U.S. Products COBRA-300H Operating instructions

06.04.2007
COBRA®-300H
EXTRACTOR
120V
INFORMATION
&
OPERATING
INSTRUCTIONS
DO NOT OPERATE MACHINE UNTIL YOU HAVE READ
ALL SECTIONS OF THIS 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 130º F/54º C in the solution tank.

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, indoors.
•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 130º F/54º C 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 cord, use the cord as a handle, close a door on the cord, or pull the
cord around sharp edges or corners. Do not run the machine over the cord. Keep
the cord 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 present.
•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.

INSPECTION:
Carefully unpack and inspect your COBRA-300H 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 damage to the box or to the machine or
parts.
CLEANING SOLUTIONS:
We recommend liquid cleaning chemicals, such as our Magic Fabric Cleaner. 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 6 and 9 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. U.S. Products’ “X-1500” is recommended.
The vacuum motor, pump motor, and the pump do not require any scheduled maintenance;
however, the motors may require replacement brushes after 1000 - 1500 hours, and the pump
and bypass valve may require rebuild kits after 1000 - 1500 hours, typically (refer to machine
part list for numbers) 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.
(and be sure to mail your warranty card)
Serial Number: __________________
Model: COBRA-300H
Purchase Date:_____________
Write the name and phone number of your
distributor:
_____________________________________
_____________________________________

HOLDING TANK LID SWITCH PLATE LID (RECOVERY TANK)
VAC INTAKE
LATCH (2)
DRAIN GATE
QUICK-DISCONNECT
CASTOR
VENT
WHEEL
VACUUM (1), PUMP (2)SWITCHES:
These switches are powered by cord #1. Switches are on when illuminated.
CARPET/UPHOLSTERY SWITCH (3):
This switch is also powered by cord #1. The carpet setting (down position) is high pressure
(approximately 300 PSI). The upholstery setting (up position) is low pressure (approximately
50 PSI with a K1 or V2 spray tip).
BYPASS SWITCH (4):
The bypass switch will illuminate when it is turned on, and it will completely bypass the circuit
locator system. Use this feature only when the circuit locator light will not operate and you
know each cord is on a separate circuit, otherwise a circuit breaker may trip.
CIRCUIT LOCATOR (5):
When this light is on, it indicates that cord #2 (identified by the red “H”) is on a separate line
from cord #1. Cord #2 supplies voltage to the heater.
PRIMING HOSE IN
POSITION FOR PRIMING
1234
VAC 1 PUMP
CARPET
BYPASS
CIRCUIT
LOCATOR
5
UPHOLSTERY

SET-UP:
Fill the holding tank with clear water and the detergent of your choice. Mix well. Although
this machine is designed to supply instant hot water, the addition of warm (not exceeding
130º F/54º C) to the holding tank would efficiency of the heater.
1. Plug in cord #1. Attach the priming hose to the machine (see illustration on previous
page). Turn the pump on and set the switch to the upholstery setting. Run until the
pump is fully primed, then turn off the pump. Remove the priming hose, and
attach the cleaning hoses and tool.
2. Turn on the pump, and spray through the cleaning tool for a few seconds to fill the lines
with solution.
3. Plug in cord #2 (identified by a red “H” on the back of the extractor). IF THE GREEN
LIGHT ILLUMINATES, THE HEAT EXCHANGER WILL TURN ON AUTOMATICALLY
(SEE NOTE BELOW). Wait 2 minutes for the heat exchanger to reach operating
temperature. You may now begin cleaning. It will take about 10 seconds for the initial
heat to reach the wand.
NOTE: If the green circuit indicator light does not illuminate when cord #2 is
plugged in, then both cords are on the same circuit. Try other outlets until the
light comes on. See bypass switch section (below) if you are unable to get a green
light.
ELECTRIC CIRCUIT LOCATOR:
This unique, patented “smart system”, operated by a solid state circuit, will inform the
operator when the two cords are plugged into separate lines by illuminating the green
indicator light. This helps prevent tripping circuit breakers
BYPASS SWITCH:
The bypass switch completely bypasses the circuit locator system. 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 circuit breaker may blow.
BALL FLOAT VAC SHUTOFF:
When the recovery tank is full, the float system will shut off the incoming air flow and prevent
water from entering the vacuum motors. The float may not work properly if the float filter is
clogged or if there is foam in the tank.
CAUTION: To avoid vac motor damage, always make sure the float filter is clean
and the ball travels freely before turning on the machine, and use a defoamer
whenever foam is present.

