Aircare COBRA-5 User manual

1
Air-Care is a proud member
Air-Care is a Division of D.P.L. Enterprises, Inc.
3868 E. Post Road, Las Vegas, NV 89120 [phone], Fax [phone]
Website:
www.air
-
care.com
, E
-
mail: Info@Air
-
Care.com
NAFA
National Air Filter Association
NADCA
National Air Duct Cleaners Association
COBRA-5
Power Brush System
Revised 3Feb2014
P/N MM0122
Table of Contents
Unpacking & Safety information 2
Operating Instructions 3
Duct Cleaning with COBRA-5 4
Dryer Duct Cleaning w/ COBRA-5 5
Component Names & Locations 6
Options & cable repair parts 6
Parts List 8
Troubleshooting guide 9
Cable repairs & Specifications 10
Glossary 11
Warranty 12
ISSA
International Sanitary Supply
Association
FG0110

2
Unpacking & Installation Instructions
Remove the outer box and inspect for damage. Report all damage immediately to your carrier. If
special setup instructions are required, they will be taped to the outside of the equipment or in the
“Operating” section of this manual.
Inspect all of the packing material for small parts before discarding packaging material. Report
all damage to Air-Care immediately. Any attempt at repairing damages may void warranty.
Check that all parts are present (See Pages 6-7)
1. COBRA-5 variable speed motor drive unit.
2. Flexible drive cable, 3/8” core by 35 feet long.
3. Flex-E-Bristle Brush, for use in 4” to 18” diameter air ducts.
4. Three position remote control switch with 15-foot cable. (Fwd-OFF-Rev)
5. 9 foot AC power cable.
6. Commercial Option (12”-36” diameter Flex-E-Bristle Brush.)
7. Dryer Duct Options (5/16” cable, 4” brush, Nest Claw, etc)
Safety Precautions:
Always use safe and common sense precautions when working with Air-Care equipment. Do
not block walkways with equipment, and remove delicate and breakable articles from the
immediate work area. The following are precautions that should be reviewed by all persons who
will be involved in the cleaning activity.
•There are no user serviceable components in the COBRA-5; only trained technicians should
attempt to make internal repairs on this equipment.
•Never use the COBRA-5 in a wet environment.
•Always turn off the main power switch on the COBRA-5 panel when the brush and cable are
laid down to prevent injury if the “FWD-OFF-REV” switch is accidentally activated.
•Be sure all power cords and electrical extensions are rated to meet or exceed the original Air-
Care power cord spec’s, and inspect AC power plugs to be sure the ground pin is in place.
•Never connect power to Air-Care equipment unless all covers, and safety shields are in place.
Mechanical and electrical parts could activate and cause injury.
•Never allow anyone but a properly trained technician to use Air-Care equipment or cleaning
products.
•All Air-Care equipment is designed for US standard 115 volt, 60 Hz AC. Most Air-Care
equipment can be special ordered to meet other worldwide standards for a reasonable price
and delivery schedule. Always check the specifications on the Equipment before connecting
electrical power to Air-Care equipment.
•Keep the cable clear of breakable objects as it can flip and twist during higher torque
applications.
•Turn off main power switch when removing or replacing the Flex-E-Bristle Brush.
If you have questions about the safe use of any Air-Care product, call 702-454-5515
Equipment Specifications and part numbers are subject to and change without notice.

