Windsor Dominator NMWU2250H User manual

86399150-A 01/02/15
Dominator 500 PSI 17 Gallon
Extractor
Operating instructions (ENG)
MODELS: NMWU2250H
10066670
NMWC1350N
10066680
From Serial Number (Ref No. 1*)
* See Serial number page or
call Manufacturer.

Warranty Registration
Thank you for purchasing a Kärcher North America product. Warranty registration is quick
and easy. Your registration will allow us to serve you better over the lifetime of the product.
To register your product go to :
http://warranty.karcherna.com/
For customer assistance:
1-800-444-7654
286399150 Operators Manual - Dominator 500 PSI 17 Gallon
Machine Data Label
Overview
The Dominator is an electric powered carpet extractor intended for commercial use. This appliance applies a
cleaning solution to the carpet and then vacuums the soiled water back into the recovery tank.

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Table of Contents
Machine Data Label. . . . . . . . . . . . . . . . . . . . . . . . . .2
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . .3
How To Use This Manual . . . . . . . . . . . . . . . . . . . . .4
Safety
IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . .5
HAZARD INTENSITY LEVEL. . . . . . . . . . . . . . . . . .6
Safety Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Grounding Instructions . . . . . . . . . . . . . . . . . . . . . . .8
Operations
Technical Specifications . . . . . . . . . . . . . . . . . . . . . .9
Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Machine Operation . . . . . . . . . . . . . . . . . . . . . . . . .11
Chemicals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Pre-Run Inspection. . . . . . . . . . . . . . . . . . . . . . . . .12
Equipment Set-up. . . . . . . . . . . . . . . . . . . . . . . . . .12
Heater Operation . . . . . . . . . . . . . . . . . . . . . . . . . .12
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Maintenance
Periodic Maintenance . . . . . . . . . . . . . . . . . . . . . . .14
Daily/Regular Maintenance. . . . . . . . . . . . . . . . . . .14
Vacuum Motor Replacement . . . . . . . . . . . . . . . . .15
Solution Pump Replacement . . . . . . . . . . . . . . . . .16
Pressure Regulator. . . . . . . . . . . . . . . . . . . . . . . . .17
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Suggested Spare Parts. . . . . . . . . . . . . . . . . . . . . .20
86399150 Operators Manual - Dominator 500 PSI 17 Gallon

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How To Use This Manual
This manual contains the following sections:
• How to Use This Manual
•Safety
• Operations
• Maintenance
• Suggested Spare Parts
The HOW TO USE THIS MANUAL section will tell you
how to find important information for ordering correct
repair parts.
Parts may be ordered from authorized dealers. When
placing an order for parts, the machine model and
machine serial number are important. Refer to the
MACHINE DATA box which is filled out during the
installation of your machine. The MACHINE DATA box
is located on the inside of the front cover of this manual.
The model and serial number of your machine is
located on the back of the machine.
The SAFETY section contains important information
regarding hazardous or unsafe practices of the
machine. Levels of hazards are identified that could
result in product damage, personal injury, or severe
injury resulting in death.
The OPERATIONS section is to familiarize the operator
with the operation and function of the machine.
The MAINTENANCE section contains preventive main-
tenance to keep the machine and its components in
good working condition. They are listed in this general
order:
• Maintenance
•Lubrication
• Vacuum Motor Replacement
• Solution Pump Replacement
• Troubleshooting
NOTE: If a service or option kit is installed on your
machine, be sure to keep the KIT INSTRUCTIONS
which came with the kit. It contains replacement parts
numbers needed for ordering future parts.
NOTE: The manual part number is located on the
lower right corner of the front cover.
Model:
Date of Purchase:
Serial Number:
Dealer:
Address:
Phone Number:
Sales Representative:
86399150 Operators Manual - Dominator 500 PSI 17 Gallon

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Safety
IMPORTANT SAFETY INSTRUCTIONS
When using this machine, basic precaution
must always be followed, including the following:
READ ALL INSTRUCTIONS BEFORE USING THIS MACHINE.
To reduce the risk of fire, electric shock, or injury:
Connect to a properly grounded outlet. See Grounding Instructions.
Do not leave the machine unattended. Unplug machine from outlet when not in use and before maintenance or
service.
Use only indoors. Do not use outdoors or expose to rain.
Do not allow machine to be used as a toy. Close attention is necessary when used by or near children.
Use only as described in this manual. Use only manufacturer's recommended components and attachments.
Do not use damaged electrical cord or plug. Follow all instructions in this manual concerning grounding the
machine. If the machine is not working properly, has been dropped, damaged, left outdoors, or dropped into
water, return it to an authorized service center.
Do not pull or carry machine by electrical cord, use as a handle, close a door on cord, or pull cord around sharp
edges or corners.
Do not run machine over cord. Keep cord away from heated surfaces.
Do not unplug machine by pulling on cord. To unplug, grasp the electrical plug, not the electrical cord.
Do not handle the electrical plug or machine with wet hands.
Do not operate the machine with any openings blocked. Keep openings free of debris that may reduce airflow.
This machine is intended for cleaning carpet only.
Do not vacuum anything that is burning or smoking, such as cigarettes, matches, or hot ashes.
This machine is not suitable for picking up health endangering dust.
Turn off all controls before unplugging.
Machine can cause a fire when operating near flammable vapors or materials. Do not operate this machine near
flammable fluids, dust or vapors.
This machine is suitable for commercial use, for example in hotels, schools, hospitals, factories, shops
and offices for more than normal housekeeping purposes.
Maintenance and repairs must be done by qualified personnel.
If foam or liquid comes out of machine, switch off immediately.
READ AND SAVE THESE INSTRUCTIONS
86399150 Operators Manual - Dominator 500 PSI 17 Gallon

