KENT C4-100A Operating instructions

Maintenance & Repair Manual
Models:C4-100A, C4100LM & C4-
UPBLMDeepCleaningExtractors

7001

TABLE OF CONTENTS
PAGE
INTRODUCTION When the Machine is Delivered 1
Before Operating the Machine 1
IMPORTANT SAFETY INSTRUCTIONS General Instructions 1
Warnings 2
Grounding Instructions 2
CARPET CLEANING INSTRUCTIONS 3-4
UPHOLSTERY CLEANING INSTRUCTIONS After Each Use of Machine 4
MACHINE OPERATION TROUBLESHOOTING Loss of Electrical Power 5
Loss of Vacuum 5
Little or No Suction 5
Streaking/Lack of Water Pressure 5
No Brush Movement 5
RETURNING C-4 TO RENTABLE CONDITION 6
6 MONTH INSPECTIONAND SERVICE 6
SERVICE WARNINGS 6
WARRANTY 5
REPAIR TROUBLESHOOTING GUIDE Electrical System 7
Vacuum System 8-9
Pump System 10-11
Brush System 11-12
REPAIR MANUAL Removing the Vacuum and 13
Brush Assemblies
Replacing the Vacuum Motor 13
Replacing the Brush Motor 13
Replacing the Pump Motor 14
Removing the Brush Assembly 14
Servicing and Rebuilding the Brush 14
Replacing the Front Nozzle Clip 14
Replacing the Rear Nozzle Clip 15
Replacing the Trigger Switch 15
Replacing the Rocker Switch 15
Replacing Terminals 15
Wiring Lever Nuts 15
Coupler Repair 16
Replacing Drain Tube 16
Testing Lid 16
PARTS DIAGRAM 17-40
CONTACT INFORMATION:
custom[email protected]
Order Desk: 800.573.8066 Phone: [phone] Fax: [phone]
Kent Investment Corp.
Mailing Address: PO Box 279 Ash Flat, AR 72513
Shipping Address: 250 Hwy 62-West Ash Flat, AR72513

INTRODUCTION
BEFORE YOU USE YOUR OWNER'S MANUAL, PLEASE READ THIS INTRODUCTION ALL
THE WAY THROUGH.
WHEN THE MACHINE IS DELIVERED:
Check the carton carefully for signs of damage and rough handling. Remove the machine from the carton.
If the machine is damaged, notify the carrier immediately and request an inspection. Be sure to keep the
carton, packing list and carrier's receipt until the inspector has verified yourclaim.
Kent Investment's liability ceases when the shipment is picked up by the carrier, but our customer service
staff will be glad to furnish any information needed in connection with the claim and will expedite repair of
the machine.
BEFORE OPERATING THE MACHINE
Read the manual carefully before operating Model C-4. The manual has important information for the use
and safe operation of the machine. Keep this manual handy at all times. Model C-4 will assure years of
satisfactory service if operated and maintained according to recommendations in this manual. Ifadditional
technical information is needed, please contact Kent Investment Corporation at 870.994.3535.
All information and specifications printed in this manual and parts list are current at the time of printing;
however, because of Kent Investment's policy of continual product improvement, we reserve the right to
make changes at any time withoutnotice.
WARRANTY: See page 5 of this manual for limited warranty.
THIS MACHINE IS FOR COMMERCIAL USE.
IMPORTANT SAFETY INSTRUCTIONS
When using an electrical appliance, basic precautions should always be followed, including
the following:
READ ALL INSTRUCTIONS BEFORE USING MODEL C-4.
GENERAL INSTRUCTIONS
This floor finishing machine shall be grounded while in use to protect the operator from electric shock. The
machine is provided with a three-conductor cord and a three-contact grounding type attachment plug to fit
the proper grounding type receptacle. The green (or green and yellow) conductor in the cord is the
grounding wire. NEVER connect this wire to other than the grounding pin of the attachment plug.
1

