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LINT FILTER CONTROL SEQUENCE OF OPERATION
1. Dryers Operating When backpressure reaches the field adjustable setpoint
(default .7” W.C.) the air blowdown solenoid is activated for 10 seconds. There is
a field adjustable delay (default 10 seconds) before the blowdown will occur. The
air solenoid will continue to activate for 10 seconds at 3 minute intervals until
backpressure is below the field adjustable setpoint. The 3 minute interval will
allow the compressor to refill.
2. Dryers Excess Pressure Alarm When Operating When backpressure reaches
the field adjustable setpoint (default 1.5” W.C.) the warning indicator horn and
light will be activated continuously until the backpressure drops below the field
adjustable setpoint.
3. After Dryers Turn Off When backpressure drops to 0” W.C. the air blowdown
solenoid is activated for 10 seconds. There is a field adjustable delay (default 10
seconds) before the blowdown will occur This should occur only 1 time when all
the dryers are off. This should reset only when 1 or more dryers turn on and not
until the backpressure reaches .7” W.C. (Field Adjustable).
4. Manual Blowdown Operation When the button on the bottom of the filter control
is depressed, the air blowdown solenoid is activated for 10 seconds. The control
will require 3 minutes before another manual blowdown can be completed.
5. Fire Control If the temperature exceeds 260 degrees Fahrenheit the water
solenoid will open and the warning indicator horn and light will be activated
continuously until the temperature goes below 260 degrees Fahrenheit for 30
seconds. At which point the fire control will completely reset.
6. Manual Fire Control Test Inside the filter control is a black button. When the
button is depressed the water solenoid will open and the warning indicator horn
and light will be activated as long as the button is pressed.
7. Timed Interval Blowdown At a timed interval (default 2 hours) the air blowdown
solenoid is activated for 10 seconds.
8. Optional Vacuum Output When the Air Solenoid is activated a 24 VDC output
on Blowdown 2 activates. If the lint filter is equipped with the Energenics lint
evacuation vacuum system this operates the vacuum system and opens the gate
valve on the filter for 20 seconds. The timer starts at the same time the air
solenoid is activated.
OUTPUTS FROM FILTER CONTROL
Q1-Water Solenoid Valve
Q2-Air Solenoid Valve
Q3-Optional Vacuum Output