3
Operating Instructions
Setup and Testing
The COBRA-5 is designed for use with a portable negative air machine to thoroughly clean
round, square and rectangular ducts. Caution must be used when cleaning soft surface ducts
such as older, deteriorated duct-board or flexible ducts. There is a torque control switch to
reduce the torque when using the more flexible 5/16” Dryer Duct cable and accessories. Always
use the LOW torque setting when using the dryer duct cable.
1. Place the Cobra 5 drive unit on the floor or other stable surface near the ducts to be cleaned.
2. Verify that the speed control on the panel is at “0”, the power switch on the panel is off, “0”,
and the remote control is in the center “Off” position. (Page 6,7)
3. Connect the power cord to the inlet receptacle on of the motor unit panel and to a standard
115 volt AC outlet. (Page 6,7)
4. Set the “Torque” switch to “LOW” when using the dryer duct cable. The standard cable
requires the “HIGH” torque setting in most cases.
5. 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.
6. The FWD/REV switch on the panel and remote should be in the center or “Off” position.
7. 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.
8. Turn on the power switch, then turn the speed control to approximately “30”.
9. Using caution, flip the switch on the remote to “Forward” and wait a few seconds for the
brush to begin to turn slowly. If it fails to turn, go to the trouble shooting section, page 9.
10. Once the brush is turning, you may want to test the unit by increasing the speed slowly to
maximum then back to zero. Be careful to not let the brush hit anything breakable. The
remote switch can be set to “Off”, then “Reverse” and the speed control slowly adjusted up
and down to complete the test. Use caution when changing the direction of rotation. Pause
in the “STOP” position momentarily when changing from Forward to Reverse or Reverse to
Forward or the cable may flip around with the possibility of hitting breakable objects in the
immediate area.
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.

4
Duct Cleaning *
1. Before using the COBRA-5 to clean the air system, the supply and return duct diffuser grills
must be removed. Also, pre-vacuum and plug these openings, and then attach the Turbojet or
other negative air machine to the system.
2. CAUTION: DO NOT INSERT OR REMOVE THE BRUSH FROM THE DUCT WHILE
THE BRUSH IS TURNING
3. Begin at the duct opening farthest from the furnace/air conditioner.
4. With the Brush STOPPED, insert the brush and cable assembly one or two feet into the duct
to be cleaned. THE MACHINE END OF THE CABLE MUST BE STRAIGHT FOR AT
LEAST 4 to 5 FEET TO REDUCE THE FRICTION and HEATING OF THE CABLE
HOUSING. A tight bend in the cable will cause friction that will damage the cable housing
and cable resulting in costly repairs or replacement of the cable.
5. Start the brush by turning on the main power, set the speed dial to 30 or 40, and then flip the
remote switch to “Forward”. The brush will begin to rotate within a few seconds.
NOTE: The brush will begin to turn slowly at 10 to 20 on the Dial. Most duct cleaning
will be done between 30 and 60 on the scale (200 to 900 RPM).
6. Push the Flex-E-Bristle Brush into the duct with a smooth gentle force. The brush will
expand and compress to clean any size duct from 4” to 18” high and any width.
CAUTION: To clean duct board ducts, or older flex duct systems, the COBRA-5 Brush
system should be used at a low speed with caution as its aggressive cleaning action may
damage these delicate ducts. Internally insulated ducts, brittle flex ducts and fraying duct
board ducts should NOT be cleaned with a power brush.
(See Forward and Reverse Air Whisk and Sidewinder, on www.air-care.com)
7. When the end of the duct is reached, the cable can be pulled slowly back toward the opening.
If the duct is rectangular in shape, stop the COBRA-5 with the remote switch, then run it in
the Reverse direction as you pull it back to the duct opening. This will assure that the brush
cleans both sides of the rectangular duct.
8. Stop the brush 1 or 2 feet from the duct entrance then remove the brush. This duct opening
can now be plugged with the foam plug, and the next duct opening cleaned in the same
manner. Repeat this on each duct opening until all have been cleaned.
9. The duct system is now ready to be decontaminated by fogging in a duct sealant like Soot Set
and an EPA registered sanitizer such as Envirocon.
* For a complete Duct Cleaning Procedure Summary refer to the back of this manual. Air-Care also has classroom
and self-study training programs available. Please visit our website at www.air-care.com or call 800-322-9919 for a
free catalog.

