3
Operating Instructions
Setup and Testing
The COBRA-VI is designed for use with a portable negative air machine to thoroughly clean round,
square and rectangular ducts made of all materials. Caution must be used when cleaning soft surface
ducts such as
older
,
deteriorated
duct-board or flexible ducts and metal ducts with internal insulation.
1.
Place the Cobra VI drive unit on the floor or other stable surface near the ducts to be cleaned.
2.
The Cobra VI always starts in the Lowest of its 4 speeds. If a higher speed is required use the button
on the Remote “
+
” or the rocker switch on the Control Panel to step the speed up or down.
3.
Connect a power cord to the pigtail on of the rear of Power unit and to a standard 115 volt grounded
AC outlet.
4.
Attach the flexible shaft to the motor unit by first aligning the square end of the shaft with the square
hole in the drive unit, then screwing the black disconnect nut onto the 2” diameter, threaded end of the
coupler. This nut should be snug, but NOT excessively tight.
5.
Hold the outer cable housing near the Flex-E-Bristle Brush. Hold the brush where it will not hit you or
other objects when it begins to rotate. It should only be started AFTER it is inside an air duct.
6.
Turn on the power breaker/switch.
7.
Using caution, Press the “START” button on the Remote or the rocker switch on the Control panel.
The brush will be started in its LOWEST speed. If a new brush cable is still rolled up tighter than a
30” diameter, it may not turn due to internal friction. Open up the size of the coiled cable and try to
run it again.
8.
Once the brush is turning, test other functions by increasing the speed slowly to maximum by pressing
the Speed Increase button “
+
” 3 times, then press the Speed Reduce Button “
-
“ Be careful to not let
the brush hit anything breakable. The direction of rotation can be changed by pressing the “Change
Directions” switch. The brush will slow to a stop then start to turn in the opposite direction at the
lowest speed. Now Press “STOP” before going on to test the Remote Controls.
9.
The handheld remote can now be tested for the same functions to START, STOP, Change Directions,
Increase Speed and Decrease Speed. Use
caution
when
changing
the direction of
rotation
. The back
torque in the cable may flip the coils of the cable with the possibility of hitting breakable objects in
the immediate area. To reduce this condition, The Brush Speed will always return to Speed #1 when
the Rotational Direction is changed. You may then increase it with the speed switch.
10.
NOTE: When the Change Direction switch is activated, the Lights on the Panel switches will flash
while the Brush is slowing to a stop and restarting in the SLOWEST speed.
11.
The brush MUST BE STOPPED BEFORE INSERTING IT INTO AN AIR DUCT.
12.
DO NOT CRIMP THE CABLE WHEN STORING OR TRANSPORTING. THIS MAY BEND THE
STRANDS IN THE CABLE CAUSING PREMATURE FATIGUE AND FAILURE.