07/22/2005
COBRA-300H
120V
7
5
6
4B
3
4
1
4A
2
11
10
12 13 14
16
15
15
16A 17 18
19
20
21
22
23
24
25
26
27
28
29
3233
34 35
36
37
38
39
32
32
45
41
42
43
44
46
47
57 58 47
48
48
59
60
61
62
63
64
65
66
67
39
68
69
70 71
72
80
79
78
77
76
75
74
48 49
50
52
51
53
54
55
56
81
82
58
48
48
48
55 83
84
84
85
86
93
88
87
89
91 87
92
95
94
93
48
85
93
96
97
98
98
91
99
100 101
98
91
102
35A
35
Priming Hose
72A
9A
9
8
9A
73
64A
103

8-05-2005
COBRA-300H 120V
PARTS LIST
#1 903 Drain Gate (see Misc.)*
#2 21 Screw, Button Head, 10/32 X 5/8”
#3 908 Latch
#4 187 O-Ring, Small
#4A 190 O-Ring, Large
#4B 185 Nut, 1-1/2”
#5 FP208 Vacuum Tank, Complete, Cobra
#6 907 Hose Barb, 1-1/2"
#7 922 PVC Elbow, 1-1/2"
#8 1074 Gasket (Machines made after 2-15-05)***
#9 2086 Lid and Ring (Machines made after 2-15-05)***
#9A FP436 Chain and Hardware
#10 924 Float, Ball & Cage
#11 FP193 Ball Float Assembly, Complete
#12 185 Nut, 1-1/2”
#13 190 O-Ring, Large
#14 922 PVC Elbow, 1-1/2"
#15 156 Hose Clamp, (size 28)
#16 FP171 Hose, Vacuum, Rubber, 2” x 20"
#16A FP171D Hose, Vacuum, Rubber, 2" x 19"
#17 FP323 Vacuum Motor, 3-stage, w/Connectors
#18 7 Nut, jam, 5/16”
#19 15 Washer, flat
#20 194 Split Ring
#21 FP233 Chain, 13"
#22 320AB Nut, Finish, 5/16”
#23 34 Washer, Split lock
#24 179 Bolt, 5/16 x 4”
#25 959 Gasket, Vacuum Motor
#26 MA-6 Manifold, Vacuum
#27 931 Mounting Track, Circuit Board
#28 923B Circuit Board, Dual Cord Sensor****
#29 FP220 Flange, Exhaust, w/Hose & Hardware
#32 928 Louver, 3" (includes screws)
#33 909A Latch Strike, for Latch, S/S
#34 45 Quick Disconnect, 1/4 n.p.t.
#35 115 Washer, Fiber
#35A 116 Bushing, Fiber
#36 31 Washer, Brass
#37 5 Bolt, 1/4-20 x 3/4”
#38 2002 Castor, Swivel, 3"
#39 8 Lock Nut, 1/4-20
#41 2001B Label
#42 27A Axle Cap, Black
#43 2003 Wheel, 8"
#44 910 Axle, 18-13/16"
#45 BS-6 Base, Cobra, Black
#46 FP439 Gasket, Cobra Base
#47 92A Nipple, S/S, 1/4 p.t.
#48 91 Elbow, Brass
#49 2023A Hose Assembly, Heater Outlet, 29-1/2"
#50 FP159D Heat Exchanger, Complete
#51 455 Mount, Heat Exchanger
#52 76 Hose Clamp
#53 103 Elbow, 1/8 f.p.t. x 1/8 m.p.t.
#54 224 Hose Assembly, 8"
#55 222 Quick Disconnect, Female, Open, 1/8 p.t.
#56 951 Pressure Gauge, 2-1/2”
#57 219 Quick Disconnect, Male, 1/4 p.t.
#58 222 Quick Disconnect, Female, Open, 1/8 p.t.
#59 2B1 Screw, 6/32 x 2-1/4”
#60 2015 Guard, Fan
#61 2014 Fan, Cooling
#62 16 Locknut, 6/32”
#63 937 Reducer, PVC
#64 184 Cord Retainer
#64A 495A Power Cord, 25’, Yellow
#65 918 Heat Sink Plate
#66 (see Misc.) Thermistor Control with Potentiometer **
#67 4 Bolt, 1/4-20 x 1”
#68 HT-2 Holding Tank
#69 CWBLK Cord Wrap, Black
#70 203 Washer, Plastic
#71 260 Nut, Acorn, 3/16”
#72 207A Filter, Pump Inlet, 40 Mesh, S/S
#72A 92B Nipple, PVC, 1/2 N.P.T.
#73 901 Lid, Holding Tank
#74 FP312 Switch, Bypass
