The Ninja 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.
Warranty Registration
Thank you for purchasing a C400 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:
www.century400.com/support/warranty/register.php
For customer assistance:
1-800-776-2436
2
NINJA INTL 86038610 05/25/11
Machine Data Log/Overview.........................2
Table of Contents..........................................3
HOW TO USE THIS MANUAL
How to use this Manual.................................1-1
SAFETY
Important Safety Instructions........................2-1
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 to the inside of the front cover
of this manual.
The model and serial number of your machine is on
the front of the Frame.
SERIAL # TAG
1-1
NINJA INTL 86038610 05/25/11
The SAFETY section contains important information
regarding hazard or unsafe practices of the
machine. Levels of hazards are identified that could
result in product or 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
maintenance 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
The PARTS LIST section contains assembled parts
illustrations and corresponding parts list. The parts
lists include a number of columns of information:
- REF – column refers to the reference
number on the parts illustration.
- PART NO. – column lists the part
number for the part.
- PRV NO. – reference number.
- QTY – column lists the quantity of the
part used in that area of the machine.
- DESCRIPTION – column is a brief
description of the part.
- SERIAL NO. FROM – column indicates
the first machine the part number is
applicable to. When the machine design
has changed, this column will indicate
serial number of applicable machine.
The main illustration shows the most
current design of the machine. The
boxed illustrations show older designs.
- NOTES – column for information not
noted by the other columns.
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 number on the lower left corner of the
front cover is the part number for this manual.
SAFETY INSTRUCTIONS
!
IMPORTANT SAFETY INSTRUCTIONS
When using an electrical appliance, basic precaution
must always be followed, including the following:
READ ALL INSTRUCTIONS BEFORE USING THIS MACHINE.
This machine is for commercial use.
To reduce the risk of fire, electric shock, or injury:
WARNING:
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.
SAVE THESE INSTRUCTIONS
NINJA INTL 86038610 03/29/07 2-1
HAZARD INTENSITY LEVEL
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
WARNING - Hazards or unsafe practices which COULD result in severe personal injury or death.
!CAUTION
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 equipment. 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.
.
2-2
NINJA INTL 86038610 03/29/07
SAFETY LABEL LOCATION
NOTE: These drawings indicate the location of safety labels on the machine. If at any time the labels be come
illegible, promptly replace them.
LABEL WARNING
86242230
PRV NO. 500009
LABEL CIRCUIT INTERRUPTER
NINJA INTL 86038610 03/29/07
86200570
PRV NO. 170-41
2-3
GROUNDING INSTRUCTIONS
THIS PRODUCT IS FOR COMMERCIAL USE
ONLY.
ELECTRICAL:
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
malfunction 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 ordinances.
Improper connection of the equipmentgrounding 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.
2-4
NINJA INTL 86038610 03/29/07
THIS PAGE LEFT BLANK INTENTIONALLY
NINJA INTL 86038610 03/29/07
2-5
TECHNICAL SPECIFICATIONS
ITEM MEASURE
ELECTRICAL 230 Volt, 50 hz
Vacuum Motor Dual 2 stage
Solution Pump 200 psi
500 psi
Solution Capacity 10 gal (38 L)
Recovery Capacity 8 gal (240 kg)
Weight- Empty 110 lbs (240 kg)
Weight-Full Solution 200 lbs (440 kg)
Height 36 inches (91.44 cm)
Length 29 inches (73.66 cm)
Width 19.5 inches (49.53 cm)
Power cord 22 feet (6.71 m)
LENGTH
BY
CENTURY 400
PUMP
VACUUM #1
VACUUM #2
WIDTH
HEIGHT
3-1
NINJA INTL 86038610 03/29/07
CONTROLS
BY
CENTURY 400
1
2
3
1. Pump Switch
2. Vacuum #1 Switch
3. Vacuum #2 Switch
NINJA INTL 86038610 03/29/07
3-2
MACHINE OPERATION
PRE-RUN INSPECTION
1. Check all fittings and connectors for proper
assembly.
2. Check all hoses for leaks. Repair or replace
any damaged hoses.
3. Check power cord(s) for any damage. If
damaged, replace.