WARNING - TO REDUCE THE RISK OF FIRE, ELECTRICAL SHOCK, PERSONAL INJURY OR
DAMAGE TO MODEL C-4:
1. DO NOT leave appliance when plugged in. Unplug from outlet when not in use and before servicing.
2. To reduce the risk of electrical shock - DO NOT expose to rain. Storeindoors.
3. This machine is intended for carpet and upholstery cleaningonly!
4. Fill tank with machine bucket only! Machine must be emptied after 3 1/2 gallons of water and solution have
been used.
5. DO NOT allow to be used as a toy. Close attention is necessary when used by or near children.
6. Use only as described in this manual. Use only Kent Investment Corp. recommended attachments and
chemicals.
7. DO NOT use with damaged cord or plug. If appliance is not working as it should, has been dropped,
damaged, left outdoors, or immersed in water, contact Kent Investment Corporation service department for
serviceinstructions.
8. DO NOT pull or carry by cord, use cord as a handle, close door on a cord, or pull cord around sharp edges or
corners. DO NOT run equipment over cord. Keep cord away from heatedsurfaces.
9. DO NOT unplug by pulling on cord. To unplug, grasp the plug, not thecord.
10. DO NOT handle plug or equipment with wethands.
11. DO NOT put any object into openings. DO NOT use with any openings blocked; keep free of dust, lint, hair,
and anything that may reduceairflow.
12. Keep hair, loose clothing, fingers and all parts of body away from openings and moving parts.
13. DO NOT vacuum anything that is burning or smoking, such as cigarettes, matches, or hotashes.
14. DO NOT use without filter screens inplace.
15. Turn off all controls beforeunplugging.
16. Use extra care when cleaningstairs.
17. NEVER vacuum solvents, gasoline or other hazardous liquid or solid material or use in areas where they may
be present.
18. Connect to a properly grounded outlet only. See grounding instructions.
GROUNDING INSTRUCTIONS
This machine is for use on a nominal 120-volt circuit and
has a grounding plug that resembles the plug illustrated
in sketch (A) (RIGHT). Make sure that the machine is
connected to an outlet having the same configuration as
the plug. No adapter should be used with thismachine.
FOR CUSTOMERS IN CANADA:
CAUTION! To prevent electrical shock, do not use this polarized AC plug with an extension cord, receptacle or other
outlet unless the blades can be fully inserted to prevent blade exposure.
2

HAND T OOL
ON
OFF
CLEANING DIRECTIONS
Preparing Carpet & Upholstery
1) Vacuumcarpetorupholsterywithyourhomevacuumcleaner.Thismachineisnotavacuumcleaner.
NOTE: Werecommendvacuumingcarpetthoroughly,makingfourpasseswithaCRIapprovedvacuumcleaner.
2) Pre-treatgeneralspotswith 7IN1CarpetCare .Pre-treatpet&acidbasedspotswith 7IN1Spot&OdorPetFormula .
Pre-treatheavilysoiledareasofcarpet,hallways,doorwaysandaroundfurniturewith 7IN1Hi-TrafficPre-Treatment .
Note: Readandfollowall 7IN1 labeldirectionspriortouse.
1) Pull“T” HandleonmachineHandle.
2)Raise machine Handle to desired
height.
1) Pull down BucketHandle.
2) Lift theLid.
3) Remove the Bucket.
1) Readandfollowall7IN1CarpetCare
directions.Mix7IN1withwaterinBucket
according to Quick Dry directions.
Note:DonotfillBucketabovetopfillline.
Warning:Donotusebleach
ordyeinthismachine.
Userwillbeliablefor
alldamages.
1) Important: Pour contents of
BucketintomachineSolutionTank.
1) ReturnBuckettoSolutionTank.
2) CloseLid.
3) SnapBucketHandleintoplace.
1) Turn all switchesOFF.
1)Pluginmachinetoa
grounded outlet. See
Grounding Instructions.
1) Tiltthemachinebackandmoveinto
the startingposition.
2) Turn ON the SuctionSwitch.
Note:HandToolSwitchmustbeOFF.
3) Pull the Spray/BrushTrigger
andpullthemachinebackwards
ataslowsteadypace,about
1footper2seconds.Cleanin
approximately5footstrokes.
Overlapstrokesby2inches,
releasingtheTrigger6inches
before ending each stroke.
KeeptheSuctionNozzlein
firmcontactwiththecarpet.
1) Dirtywaterpassesthroughthe
rightSightTubewhilecleaning.
Whendirtywaterstopspassing
through the Sight Tubewhile
cleaning,themachineisempty.
Emptydirtywaterfromandrinse
Bucket.Refillthemachine.
2) If foam or liquid appears
intheleftSightTube,empty
thedirtywaterfromtheBucket
without refilling themachine.
3) When finished cleaning, empty
andrinseBucket.Usetheclear
DrainTubeatthebackoftheunit
BRUSH
BBRREEAAKER
NO T E: H an d To ol NOT E : R e m o v e
Swi tc h M u st B e deb ri s f r o m
OF F D u ri ng C a rp et bru sh. R e se t
Cl ean in g . Br ea ke r.
Note: Forbestresults,cleanheavily toemptyunusedsolutionfrom TURNOFF ALLSW ITCHES
BEFORE PLUGGIN GIN M ACHINE
SPRAY/Y/
BRUSH
soiledareastwiceatrightangles.
the SolutionTank.
Note:UsetheHandToolfor
cleaning stairs. See Cleaning
Upholsteryfor Hand Tooluse.
SUCTION PULL
TRIGGER
3
P
reparing
Machine
Cleaning
Carpet