#75 FP311 Switch, Carpet/Upholstery
#76 FP311 Switch, Pump
#77 FP311 Switch, Vacuum
#78 78 Light, Green (small)
#79 28 Screw, #4 x 3/8”
#80 2005E Switch plate
#81 210 Snubber, Pressure
#82 944 Hose, Pulsation Dampening, 28"
#83 97 Bushing, Brass
#84 223 Quick Disconnect, Male, 1/8" Pipe Thread
#85 168 “T”, Brass
#86 221 Quick Disconnect, Male, Open, 1/4 p.t.
#87 165 Hose Barb
#88 950 Pump, Raw, See Misc.
#89 FP170A Hose, Pump Inlet, 1/2" X 16"
#91 166 Hose Clamp
#92 211 Plug, Brass
#93 92A Nipple, 1/4 p.t., S/S
#94 2060 Motor, for Pump (120V)
#95 2061 Mount Plate, Pump Motor
#96 105 Reducer Nipple, Brass
#97 FP238 Bypass Valve, Complete for Cobra-300H
#98 164 Hose Barb
#99 FP169E Hose, 3/8" X 8"
#100 208 Hose Barb, Brass 1/8 p.t. x 3/8 hose
#101 2062 Solenoid (without fittings)
FP230 Solenoid (with fittings)
#102 FP169C Hose, Pump Bypass, 3/8" X 18"
#103 SYP1 Priming Hose Assy
MISCELLANEOUS ASSEMBLIES/PARTS
*FP231 Drain Gate Assembly, Complete (with
o-rings & nut)
FP167F Pump Complete (NO motor, solenoid, or
hoses)
FP212B Pump & Motor Complete (NO solenoid,
mount bracket, mount bracket or hoses)
950 Cam/Bearing Assembly
291 Bypass Valve Rebuild Kit
229 Valve/O-Ring Kit, for 300 PSI pump
250 Piston/Seal Kit, for 300 PSI pump
**FP194A Thermistor Control Kit with Potentiometer &
Probe & Circuit Board
**FP194C Thermistor Control Kit with Potentiometer, Probe
& Thermal Cutout & Circuit Board
***FP201 Dome, Vacuum (Machines made before 2-15-05)
***2009 Gasket for Dome (Machines made before 2-15-05)
***FP2008 Dome & Gasket Complete (Machines made
before 2-15-05)
****923 Circuit Board, Dual Cord Sensor (Machines made
before 7-21-05)
(NOTE: Items in kits not sold separately.)
ITEM # PART # DESCRIPTION ITEM #PART # DESCRIPTION

208-772-0573 • 800-257-7982 • FAX: [phone]
Coeur d’Alene, Idaho
VISIT US AT: http://www.usproducts.com
SPECIFICATIONS:
Rotomolded Body:
Vacuum:
VAC Shutoff:
Pump:
Waterlift:
Heat:
Heater:
Wand:
Weight:
Dimensions:
Lifetime Warranty
One, 3-stage, 7.2”
Ball float
Positive displacement, 300 psi carpet, 75 psi upholstery
140”
212º F
2000 Watts
Stainless steel, double bend, twin tip
99 lbs.
26.5H x 18W x 28.75L (inches)
TROUBLE SHOOTING:
IF THIS OCCURS CHECK THIS
NO SPRAY
PUMP DOEN’T 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 motor directly to AC power.
Debris plugging cleaning tool or vacuum hose.
Drain gate is not completely closed, or seals are damaged.
Vacuum lid is not closed tight.
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, larger diameter hose, or larger
spray tip), 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 power cord for ‘opens’. No power out of
bypass switch, follow troubleshooting steps to isolate the problem.
Call your distributor for additional help.
LOW SUCTION
NO SUCTION
LOW HEAT
NO HEAT