5
Dryer Duct Cleaning *
Dryer exhaust ducts vary in construction, materials and configuration from city to city. The
general procedure for using the COBRA-5 Power Brush system described here may need to be
modified to safely and effectively clean these ducts in your area.
CAUTION: Cleaning the exhaust duct on a clothes dryer will improve performance and reduce
future lint build up, but the dryer itself must also be cleaned and lint removed from its fan,
heating area and other interior components to reduce the risk of fire.
1. With the dryer running, clip the outside flap “OPEN” and check the airflow at the exhaust
with a flow meter. Write down the reading for comparison after cleaning.
2. Turn off the dryer, remove power, then move it away from the wall and disconnect the
exhaust tubing. If it is a gas dryer, be careful to not damage or break the gas line.
3. Apply vacuum to the end of the exhaust duct (inside or outside, depending on
configuration).
4. Use the COBRA-5 in “Low Torque” mode with the 5/16” flexible dryer duct cable.
5. Set the speed dial to 50 or 60 and insert the brush into the exhaust duct.
6. Turn the remote switch to “FORWARD”, and push the brush into the duct with the cable.
7. If resistance is met, try reversing the rotation of the brush and pushing it in again.
8. If the cable cannot be pushed all the way to the end of the duct, it may be necessary to
insert the cable and brush from the other end of the duct.
9. If there is a visible lint clog or bird nest, the nest claw may be needed to break it up.
CAUTION: The nest claw can be very aggressive, and may damage flexible ducts.
10. If you have access to only one end of the exhaust duct, the Air-Care Vent Vac 4x4 “Y”
adapter allows the vacuum and the cable to be inserted from the same end of the exhaust
duct.
11. Remove the back cover of the dryer and clean out the lint on internal components.
Usually 4-8 screws are used to mount the back cover. Access to the interior of the dryer
will vary with model, be careful to not damage it.
12. Once the duct and dryer are clean, connect the dryer to the wall opening with aluminum
hose. (The Consumer Product Safety Commission does NOT recommend plastic
connector hoses, nor does any major dryer manufacturer).
13. Turn the dryer on and again check the airflow outside. Typically over 1000 fpm (Feet Per
Minute) is good, and less than 1000 fpm is not. If the flow has increased substantially
over the original flow rate, you have been successful.
14. Clean up any lint around the outside of the dryer, clean the exterior of the dryer and if
you have a sticker or magnet, date it for a follow-up cleaning in 12 months.
* For complete Instructions on Cleaning Dryer Ducts, see the Air-Care
Dryer Duct Cleaning Video.

6
Installing Flex-E-Bristle Brush
on Cobra Cable
Main Power
Switch
High/Low
Torque Switch
Circuit
Breaker
Brush Cable
Connector
Remote Switch &
Cable storage
FWD/OFF/REV
Speed
Control
Power Inlet
Computer type
Panel Switch &
Cable
FWD/OFF/REV
Power LED
Selector Switch for
“FWD/OFF/REV”
For Panel or Remote
Installing Cobra Cable to Motor
Box coupler.
Control Panel Components

7
15 Ft Remote for
FWD/OFF/REV
with Belt Clip
COBRA-5 Standard Accessories
Optional Accessories
COBRA-5 Instructions
on Air-Care Resource
CD
18” Flex-E-Bristle Brush, Standard
Bristles, for 4”-18” ducts.
3/8”x 35’ Standard Cobra Cable with
18” Brush.
Dryer Duct
Cleaning DVD
Dryer Duct Nest Claw
Dryer Exhaust Vent Flap Clip
Anemometer (Air Flow
Meter)
5/16” Dryer Duct Cable, Includes:
4” Dryer Duct Brush
Replacement Bristles for
Flex-E-Bristle Brushes
36” Flex-E-Bristle Brush,
Commercial Bristles for 14”- 30”
ducts.
COBRA-5 Motor and
Control Box with 15 ft
Remote and storage area.