CLEANING DIRECTIONS
1) Turnall SwitchesOFF.
2) DisconnectthemachineSolution
Hose.Pulldownonthemiddleofthe
brassCoupler.Thehosewillrelease.
While holding down the Coupler,
insert the Hand Tool Kit Solution
Hose. Release Coupler. Pullon
theSolutionhosetoinsureitis
secured.
3) Disconnectthegreyandblack
VacuumCuffsatthebackofthe
machine. Connect the grey
Hand Tool Kit Cuff to the grey
machine Cuff.
WARNING: Do Not Use ToClean Haitian Cotton!
1)Read7IN1CarpetCaredirections.
See: Test Colorfastness and
Upholstery Cleaning Directions.
Mix7IN1withwaterinBucket
accordingtodirections.
Note: For upholstery
cleaning, mix 1.5
gallonsofcleaner
atatime.
1)Important:PourcontentsofBucket
intomachineSolutionTank.
1) See Preparing Carpet & Upholstery.
2) TurnONtheSuctionandHandToolSwitches.
3) SqueezetheHandToolTriggerasyoupull
uporbackwithoverlappingevenstrokes.
Cleaning Stairs
1. Use the Hand Toolto clean stairs. (See Cleaning Upholstery to hook up hand tool.)
2. Clean the upstairs rooms first, then the stairs.
IMPORTANT: When cleaning the upper stairs, turn machine sideways so wheels are NOT facing forward, toward stairs.
Be careful bringing the machine down wet stairs. Make sure to empty the Bucket and Solution Tank using the Drain Hose.
3. Turn on Suction and Hand Tool Switches.
4. Place Hand Tool Suction Nozzle on carpet and squeeze Trigger while pulling backwards.
Cleaning Machine
1) Wipe hair and debris from the Lid.
2) Drain unused solution from Solution Tank.
3) Dispose of solution and rinse Bucket thoroughly.
4) Clean out the Vac Nozzle with a hanger.
5) Remove fibers and hair from the Brush.
6) Wipe Brush Chamber clean with towel.
7) Wipe off the exterior of the machine with a damp towel.
Spray/Brush
Trigger Switch
Suction Switch
Handle Adjust
Lid
Bucket
Handle
Bucket
Sight
Tubes
Handle
Hoses
Solution
Tank Drain Hose
Suction Nozzle
/ Brush
4
Cleaning
Upholstery

