U.S. Products COBRA-H1 Operating instructions

COBRA®-H1
EXTRACTOR
120V
INFORMATION
&
OPERATING
INSTRUCTIONS
IMPROPER USE OF THE MACHINE WILL VOID THE WARRANTY
1. Always use a defoamer when foaming occurs to prevent vacuum motor damage.
2. Keep machine from rain and snow, extremes in temperatures, and store in a
heated location. Use the machine indoors. Do not use outdoors.
3. Do not let the pump run dry.
4. Use approved chemicals only. NO SOLVENTS.
5. Wear gloves or use rags when removing quick disconnects to prevent burns.
6. Never use water above 130 ºF/54 ºC in the solution tank.
3/10 revised 11/11 Form No. 56041895
CAUTION: DO NOT OPERATE MACHINE UNTIL YOU HAVE
READ ALL SECTIONS OF THIS INSTRUCTION MANUAL

Form No. 56041895 - 2
IMPORTANT SAFETY INSTRUCTIONS
This machine is only suitable for commercial use, for example in hotels, schools, hospitals, factories, shops and
offices other than normal residential housekeeping purposes.
When using any electrical appliance, basic precautions should always be followed, including the following:
NOTE: Read all instructions before using this machine.
WARNING!
To reduce the risk of fire, electric shock, or injury:
•Do not leave the machine unattended when it is plugged in. Unplug the unit from the outlet when not in use and before
servicing.
•To avoid electric shock, do not expose to rain or snow. Store and use machine indoors only, store in a heated location.
Do not let the machine or wand freeze.
•Do not allow to be used as a toy. Close attention is necessary when used near children.
•Use only as described in this manual. Use only the manufacturer’s recommended attachments.
•Never add water over 130 ºF/54 ºC to the solution tank.
•Do not use with damaged cord or plug. If the machine is not working as it should, has been dropped, damaged, left
outdoors or dropped into water, return it to a service center.
•Do not pull by the cords, use the cords as a handle, close a door on the cord, or pull the cords around sharp edges or
corners. Do not run the machine over the cords. Keep the cords away from heated surfaces. To unplug, grasp the plug,
not the cord.
•Do not handle the plug, the cord, or the machine with wet hands.
•Extension cords must be 12/3 and no longer than 50 feet. Replace the cord or plug immediately if the ground prong
becomes damaged.
•Do not put any object into openings. Do not use with any opening blocked; keep free of dust, lint, hair, and anything that
may reduce air flow.
•Keep loose clothing, hair, fingers, and all parts of body away from openings and moving parts.
•Do not pick up anything that is burning or smoking, such as cigarettes, matches, or hot ashes, or any health endangering
dusts. Do not use to pick up flammable or combustible liquids such as gasoline or use in areas where they may be pres-
ent.
•Turn off all controls before unplugging.
•Use extra care when cleaning on stairs.
•Connect to a properly grounded outlet only.
•Liquid ejected at the spray nozzle could be dangerous as a result of its temperature, pressure, or chemical content.

