses start button, then acceleration time on exhaust fan should be decreased so that the exhaust fan ramps up slightly faster than the AMU fan. • P7 = Acceleration time (in seconds) • If doors blow open when operator presses stop button, then deceleration time on exhaust fan should be increased so that the exhaust fan ramps down slightly slower than the AMU fan. • P250 = Deceleration time (in seconds) • If doors blow open during normal operation of the booth, then: • Pressure setting on the Carel controller may be too much in the positive range (lower setting) • Exhaust filters may be clogged • Door latches may be loose or out of adjustment • Booth may not have been properly commissioned. Fan speeds need to be adjusted to meet design FPM through the booth, and proper profile pressure across the burner
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