EQUIPMENT SET-UP
1. Plug power cord from machine into properly
grounded wall outlet.
2. Turn vacuum motor switch on and off to
make sure there is electrical power at
machine.
3. Connect vac hose to machine. Slide the
swivel cuff over the outlet on the tank.
4. Connect the hose to your machine and
wand. Pull back the knurled collar on the
quick disconnect coupler and push onto the
connection on the chassis. To avoid leaks,
check to be that a positive connection was
made.
5. Using a clean container, fill the solution tank
with clean hot water. Mix in a non-foaming
cleaning concentrate for use in hot water
extraction machines, following the
manufacture’s instructions printed on
container.
NOTE: When using a powder cleaner, pre-mix
with hot water in a clean container before adding
to the solution tank.
6. Turn pump and vacuum switch(s) to the on
position.
1. Press lever (located above the accessory
connection; front of machine) toward
machine.
2. Do this for 30 seconds or until there is a
steady flow of water flowing through the sight
tube. (located on right side of recovery tank.)
3-3
NINJA INTL 86038610 03/29/07
EMPTYING AND CLEANING
Always use
defoamer if foaming
occurs. Foam will
suspend large particles that may damage
vacuum(s) as well as allow liquid into the
vacuum motor(s) without activating the float
shutoff.
1. Before proceeding, make certain that the
nozzle is functioning properly.
a. To check, hold the wand about one foot
above the surface to be cleaned and
open the wand valve. A full spray should
be observed from the nozzle.
b. If the nozzle is not showing a full spray
pattern, adjust nozzle for proper pattern,
clean, or replace nozzle.
2. Normally, chemical is applied on the push
stroke of the wand when cleaning.
Vacuuming is done on the pull stroke. For
heavily soiled carpets the wand may be used
in a scrubbing manner, applying chemical in
both the push and pull stroke.
3. When cleaning, keep the working opening
(wand mouth) flat on the surface being
cleaned. Keep the wand moving when the
valve is open.
4. The shutoff float inside the vacuum tank will
impede the vacuum flow when the vacuum
tank is full.
When this occurs, empty the vacuum tank by
opening the dump valve and dispose of the
waste in a proper manner.
5. Once the vacuum tank has been emptied,
you may once again proceed with cleaning
DAILY MAINTENANCE
Unplug power cord(s)
before servicing or
making any repairs
.
1. Flush the entire system, including floor tool,
hand tool, etc., with 1 to 3 gallons of clean, hot
water.
2. Vacuum out the solution tank.
3. Rinse tank with fresh water. Periodically
inspect the recovery tank and decontaminate if
necessary, using a Hospital Grade Virucide or
a 1-10 bleach to water solution. Wastewater
should be disposed of properly.
4. Occasionally check filter screen at the bottom
of the solution tank and rinse clean with hot
water if necessary.
5. Inspect hoses for wear. Frayed or cracked
hoses should be replaced to avoid vacuum or
solution pressure loss.
6. Inspect power cord for wear or damage. This
cable will lie on wet carpet. To prevent
electrical shock replace cords that are frayed
or have cracked insulation immediately.
7. Clean all dirt and obstructions from drain valve
and gaskets to prevent possible leakage and
premature wear.
8. Run clean water through solution pump when
work is complete.
9. Empty both tanks and rinse, run vacuum (s) for
at least one minute to dry motor(s).
10. Store with access covers removed to allow
tanks to dry.
DO NOT attempt to
repair hose!
Repairing highpressure hoses may result in severe burns and
serious injury.
PERIODIC MAINTENANCE
1. Twice a month, flush a white vinegar solution
(One quart vinegar to two gallons of water) or
anti-browning solution (mixed as directed)
through the extractor, turning pump switch
on/off several times, flush with clean water.
This will prevent build-up of alkaline residue in
the system.
MAINTENANCE
2. Check hoses for wear, blockages, or damage.
Frayed or cracked hoses should be repaired or
replaced to eliminate vacuum or solution
pressure.
3. Check all handles, switches, knobs, electrical
cables and connections on your machine for
damage. If the cable insulation is broken or
frayed, repair or replace it immediately. Don’t
take chances with electrical fire or shock.
4. Clean out solution tank. Remove and clean
solution screen.
