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d2. _____ With the booth doors closed, adjust the “booth pressure set point” to 0.099 which should cause the booth doors to pop open. - If the booth doors do not pop open, check the hz on the exhaust VFD. The hz should be lower than 45.00. If the hz does not drop below 45.00, then the lower limit set point in the Corel controller needs to be adjusted down. Log in as technician and adjust “Spray Exh VFD Min” set point. d3. _____ Adjust “booth pressure set point” to -0.003 and allow pressure to stabilize. d4. _____ Check the Dwyer 477AV-0 gauge that is connected to the red & green tubes in the AMU control panel. This gauge is showing the pressure across the burner profile plates. Gauge should be reading between .5” and .7” d4a. If reading is higher than .7”, then AMU fan is moving more air than expected across the burner. The AMU fan speed will need to be adjusted down so that the pressure reads between .5” and .7”. P77 = 2 (Unlock) P1 = new freq reference P2 = minimum freq reference (needs to be lower than P1) P55 = same as P1 (freq monitor reference)
P125 = same as P1 (freq setting gain) C2 = same as P1 (freq setting bias) P77 = 1 (lock)
d4b. If reading is lower than .5”, then AMU fan is moving less air than expected across the burner. The profile pressure can be increased in 2 ways depending on the how well the booth is balancing. d4b1. If the booth is easily capable of -0.099” then a. Speed up the AMU fan higher than 60.00hz until FLA (step b11c ) is achieved b. Check the burner profile pressure to see if it is between .5” and .7” c. If burner profile pressure is still less than .5” when AMU fan is running at FLA, close profile damper around the burner until pressure is between .5” and .7” d4b2. If the booth is barely capable of -0.099 then Close the profile damper around the burner until burner profile pressure is between .5” and .7”
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