MICRO-AIR FORCE FRP4, Installation And Operation Manual

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FRP MICRO AIR
®
CLEAN AIR SYSTEMS
4. Wire from the Overload T1, T2, and T3 to the motor
electrical housing. Wire size should be the same as
step 3.
5. Wire from the timer board in the full control electrical
box and the pulse jumper box on the side of the unit.
Wire size is 14AWG minimum.
6. Reconnect the power. Momentarily turn the unit
on and off with the start/stop switches. Confi rm
the rotation of the motor is in the proper direction.
Rotation can be viewed at the open end of the blower
motor.
7. If motor rotation is in the proper direction then AMP
draw information is located on the inside of the Full
Electrical Control Box cover. If motor current is higher
than rated for the motor supplied, do not continue
operation. Re-check your wiring and if problems
continue contact your Micro Air representative for
instructions.
UNIT OPERATION:
1. Turn the blower on. This action will cause the fi lter
unit to activate and start cleaning fi lters.
2. Once the unit is running, the Roto-Pulse cleaning
system will be operational. Operation is detected by
hearing a 0.07 second air pulse approximately every 5
seconds. If adjustment to timing of pulses is desired
refer to the section “Roto-Pulse Cleaning Timer
Adjustments”.
3. Check the After-Pulse cleaning cycle by turning off
the blower. The unit should continue to pulse every 5
seconds for a period of approximately 17 minutes. If
adjustment to the after-pulse time is desired refer to the
section “After-Pulse Cleaning Timer Adjustments”.
CARTRIDGE CLEANING OPERATION:
The Micro Air Dust Collector is designed with the
Roto-Pulse Cleaning System to clean the cartridge fi lters.
This system provides superior cleaning performance using
a rotating tube with pre-drilled holes. As the pulse valve
opens, the Roto-Pulse tube rotates while air exits the holes,
thus providing the cleaning of the cartridge (Figure 18).
1. For proper cleaning, the compressed air pressure should
be regulated at 80 psi to 90 psi.
2. During normal operation the Roto-Pulse cleaning
system is factory set to clean two (2) cartridge fi lters
for a period of 0.07 seconds every 5 seconds.
3. Once the unit is turned off the cleaning cycle will
continue for a period of 17 minutes. Do not service the
fi lters until cleaning is completed.
Caution: Allow 20 minutes of downtime
before opening fi lter access doors.
After-Pulse system is operational after unit
is turned off.
4. The Roto-Pulse cleaning operation dislodges particles
from the cartridges. Particles then fall down into the
dust tray or collection hopper.
5. After continued use of the unit, the dust collection
barrel or dust tray will need to be emptied. The
frequency of servicing will vary depending on the type
and quantitity of dust that is collected.
ROTO-PULSE CLEANING TIMER
ADJUSTMENTS:
Caution: Adjustment can cause
exposure to live components.
1. Turn the blower off.
2. Open the electrical box cover.
3. The timer control board is preset at the factory to clean
two (2) cartridge fi lters every 5 seconds. This time can
be adjusted from 1 second to 999 seconds. To adjust
this time press the select button on the timer board until
the “off time” LED is lit. Press the up/down buttons
until the desired value is displayed. Press select to set
the new value.
Note: Cleaning of the fi lters too often will decrease your
level of performance. A certain level of dust cake on
the fi lters will improve the capture effi ciency of the
fi lters. You should try to maintain a mimimum of 1 in.
w.c. of pressure differential across the fi lters. If you
can not maintain this minimum level of differential
pressure across the fi lters the time between cleaning
pulses should be increased until this can be achieved.
4. The timer control board is preset at the factory to have
a cleaning pulse duration of 0.07 seconds. This can be
adjusted from 0.05 seconds to 600 seconds. To adjust
this time press the select button on the timer board until
the “on time” LED is lit. Press the up/down buttons
until the desired value is displayed. Press select to set
the new value.
11
FIGURE 18
Roto-Pulse Tube
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