5. Clean outside of all tanks and check for
damage.
MONTHLY MAINTENANCE
1. Check all bearings for noise and wear.
2. Check all gaskets for wear and leakage.
3. Check pump pressure; observe spray pattern
and check gauge if necessary.
4. Check overall performance of machine.
SEMI-ANNUALLY
1. Check vacuum motor brushes.
LUBRICATION
For pressure regulator and pump cam lubrication,
use a light silicone lubricant which will not damage
o-rings. A small tube (86246790 – PRV NO.
51391) is supplied with your machine.
STORAGE
Thoroughly clean machine if it is to be stored. You
must protect this machine from freezing while in
storage.
By using the Self Priming Lever you may help clear
out all water lines.
Make sure both recovery and solution tanks are
empty. Turn on both vacuum switches and press
lever. All water should be removed and sprayed
into the recovery tank.
Empty the remaining water and wipe dry.
HEAT MODELS ONLY: Be sure to thoroughly
drain water out of heater lines prior to storage in
colder climates. This heater will freeze and
possibly crack voiding your warranty.
NINJA INTL 86038610 03/29/07
4-1
MAINTENANCE
Only qualified
maintenance personnel
are to perform the
following repairs.
VACUUM MOTOR REPLACEMENT
1. Turn off all switches and unplug machine.
2. Remove recovery tank.
3. Locate the vacuum motor wires and disconnect
at the connector.
4. Remove the vacuum motor.
5. Reverse process to install vacuum motor.
SOLUTION PUMP REPLACEMENT
1. Turn off all switches and unplug the machine.
2. Remove recovery tank.
3. Remove solution hoses from fittings in pump.
4. Remove the screws that fasten the pump to the
frame.
5. Reverse process to install pump.
Vacuum Motor Carbon Brushes Replacement (Ametek)
End Cap
Carbon
Brushes
WARNING: The green
ground wire must be
attached for safe operation.
See wiring diagram.
Note: When replacing carbon brushes loosen wire terminal
BEFORE removing screws on bracket.
Wire
Terminal
Note:
Place
stop in
groove.
Vacuum Motor Carbon Brushes Replacement (Windsor)
End Cap
Carbon
Brushes
If armature commutator is grooved, extremely pitted or not
concentric, the motor will need to be replaced or sent to a
qualified service center.
Important:
These brushes wear quicker as the length shortens due to
increased heat. Spring inside brush housing will dama ge
motor if brushes are allowed to wear away completely.
WARNING: The green
ground wire must be
attached for safe operation.
See wiring diagram.
If armature commutator is grooved, extremely pitted or not
concentric, the motor will need to be replaced or sent to a
qualified service center.
Important:
These brushes wear quicker as the length shortens due to
increased heat. Spring inside brush housing will dama ge
motor if brushes are allowed to wear away completely.
Wire Terminal
3/8 (9.5mm)
Periodically check the length of the carbon brushes. Replace
both carbon brushes when either is less than 3/8" (9.5mm)
long.
3
[9.5mm]
8
Periodically check the length of the carbon brushes. Replace
both carbon brushes when either is less than 3/8" (9.5mm)
long.
4-2
NINJA INTL 86038610 03/29/07
PUMP REPLACEMENT KITS
200 PSI
CAM & BEARING KIT
862011470
PRV NO. 250-79G
PLUNGER & SEALS KIT
86201150
PRV NO. 250-79E
MAINTENANCE
VALVE & O-RINGS KIT
86201160
PRV NO. 250-79F
PUMP REPLACEMENT KITS
500 PSI
PLUNGER & SEALS KIT
PRV NO. 250-75A
CAM & BEARING KIT
PRV NO. 250-73C
86201080
86201040
VALVE & O-RINGS KIT
(BOTH SIDES)
86201030
PRV NO. 250-73B
NINJA INTL 86038610 03/29/07
4-3
MAINTENANCE
PRESSURE REGULATOR
For best results with the pressure regulator, we recommend that you clean and lubricate
the piston and u-cup with Superlube lubricant monthly or when pressure drop seems excessive.