MACHINE OPERATION TROUBLESHOOTING
LOSS OF ELECTRICAL POWER
1) Check if the Switches are in the ONposition.
2) Check to see if Electric Cord is plugged in.
3) Check if the Brush Circuit Breaker has tripped. Clear brush of debris until brush turns freely. Then reset the
breaker.
4) Check circuit breakers or fuse box in yourbuilding.
5) Check if the outlet is wired to a light switch, or try using a different outlet.
6) If Machine keeps blowing breakers or fuses every time you turn it on, have a qualified repair center check the
equipment.
LOSS OF VACUUM / LITTLE OR NO SUCTION
1) Check if hose cuffs on back of the machine are connected. (See illustration on page4.)
2) Be sure the suction switch is on. If you don’t hear any sound from the vacuum, have a qualified repair center check
the equipment.
3) Be sure the lid is firmly seated in the bucket and the bucket handle is snapped inplace.
4) As you make a backwards cleaning stroke, be sure the suction lips are down firmly on thecarpet.
5) Brush off any accumulated lint or debris on the vacuum filter screen located on the bottom of the lid.
6) The vacuum nozzle may be stopped up with lint. Turn the machine OFF. Unplug and empty the machine of liquid.
Tilt the machine back and remove lint with a benthanger.
LACK OF WATER PRESSURE
1) Make sure the cleaning solution was poured from the removable bucket into the solution tank.
2) Make sure to pull the spray/brush trigger switch while carpet cleaning; or the hand tool switch is ON when using the
hand tool.
3) Check to see if the solution hose is connected at the back of themachine.
4) Make sure you are not out of cleaning solution.
NO BRUSH MOVEMENT
1) Pull the spray/brush trigger switch. If there is no movement, release trigger and check to see if the brush spins
freely. Remove any lint and string caught on the brush. Reset the circuit breaker located on the Handle. DO NOT
attempt to reset circuit breaker if it trips a second time. Have a qualified repair center check/repair the equipment.
2) If the motor runs and the brush will not spin (but it can be turned freely by hand), the belt needs to be replaced. See
C-4 repair instructions for furtherdetails.
KENT INVESTMENT CORPORATION LIMITED WARRANTY
Kent Investment Corporation (the "Company") warrants each new machine against defects in material and workmanship under
normal use and service for a period of six months from date of purchase. Our obligation under this warranty is limited to the making
good at our factory or authorized distributor service station any part or parts thereof, except motors and pumps (see exception
below), which within the warranty period are returned to our factory or authorized distributor service station, transportation prepaid,
and which are determined by us to have been defective in workmanship or material. All parts being returned must be accompanied
by date of purchase, name of party purchased from, invoice number and serial number of machine. Purchaser's exclusive remedy
against defects in workmanship or material under this warranty shall be the repair or replacement of the returned part or parts as set
forth above.
EXCEPTION: This warranty does not apply to motors or pumps used on Kent Investment machines. The motors and pumps carry a
warranty of their own and are covered by the manufacturer of said motors andpumps.
This limited warranty does not cover any product or part(s), damage or defects resulting from misuse, neglect, accident, normal
expected wear, improper installation or operation contrary to factory recommendations or unapproved, unauthorized repairs or
alterations. Kent Investment Corporation reserves the right to inspect and make the final decisions on any warranty claims that may
bequestionable.
Purchaser shall have no claim against the company in connection with this warranty, the company's machines, or otherwise, for
consequential or incidental damages, including without limitation damages for loss of use, lost profits, or delayed delivery or
expenses related to the receipt, transportation, or care of a new machine. In no event shall the company's liability with respect to
each machine covered under this warranty exceed the price paid by purchaser for such machine.
This limited warranty is the exclusive warranty of Kent Investment Corporation and is in lieu of any other warranty express or implied,
including, but not limited to, warranties of merchantability and fitness for a particular purpose.
5