8
Parts List
Equipment Specifications and part numbers are subject to change without notice.
Ref #
Description Included
Part #
1 COBRA-5, Complete with Standard Accessories 120/220 -- FG0110
Rev B
2 COBRA-5, Motor & Control Box with Remote for 120 V and
220V YES SACOB0038
3 Brush and Cable, COBRA-5 Std 3/8” Core x 35’ Cable. No
brush, order 18” Flex-E-Bristle Brush (Ref#7) YES SACOB0015
4 Internal Parts for Motor and control panel YES Call
5 Dryer Duct Cable, 5/16” core x 20’, Comes w/ 4” Dryer Duct
Brush Optional FG0058
6 Dryer Duct Cable, 5/16” core x 35’, Comes w/ 4” Dryer Duct
Brush Optional FG0060
7 18” Flex-E-Bristle Brush, Standard Black Bristles for 4” to 18”
Ducts YES SACOB0011
8 The Brush Hub for the Cobra 5 can be fitted with other length
and diameter bristles for special applications. Optional SACOB0005
9 18” Replacement Bristles, Standard Bristles, 18” x .021 diameter
(5 changes) Optional BA0006
10 Handle, Coil’n’Carry YES FG0102
11 Power Cord, 9 foot YES EC0012
12 Dryer Duct Brush, 4” w/ Lint Buster Ball Optional FG0072
13 Cable Housing ¾” OD for 3/8” Core Optional COM0022
14 Nest Claw for Dryer Ducts Optional FG0089
15 Cable Repair Kit, for Standard 3/8” Cable, Brush End Optional SACOB0020
16 Cable Repair Kit, for Dryer 5/16” Cable, Brush End Optional SACOB0021
17 Cable Repair Kit, for Standard 3/8” Cable, Machine End Optional SACOB0018
18 Cable Repair Kit, for Dryer 5/16” Cable, Machine End Optional SACOB0019
19 Allen Wrench, for Brush to Cable Set Screw, 1/8” -- Optional BC0005
20 Disconnect Nut (For all Cobra Cables) Optional ACC0151
21 Air Flow Meter – Thermo-Anemometer Optional FG0096
22 Vent Flap Clip Optional COM0196
23 Dryer Duct Cleaning Instruction DVD Optional SAO0039
24 COBRA-5 Instructions, This Document (On Air-Care Resource
CD). P/N MM0122 YES SAO0009
25 DVD, Cobra Instructional Video YES SAO0130
26 Motor, ½ HP 90 VDC YES M0005
27 Remote, Direct Attached, 15 ft cable, Box, switch & belt clip YES SACOB0033
28 Filter, Inlet, Polypropylene Cut to 3.06” Dia YES SACOB0054

9
Troubleshooting Guide
Prior to troubleshooting, check the following .
1. Be sure power cord is in the power inlet on the COBRA-5 Motor Case Panel, AND the switch is in
the “ON” or “1” position. The LED should be on, if not try another outlet.
2. When testing the motor, select “Remote” for FORWARD or REVERSE, and use the remote
switch to turn the motor on for the first test.
3. Set the speed control on the front of the motor case to “40”.
4. It is SAFER to run the COBRA-5 with the cable end DISCONNECTED. You will be told when to
attach it.
Problem Check IF Action
Motor does not
run. 1. Did you follow the first 5 steps at the top of this page? Yes
No
Be sure the Brush and Cable have been
disconnected and Go to #2
Follow the 5 instructions above then go to
#2.
Motor does not
run 2. Turn the Motor “ON” with the Remote switch in FWD Then
switch to REV. Did the Motor
Run in BOTH directions?
Yes
No
Go to #3
The Remote switch may defective, call Air-
Care
Motor does not
run. 3. Switch the “FWD / REV” selector to “PANEL” and flip the
“FWD/REV” switches to
Forward then Reverse. Does
the Motor run?
Yes
No
The Remote Switch may be defective, call
Air-Care.
Go to #4
Motor Does not
Run 4. Does the Motor HUM when turned on? Yes
No
Call Air-Care.
Go to #5
Motor does not
run. 5. Check the circuit breaker on the panel, has it popped up? Yes
No
Reset the circuit breaker and try the motor
again. Go to #6.
Call Air-Care
6. Does the circuit breaker trip
every time the motor is turned
on in forward and reverse?
Yes
No Call Air-Care Run a full test in forward, reverse, fast and
slow,
If it runs OK, attach the brush and cable and
run in all modes, then go to #7.
7. Did the COBRA-5 run
properly in all modes? Yes
No
Problem solved. A power surge may have
tripped the breaker.
Look for the new symptom in the left column
or call Air-Care
The Brush
slows down
when set to
#100 on speed
Control
8. Is the Cable coiled tightly or
is this a brand new cable? Yes
No
When being used, the cable must be coiled
loosely, about 24” diameter or larger coils. A
new cable must “break in” a few hours.
Go to #10
9. Is the Large 36” brush
attached?
Yes
No
The 36” brush should only be run at speeds
of 5 and lower.
Go to #11
10. Is the standard cable being
used (3/8” Core) Yes No Be sure the torque switch is set to “High” Call Air-Care
The Dryer
Cable (5/16”)
twists
11. Is the torque switch set to
“LOW” Yes No Call Air-Care Set the torque switch to LOW and test
again.