Form No. 56041895 - 3
INSPECTION:
Carefully unpack and inspect your COBRA-H1 for shipping damage. Each machine is tested and inspected before shipping.
Any shipping damage incurred is the responsibility of the carrier. You should notify the carrier immediately if you notice dam-
age to the box or to the machine or parts.
CLEANING SOLUTIONS:
We recommend liquid cleaning chemicals; powder chemicals may be used, but unless mixed very thoroughly they could cause a build-up
in the pump, lines, heat exchanger and/or quick disconnects. Any problem caused by a chemical build-up is not covered by warranty. Use
a neutral cleaner with a pH between 5 and 10 to avoid premature wear of the pump, seals, and/or other components. Damage caused by
the use of strong chemicals is not covered by the warranty.
MAINTENANCE:
For optimum performance flush the machine with clear water at the end of each working day. Once a month, minimum, run a flushing
compound through the machine to break up any mineral or chemical build-up that may have formed. The vacuum motors and the pump
do not require any scheduled maintenance; however, the vacuum motors may require replacement brushes after 1000 - 1500 hours.
Clean the body with an all purpose detergent, and protect it with an automobile interior polish. Lubricate the wheels, castors, and quick
disconnects with an all purpose silicone spray.
WARNING!
The Products sold with this Manual contain or may contain chemicals that are known to certain governments (such as
the State of California, as identified in its Proposition 65 Regulatory Warning Law) to cause cancer, birth defects or other
reproductive harm. In certain locations (including the State of California) purchasers of these Products that place them
in service at an employment job site or a publicly accessible space are required by regulation to make certain notices,
warnings or disclosures regarding the chemicals that are or may be contained in the Products at or about such work sites. It
is the purchaser’s responsibility to know the content of, and to comply with, any laws and regulations relating to the use of
these Products in such environments. The Manufacturer disclaims any responsibility to advise purchasers of any specific
requirements that may be applicable to the use of the Products in such environments.
MODIFICATIONS
Modifications and additions to the cleaning machine which affect capacity and safe operation shall not be performed by the customer
or user without prior written approval from Nilfisk-Advance Inc. Unapproved modifications will void the machine warranty and make the
customer liable for any resulting accidents.
SAVE THIS INFORMATION
Serial Number: __________________ Model: COBRA-H1-A_
Purchase Date: __________________
Write the name and phone number of your distributor:
Be sure to register your warranty online at www.usproducts.com/warranty

Form No. 56041895 - 4
HOLDING TANK LID
SWITCH PLATE
LID (RECOVERY TANK)
VAC INTAKE
LATCH (2)
DRAIN VALVE
QUICK-DISCONNECT
CASTOR
VENT
WHEEL
123
4
SWITCH PLATE
1 = VACUUM ON/OFF SWITCH
2 = PUMP ON/OFF SWITCH
3 = BYPASS ON/OFF SWITCH
4 = GREEN LIGHT. INDICATES WHEN
THE CORDS ARE ON TWO SEPARATE
CIRCUITS.
COBRA-H1
KNOW YOUR MACHINE

Form No. 56041895 - 5
OPERATION
1 Inspect the machine, hoses, and cleaning tools for cleanliness and completeness.
2 Fill the solution tank with water. Using warm water may be a benefit in cleaning effectiveness, but do not use hot water
above (130 °F/54 °C) in the tank.
3 Plug in the power cords. Do not connect both cords to the same outlet; the green, circuit locator light (4) on the switch
plate should light up. If the locator light does not come on, try different outlets with one of the cords until it does. If
you are certain the cords are on separate circuits, but the green light still does light up, turn the Bypass switch (3) on.
CAUTION: using the Bypass switch when the cords are on the same circuit may cause the circuit breaker in the wall to
trip. NOTE: the receptacle on the left (viewed from behind the machine) powers the heater.
4 Add liquid cleaning solution, with a pH of between 6 and 9, to the solution tank.
5 Attach the spray hose to the solution quick disconnect and the vacuum hose to the hose barb on the recovery tank. Pull
the hoses off the real to the desired length. Attach the other ends of the hoses to the cleaning tool.
6 Allow the heat exchanger two minutes to reach operating temperature.
7 Turn on the pump (2). Turn on the vacuum (1).
8 Begin cleaning using the correct hoses and tool.
9 Use defoamer in the recovery tank any time foaming occurs.
10 Monitor the water level in the solution tank. Do not let the pump run dry.
11 When the solution tank gets low, turn both the pump and the vacuum off, fill the solution tank, empty and clean the
recovery tank.
12 When finished with the job, remove any unused solution from the solution tank, and run a few gallons of clean water
through the system. Drain the recovery tank.
DUAL CORD SENSOR CIRCUIT:
This unique, patented system is operated by a solid state circuit. It will inform the operator when the two cords are plugged into separate
circuits by turning on the green, circuit locator light. This helps to prevent tripping circuit breakers.
NOTE: if the circuit locator light does not illuminate when the cords are plugged in, then both cords are on the same circuit. Try other
outlets with one of the cords until you get the locator light to come on.
NOTE: if the bypass, or heat, switch is turned on when both cords are on the same circuit, the breaker may trip.
BYPASS SWITCH:
The bypass switch completely bypasses the circuit locator. Use this feature when you cannot get the green light to come on and you
believe that the two cords are on separate circuits.
CAUTION!
If the bypass switch is on and the two cords are plugged into the same circuit, the breaker may blow.
BALL FLOAT VACUUM SHUT-OFF
Prior to using the machine, always check that the float filter is clean and the ball can travel freely. When the recovery tank is full, the ball
float will rise and will shut off the vacuum flow to prevent any more water from entering the tank. When this occurs, turn off the vacuum
and empty the recovery tank.
NOTE: if foam is present, or if the ball float is prevented from rising, the float will not be able to stop the air flow, and the tank may over fill.
Water damage to the vacuum motors is not covered by warranty.
CAUTION!
To avoid vacuum motor damage, always use a defoamer any time foam is present.