RETURNING THE C-4 TO RENTABLE CONDITION AFTER EACHUSE.
1) Examine the power cord, plug and switches for damage or wear. Wipe down power cord. (Note: Damaged or worn
electrical components must be replaced.)
2) Turn on the vacuum motor, let it run to blow out any trapped water. (Note: Unusual motor noise indicates motor
needs replacing.)
3) Pull spray/brush switch to activate pump and brush. Make sure both are working properly. (Note: Pump should not
be run dry more than a few seconds, it becomes loud whendry.)
4) Drain all unused solution from the solution tank by lowering the drainhose.
5) Remove bucket and spray it inside and out with cleaning disinfectant. Let sit.
6) Wipe debris from lid filter screen. (Located on the underside oflid.)
7) Clean solution tank filter bag. Pull the tab at the bottom of the bag to turn it inside-out and wipe away debris.
8) Spray the outside of the machine with cleaning disinfectant. (Note: Do not spray air vents on the back door, control
panel on the handle or any electricalcomponents.)
9) Tilt machine forward. Remove hair and debris from brush. Clean vacuum nozzle with lint hook. Ensure wheels are
clean.
10) Turn the brush by hand to ensure it turns freely. (Note: If brush does not turn freely, remove brush and clean
between brush and bearings. Also inspect bearings.) See Servicing and Rebuilding Brush Assembly.
11) Wipe machine and rinse bucket. (Note: Do not spray the air vents on the back door, control panel on the handle
or any electrical components.)
12) Using shop towels and disinfectant, wipe down the entire machine and hoses.
13) Keep the bucket ventilated between rents by laying the bucket handle underneath the lid to prevent the lid from
closing.
14) Check that all decals, instructions and safety warnings are in place and in good condition.
15) Inspect and clean the hand tool kit. Pull the hand tool trigger to drain the valve and solutionhose.
6 MONTH INSPECTION AND SERVICE
1) Service the brush assembly. See Servicing and Rebuilding Brush Assembly, Page14.
2) Check lid for leaks. See testing Lid (7LIDLM) Page 16.
3) Check coupler (10037) for leaks. Add water to tank. Make sure coupler and brass plug (10038) are connected.
Turn on hand tool switch and inspect connection for leaks. Disconnect coupler and plug. Turn on hand tool switch and
check coupler for leaks. If leaking see Coupler Repair (4059) Page16.
4) Check spray pattern. Add water to tank. Lean machine back and pull the trigger switch. With your hand, check the
spray pattern making sure pattern is uniform. If it is not, the spray jets need to be cleaned.
5) Inspect power cord for cuts, scrapes and exposed wires. Also, check the plug forloose prongs.
6) Inspect drain tube assembly for leaks. Add water to the tank. If leaks are observed see Replacing Drain Tube
(#10159) Page 16.
SERVICE WARNINGS
Warning: Only genuine Kent Investment Corp. electrical replacement parts should be used. Failure to do
so will void the UL and CSA electrical safety compliance and could result in fire, electrical shock, personal
injury or damage to the modelC-4.
Warning: 1. Do not tilt machine all the way back to floor with water in bucket. Water will go through lid,
down to vacuum motor and may damage the vacuum motor.
2. If this happens return unit upright and place towel under exhaust port. Turn on the Suction Switch, run
until no water discharges out of exhaust port, about 2 to 3minutes.
Warning: Pump should not run dry for more than a few seconds. Running the pump dry may cause the
pump to overheat.
6

TROUBLE SHOOTING GUIDE
ELECTRICAL SYSTEM
NOTE: When replacing electric terminals a good crimp is essential. Double check new crimp. It should not have exposed
wires.
SYMPTOM
POSSIBLE CAUSE
SOLUTION
No power to the machine.
1. Building circuit breaker tripped.
1. Unplug any other equipment on the
same circuit. Wait five minutes, reset
circuit. Note: If breaker continues to
trip, try outlets on another circuit. If new
circuit continues to trip, DO NOT use
the unit. All motors and wires must be
examined fordefect.
2. Defective walloutlet.
2. Plug machine into different outlet.
Also: Check if outlet is wired to a light
switch.
3. Defective Plug.
3. Replace Plug (10109).
4. Loose PowerConnection.
4. Check Lever Nuts (10267 / 10277) to
black and white wires.
5. Defective PowerCord.
5. Replace Power Cord(18205).
Power is intermittent to all or some of
the motors.
1. Loose Terminal or LeverNut.
1. Replace loose Terminals or
reconnect Lever Nut.
2. Burned or corroded Terminals.
2. Replace Terminals.
3. Defective Switch.
3. Replace Switch (10308/18032).
4. Defective Wire or PowerCord.
4. Replace Wire or Power Cord(18205).
Electrical short.
1. Damaged or loose wire connection
that touches any metal on the machine.
1. Check for damaged or loose wires
and make sure all ground wires are
properly connected.
2. Defective motor touching improperly
grounded metal on the machine.
2. Replace defective motor and make
sure all ground wires are properly
connected.
3. Wire, Power Cord or Terminal with
worninsulation.
3. Replace Wire, Power Cordor
Terminal.
7