10
Cobra Cable Repair Procedure
1. If one or more wires breaks at the end of a Cobra Cable, it should be repaired to
prevent the strands from unraveling inside the housing and damaging the cable
beyond repair.
2. The brush end is the most likely to be damaged during use, but the machine end can
also be repaired in the same manner with the proper repair kit.
3. Locate the damaged area, and grind off at least 2 inches beyond the visible damage.
4. DO NOT USE A HACK SAW; it will cause the strands to separate. Use an abrasive
chop saw or a grinder to cut the cable to the proper length.
5. The housing must be cut 2” shorter than the core.
6. Install the proper size repair end on the cable core (3/8” standard core or 5/16” dryer
core). Be sure to reinstall the washer onto the end of the cable before the replacement
end.
7. Tighten the collar set screws alternately a little at a time until the collar is holding the
split end on the end of the cable securely.
8. The cable is now ready for testing. It should perform like new.
If you have any questions, call Air-Care at 800-322-9919.
Specifications
Power Requirements: 120/220 VAC, 50/60 Hz 7.0 Amps
Size: 16” W x 12” D x 9 1/2” H
Weight: 28-lbs. motor case, 7 lbs. Cable and Brush
Motor: 90-Volt High Torque DC Motor
Controller: 90 Volt DC controller with speed, torque and load correction.
With “HIGH” and “LOW” torque settings
Cable sizes: Standard: 3/8” core, 3/4” O.D. Nylon housing, 35 feet long.
Optional: 50-foot cable available
Optional: 5/16” core, ½” housing Dryer Duct cable available in
20 ft or 35-foot lengths
Brushes: Standard: 4”-18” self-adjusting Flexible Brush, Detachable
Optional 14”-36” Self-Adjusting Flex-E-Bristle Brush
Optional 4” Dryer duct brush with Lint Buster Ball
Optional: Dryer Duct Nest Claw
Power Cord: 9 foot grounded plug with “computer” type connecting socket.
Specifications subject to change without notice.