Form No. 56041895 - 6
77
79
78
COBRA-H1
120 V
4A
5
7
12
14 15
16
17
18
19
20
14
15A
31
39 40
41
42
44
47
49
50
53
45
54
55
34
32
58
66
66
65
67
67
68
69
16A
43
22
6
4B
1
4
4B
2
3
56
57
75
76
13
10
11
74
40A
40 40B 41
41
9
8
27 30
29
28
25
26
24
9A
9A
80
46
48
revised 11/11

Form No. 56041895 - 7
COBRA-H1 120V
Item Ref. No. Qty Description
1#903USP 1 Drain Gate (see Misc.)*
2#21 4 Screw, Button Head, 10/32 X 5/8”
3
#56471194 2 Latch
4#187USP 1 O-ring
4A#187B 2 Washer, flat Rubber
4B#185USP 1 Nut, 1-1/2”
5 VT-2 1 Vacuum Tank, White
6 907 1 Hose Barb, 1-1/2”
7#922USP 1 Elbow, 90 PVC 1-1/2” Slip x FPT
8 1074 1 Gasket (Machines made after 2-15-05)
9#2086A 1 Lid and Ring (Machines made after 2-15-05)
#56380968 1 O-Ring for 2086A Lid
9A FP436 2 Chain and Hardware
10 FP193 1 Float, Ball & Cage
11#185USP 1 Nut Die Cast Alum 1-1/2 N
12#187USP 1 O-Ring-BUNAN-1-3/4ID x .125 thick
13#922USP 1 PVC Elbow, 1-1/2”
14#156USP 4 Hose Clamp, (size 28)
15#430B 1 Hose, Vacuum, Rubber, 2” x 21”
15A#430B 1 Hose, Vacuum, Rubber, 2” x 21”
16 FP511 1 Heat Exchanger, complete
16A see Misc. Parts List
17 76 1 Hose Clamp
18#455USP 1 Mount, Heat Exchanger
19 2012 1 Hose, Heater to Outlet
20#91USP 7 Elbow, Brass
22 FP228B 1 Gasket
24 408B 1 Vacuum Motor, 3-stage
25 14 4 Washer Flat 3/16 Zinc Plat
26 8 15 Lock Nut, 1/4-20
27 2013A 1 Gasket 1 Side Adhesive 5 1/2
28 136 6 Nut 1/4-20 Finish Zinc Plate
29 14 17 Washer Flat 3/16 Zinc Plat
30 270 3 Bolt 1/4 -20 X 5 Full Three
31#MA-6 1 Manifold, Vacuum
32#FP220 1 Flange, Exhaust, w/Hose & Hardware
34 8 8 Lock Nut, 1/4-20
39#45USP 1 Quick Disconnect, 1/4 n.p.t.
40#115USP 3 Washer, Fiber
40A#116A 1 Bushing, Fiber
40B#31USP 1 Washer, Brass
41#SUB928 3 Louver, 3” (includes screws)
42 909A 2 Latch Strike, for Latch, S/S
43 2001 2 Decal-Cobra
44 937 2 Reducer Bushing PVC 3/4” X 1/2”
45#184USP 2 Cord Retainer With Flex Protector
46 801C 2 Rod Stainless/Steel 1/4 X 4
47#910-1693 1 Axle Rod Zinc Plated
48 495A 2 Power Cord, 25’, Yellow
Item Ref. No. Qty Description
49 2003 2 Wheel, 8”
50#27AUSP 2 Axle Cap, Black
54 BS-6 1 Base, Cobra, Black
55 2002 2 Castor, Swivel, 3”
56 HT-2 1 Holding Tank
57 207A 1 Filter 40 Mesh S/S 1/2npt Fem
58#901USP 1 Lid, Holding Tank
65#53869A 1 Pump, 100 PSI
66#166USP 3 Hose Clamp 3/8-7/8
67 108A 2 Hose Barb Nylon 90 3/8 X 3/8
68 925 1 Hose, Pump inlet, 3/8” x 13”
69 925 1 Hose, pump outlet, 3/8” x 48”
74 CWBLK 1 Cord Wrap, Black
75 203 4 Washer, Plastic
76 260 2 Nut, Acorn, 3/16”
77 2005D 1 Switch Plate Cobra-H1
78 FP578 3 Switch, rocker, w/cover
79 28 5 Screw, #4 x 3/8”
80 227 1 Light, Green
[ ]#4339 2 Label, Caution
[ ]#4325A 1 Label Logo 31/32 Dia.
[ ]#4325C 1 Label Heat Designation Power
[ ]#56380692 1 Label Danger Electric Shock
*#56044511 1 Literature Pack
MISCELLANEOUS PARTS
FP256 Heat repair Kit, includes cutout &
thermostat switch
NOTE: Items in kits not sold separately.
#= Revised or new since last update
[ ] = Not Shown
* = Optional, Not Included
revised 11/11