1. Turn unit off before lubricating.
2. Remove cap, spring and spring retainer plate.
3. With fingertips remove piston and u-cup.
4. Wipe piston and u-cup clean of any film or scale.
5. Lubricate the piston and u-cup with Superlube.
6. Reassemble regulator.
7. With pump ON, re-adjust pressure regulator for normal operation.
LUBRICATE U-CUP WITH SUPERLUBE MONTHLY.
U-CUP
SPRING RETAINER PLATE
4-4
OUT
IN
PISTON
NINJA INTL 86038610 03/29/07
SPRING
CAP
PROBLEM CAUSE SOLUTION
TROUBLESHOOTING
Loss of Power
Electrical shock
Vac motor speed varies
or doesn’t run
Loss of vacuum
Pump runs no solution
Pump runs, loss of
pressure
Pump will not run
Solution hose fitting hard
to connect
Carpet not getting clean Severe soil conditions
Carpet too wet Over saturation
Carpet browning
Solution not flowing
properly
Dead electrical circuit Check building circuit breaker or fuse box.
Faulty power cord Replace
Equipment not grounding Follow grounding instructions exactly
Receptacle not grounded Contact an electrician to check building’s wiring
Internal wiring problem
Worn motor brushes Replace
Motor worn out Replace
Faulty switch Replace
Loose vacuum dome Center and seal dome over tank
Crack in dome of poor joint Replace or repair using acrylic plastic cement only
Lint or dirt clogging
vacuum screen
Loose cuffs on vacuum
hose
Vac motor seals leaking Replace
Floor tool vac chamber
clogged
Vac motor, hose, or dome
gasket
Pump inlet screens
plugged
Pump air locked
Internal or external
solution line damaged and
leaking
Jet orifice on cleaning
wand is to large
Internal pump components
wearing out
Note: Operation of pump using a wand or hand tool with an orifice of less than .06
will cause pump to cavitate or pulsate and could result in premature wear of pump
components.
Check valves in pump
head for particles or cuts in
seals
Unit not plugged in Connect unit to 3 prong grounded outlet
Loose wiring See dealer
Corrosion on fittings.
Leaving carpet too wet Check for loss of vac pressure
Too much chemical Check label for correct solution concentration
Light carpet with no brown
prevention
Solution hose connection Check for positive connection
Faulty pump Repair or replace
Faulty floor tool valve Repair or replace
Faulty pump switch Repair
Have a trained service technician check machine’s
wiring
With power off clean screen
Tighten cuffs turning counterclockwise
Wash out with hose. Pick lint out with a wire
Replace
Clean inlet screens
Press trigger to open valve on cleaning wand to
relieve air
Replace
Total jet opening for 100 psi should be .06 to .08
Replace, see pump kit components (pg 4-3)
Take piston from BPR and lubricate with Superlube.
If problem still exists change BPR kit
Clean with steel wool. Soak in acetic acid (white
vinegar). Lubricate lightly with silicone base lubricant.
Make several passes at right angles to each other.
Use a pre-spray.
Adjust solution pressure to lower settings. Make
several passes without spray
Go over carpet with browning prevent only
NINJA INTL 86038610 03/29/07
4-5
FRAME GROUP (200 PSI)
2
3
10
11
6
4
26
5
27
6
1
8
7
7
24
25
23
22
4
21
9
19
28
4
20
18
15
12
13
14
P
F
M
F
O
U
P
N
O
N
O
C
N
I
0
0
4
Y
N
R
O
U
T
N
E
C
16
F
F
O
F
F
O
17
11
5-1
NINJA INTL 86038610 03/29/07
FRAME GROUP (200 PSI)
REF PART NO. PRV NO. QTY DESCRIPTION
1 86274040 70076 4 SCR, 10-32 X 1.0 PFHMS SS
2 86006700 70232 4 SCR, 10-32 X 3/8 FHMS SS
3 86200010 140-01 1 HINGE SET CHROME
4 86279190 87095 10 WASHER, #10 FLAT PLTD
5 86005640 57030 4 NUT, 10-32 HEX NYLOCK
6 86201300 280-03 4 RIVET ALUMINUM 3/16 X 3/4
7 86198460 20008 2 CLAMP, 5/8 NYLON UL/USA
8 86202230 390-09A 1 WASHER 9/16 S/S USS-THICK