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Safety
The following symbols are used throughout this guide as indicated in their descriptions:
HAZARD INTENSITY LEVEL
There are three levels of hazard intensity identified by signal words -WARNING and CAUTION and FOR SAFETY.
The level of hazard intensity is determined by the following definitions:
WARNING - Hazards or unsafe practices which COULD result in severe personal injury or death.
CAUTION - Hazards or unsafe practices which could result in minor personal injury or product or property damage.
FOR SAFETY: To Identify actions which must be followed for safe operation of equipment.
Report machine damage or faulty operation immediately. Do not use the machine if it is not in proper operating
condition. Following is information that signals some potentially dangerous conditions to the operator or the equip-
ment. Read this information carefully. Know when these conditions can exist. Locate all safety devices on the
machine. Please take the necessary steps to train the machine operating personnel.
FOR SAFETY:
DO NOT OPERATE MACHINE:
Unless Trained and Authorized.
Unless Operation Guide is Read and understood.
In Flammable or Explosive areas.
In areas with possible falling objects
WHEN SERVICING MACHINE:
Avoid moving parts. Do not wear loose clothing; jackets, shirts, or sleeves when working on the machine. Use
manufacturer approved replacement parts.
86399150 Operators Manual - Dominator 500 PSI 17 Gallon

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Safety
Safety Labels
NOTE: These drawings indicate the location of safety labels on the machine. If at any time the labels become
illegible, promptly replace them.
86399150 Operators Manual - Dominator 500 PSI 17 Gallon

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Safety
Grounding Instructions
THIS PRODUCT IS FOR COMMERCIAL
USE ONLY.
ELECTRICAL:
In the USA this machine operates on a standard 15
amp 115V, 60 hz, A.C. power circuit. The amp, hertz,
and voltage are listed on the data label found on each
machine. Using voltages above or below those
indicated on the data label will cause serious damage
to the motors.
EXTENSION CORDS:
If an extension cord is used, the wire size must be at
least one size larger than the power cord on the
machine, and must be limited to 50 feet (15.5m) in
length.
GROUNDING INSTRUCTIONS:
This appliance must be grounded. If it should malfunc-
tion or break down, grounding provides a path of least
resistance for electric current to reduce the risk of
electric shock. This appliance is equipped with a cord
having an equipment-grounding conductor and
grounding plug. The plug must be inserted into an
appropriate outlet that is properly installed and
grounded in accordance with all local codes and ordi-
nances.
This appliance is for use on a nominal 120-volt circuit,
and has a grounded plug that looks like the plug in "Fig.
A". A temporary adapter that looks like the adaptor in
"Fig. C" may be used to connect this plug to a 2-pole
receptacle as shown in "Fig. B", if a properly grounded
outlet is not available. The temporary adapter should
be used only until a properly grounded outlet (Fig. A)
can be installed by a qualified electrician. The green
colored rigid ear, lug, or wire extending from the
adapter must be connected to a permanent ground
such as a properly grounded outlet box cover.
Whenever the adapter is used, it must be held in place
by a metal screw.
Improper connection of the equipment-grounding
conductor can result in a risk of electric shock.
Check with a qualified electrician or service person
if you are in doubt as to whether the outlet is
properly grounded. Do not modify the plug
provided with the appliance - if it will not fit the
outlet, have a proper outlet installed by a qualified
electrician.
86399150 Operators Manual - Dominator 500 PSI 17 Gallon
USING AN ADAPTOR
GROUNDING CONNECTION
Note: Adaptors are not allowed in Canada.
Outlet
Tab for Grounding
Outlet Box
FIGURE C
Grounded
FIGURE A
Adaptor
Screw
FIGURE B
Adaptor
Metal Screw
Grounded
Grounding Pin

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Operations
Technical Specifications
This appliance is not intended for use by persons (including children) with reduced physical, sensory or
mental capabilities, or lack of experience or knowledge, unless they have been given supervision or
instruction concerning use of the appliance by a person responsible for their safety.
MODEL ITEM MEASURE
ALL
Electrical 115 Volt, 60 hz, 15A
Solution Pump 500 psi
Solution Capacity 17 Gal
Recovery Capacity 14 Gal
Height 43 inches
Length 32.5 inches
Width 22.5 inches
10066670
Vacuum Motor Dual 2 Stage
Weight- Empty 139 lbs
Weight-Full Solution 282 lbs
Power cord 2 X 25 feet
Heater 1850 watts
10066680
Vacuum Motor Single 3 Stage
Weight- Empty 122 lbs
Weight-Full Solution 265 lbs
Power cord 1 X 40 feet inline GFCI
Height
Length
Width
86399150 Operators Manual - Dominator 500 PSI 17 Gallon

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Operations
Controls
1. Vacuum Accessory Tool Hook-up
2. Solution Pump Switch
3. Vacuum 1 Switch
4. Vacuum 2 Switch (Dual Vacuum Units Only)
5. Heater Switch with On Light (Units w/Heat Only)
6. Pressure Gauge
7. Adjustable Pressure Relief Valve
8. Heater Temperature Light (Units w/Heat Only)
9. Breaker for Vacuum 2 (Dual Vacuum Units Only)
10. Breaker for Vacuum 1
11. Solution Accessory Tool Hook-up
86399150 Operators Manual - Dominator 500 PSI 17 Gallon
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