11
Glossary & Acronyms
1. ACGIH—American Conference of Government Industrial Hygienists
2. ASHRAE—American Society of Heating, Refrigerating, and Air Conditioning Engineers
3. Air Handler/ AHU—The Furnace or air conditioner that heats, cools and moves the air.
4. Antimicrobial—Agent that kills Bacteria, Molds and viruses. See “Sanitizer
5. Arrestance – An ASHRAE standard procedure to measure air filter efficiency (52.1)
6. Bioaerosols— Molds and bacteria that are found floating in the air.
7. Biological Contaminants— Bacterial, Mold/Fungus, viruses and their waste, byproducts and decomposition
materials that can be inhaled and cause many types of health effects.
8. Building Related Illness—Diagnosable illness whose symptoms can be identified and whose cause can be
directly attributed to airborne building pollutants (e.g., Legionnaire’s disease, and hypersensitivity
pneumonitis).
9. CFM—Cubic Feet per Minute, a measure of how much air is flowing in an air system.
10. CO—Carbon Monoxide, an odorless, toxic gas produced during combustion.
11. CO
2
—Carbon Dioxide an odorless, non-toxic gas produced during combustion and exhaled by people.
12. Ceiling Plenum – The area above a suspended ceiling that may be used as a return path to the Air Handler.
13. Conditioned Air – The air that has been filtered, heated or cooled by the air handler.
14. Dampers – Flaps or valves in the air duct that control the amount of airflow in the duct.
15. Diffusers & Grilles & Registers – The covers at the end of supply and return ducts that control the amount and
direction of the air-conditioned air entering or leaving a room.
16. Electrostatic Filter – A High Efficiency (95% Arrestance) Air filter that generate static electricity from the air
movement through the air handler and captures dust from the air while the clean air move freely through it.
17. EPA—Environmental Protection Agency
18. Duct – A metal, plastic or fiberglass tube that transports air to and from the Air Handler. They can be round,
square or rectangular.
19. Duct Board – Compressed fiberglass material used to make air ducts, particularly in the southern U.S.
20. Fiberglass Filter – A disposable, very low efficiency filter (approx. 10% arrestance).
21. Flex duct – Plastic fabric duct with a spiral wire support. It us used extensively in the Western U.S.
22. HEPA—High Efficiency Particulate Air
23. HVAC—Heating, ventilation and air-conditioning
24. IAQ—Indoor Air Quality
25. MSDS—Material Safety Data Sheet
26. Make-up Air – Fresh “outside” air that is brought into a Commercial building.
27. NADCA-- National Air Duct Cleaners Association
28. NAFA – National Air Filter Association
29. NIOSH—National Institute for Occupational Safety and Health
30. Negative building pressure – A condition that allows air to flow into a building when a door is opened.
31. NSC -- Nevada Safety Counsel
32. NSF International – An independent testing laboratory for Air filters
33. OSHA—Occupational Safety and Health Administration
34. Positive building Pressure – A condition when air will come out of a building when a door is opened.
35. Re-entrainment – The flow of dust and debris removed from an air system back into the same building
36. Return/Return Duct
37. Sanitizer – A material designed to kill mold, bacteria, and viruses.
38. Sick Building Syndrome – A group of symptoms such as headache and watery eyes that disappear after the
sufferer leaves the building for a few hours.
39. Supply/ Supply Duct—The opening and related ductwork that delivers conditioned air to a room.
40. VAV—Variable air volume system – A system that varies the amount of flow of air to regulate temperature.
41. VOC’s—See “Volatile Organic Compounds”
42. Volatile Organic Compounds (VOC’s)—Chemicals that release gasses into the air such as solvents.

12
LIMITED WARRANTY
COBRA 5 POWERBRUSH
Air-Care warrants this product to be free from defects in materials and workmanship to the
original purchaser for a period of two (2) years from the date of purchase. Components listed
below are excluded from this two year period and are covered for periods described below:
Motor 1 Year
Circuit Board & Remote 1 Year
Cable Assembly 90 Days
Brush Assembly No Warranty
Warranty covers both parts and labor (labor is to be performed at Air-Care’s facility located at
3868 E. Post Road; Las Vegas, Nevada).
Warranty is extended to the original purchaser and is not transferrable.
This warranty does not extend to any damage to a product caused by or attributable to freight
damage, abuse, misuse, improper or abnormal usage. Warranty is also void if the product has
been modified or altered in any way.
The purchaser is responsible for the cost of shipping the equipment to Air-Care’s facility for
evaluation. If found to be defective and covered by the terms of this warranty, Air-Care will pay
FedEx ground shipping charges on the repaired or replaced item back to the purchaser’s location.
Any additional expedited service charges for quicker shipping shall be born by the purchaser. If
the product or component is not found to be a warranty issue, the purchaser will be responsible
for return shipping charges.
Air-Care is not responsible or liable for indirect, special, or consequential damages arising out of
or in connection with the use of performance of the product; damages with respect to any
economic loss, loss of property, loss of revenues or profits, loss of use, or other incidental or
consequential damages of whatsoever nature.
The warranty extended hereunder is in lieu of any and all other warranties, and any implied
warranties of any type.
This warranty gives you specific rights. These rights and others vary from state to state.
Division of D.P.L. Enterprises Inc.
3868 East Post Road, Las Vegas, Nevada 89120, [phone], FAX [phone]
Website: www.air-care.com; E-mail: [email protected]