SPECIFICATIONS:
Rotomolded Body:
Vacuum:
VAC Shutoff:
Pump:
Waterlift:
Heat:
Heater:
Wand:
Weight:
Dimensions:
Lifetime Warranty
3-stage
Ball float
Demand pump, 100 psi
140”
212º F
2000 Watts
Stainless steel, single bend, twin tip
75 lbs.
25.5H x 18W x 28.75L (inches)
TROUBLE SHOOTING:
IF THIS CHECK THIS
ALWAYS UNPLUG THE MACHINE BEFORE
DISCONNECTING OR CONNECTING ANY WIRES OR
COMPONENTS.
NO SPRAY
PUMP DOES
NOT RUN
Solution tank is empty.
Clogged spray tip.
Pump not running.
Valve on wand not operating
No power to pump. Test the switch. Test the pump motor. Replace if necessary.
Debris plugging cleaning tool or vacuum hose.
Drain gate is not completely closed, or seals are damaged. Vacuum lid is not closed or gasket is damaged.
No power to motor. Test the switch. Test the vacuum motor.
Spraying too long. Try spraying for 12-15 seconds per cycle.
Heat exchanger needs to be flushed.
Wrong tool being used.
Too much water passing through, longer hose or larger diameter hose, than standard
Heat is not turned on. Either the green light must be on or the bypass switch must be turned on.
No power in the wall outlet - check to see if the breaker has tripped.
No power to the bypass switch - check wiring for ‘opens’.
No power out of bypass switch, follow troubleshooting steps to isolate the problem or call your distributor for
additional help
LOW SUCTION
NO SUCTION
LOW HEAT
NO HEAT
425-322-0133 / 800-257-7982 / FAX: [phone]
11015 - 47th Ave. W. / Mukilteo, WA 98275
VISIT US AT: http://www.usproducts.com