FLOOR SANDER MODEL HTF-2

OWNERS MANUAL & OPERATING INSTRUCTIONS

REF.180 PART # 031390

PRIN

TED

INTH

EU

K

JULY 2003 © Hiretech

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From Serial Number00579 (220/240 Volt) & 00579 (110/120 Volt)

NORTH AMERICAN SAFETY INSTRUCTIONS

USE AND APPLICATION

WARNING: This floor sanding machine must be grounded.

This floor-sanding machine shall be grounded while in use to protect the operator from electricshock. The machine is provided with a three-conductor cord and a moulded three-contactgrounding type attachment plug to fit the proper grounding type receptacle. The Green (orGreen and Yellow) conductor in the cord is the grounding wire. Never connect this wire to otherthan the grounding pin of the attachment plug.

This floor-sanding machine is provided with an attachment plug as shown in sketch A. It isintended for use on a nominal 120 volt circuit. If a properly grounded receptacle as shown insketch A is not available, an adaptor as shown in sketch 'C' should be installed as shown in sketchB if the outlet box that houses the receptacle is grounded. Be sure to fasten the grounding tab witha metal faceplate screw.

Floor sanding can result in an explosive mixture of fine dust and air. Use floor-sanding machineonly in a well-ventilated area free from any flame or match.

Moving Parts - to reduce the risk of injury, unplug the machine before replacing abrasive sheetsor carrying out any form of adjustment or servicing.

WARNING:

WARNING:

Risk of explosion.

Of potential injury.

This machine is intended for commercial use connected with the laying and maintaining of wooden floors anddecks.

These types of surfaces may be found both in commercial and household environments.

ATTACHMENT PLUG SKETCH ‘C’

METALSCREW

COVER OF GROUNDEDOUTLET BOX SKETCH ‘B’

ADAPTER

GROUNDINGMEANSCOVER OF GROUNDED

OUTLET BOX SKETCH ‘A’

GROUNDING PIN

CONTENTS

WARNING

MAINS CABLE WIRING - PLUG

SPARE PARTS

SPECIFICATION

SAFETY

ASSEMBLY & TRASNPORT

INSTALLING ABRASIVE

PREPARATION

OPERATION

FLOOR SANDING TECHNIQUE

FLOOR TYPES

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1

1

2

2

2,3

3

Drum Floor Sander 4Disc Floor Sander 4Orbital Floor Sander 4Hand Sanding 4

Sanding Plank & Strip Floors 4Veneered, Laminated & Thinner Floors 4Parquet & Block Floors 5Sanding Between Coats of Finish 5

ABRASIVE PAPER GUIDEHiretechHiretech

FLOOR SANDING TECHNIQUE

SERVICE AND ROUTINE MAINTENANCE

FAULT FINDING

HTF-2 PARTS DRAWING

HTF-2 PARTS LIST

FLOOR SANDER ABRASIVES

HTF-2 CIRCUIT DIAGRAM

DECLARATION OF CONFORMITY

Abrasive Pad & Strips 6Coated Abrasives 6

5

General 7Visual Inspection 7Dust Control 7Lubrication 7Care of Motor 7,8Setting the Wheels 8Electrical Testing 8,9

9

10,11

12,13

13

14

15

SERVICE & REPAIR 16

WARNING

MAINS CABLE WIRING - PLUG

For safe operation of this machine, read and understand all instructions. Look for the ‘warning/caution’ symbol.

This symbol means that if you do not follow the instructions injury can occur to the operator anddamage to the machine and floor may result.

Hiretech reserves the right to make changes or improvements to it's products without prior notice.®

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NORTH AMERICA

BLACK

WHITE

GREEN

BRASSTERMINAL

SILVERTERMINAL

EU

BLUE BROWN

GREEN/YELLOW

UNITED KINGDOM

BLUE(N - NEUTRAL)

BROWN(L - LINE)

GREEN/YELLOW(E - EARTH)

SPARE PARTS

Use Hiretech genuine spare parts only for service and repair. Use of non-approved parts will void the productwarranty. See the back cover of this manual for the terms and conditions of the Hiretech Limited Warranty.

SPECIFICATION

The HTF-2 Floor Sander will sand wood floors,including fine parquet, pre-finished and laminatewood flooring systems, cork and composition floorsto a fine finish. Ideal for sanding between coats offloor varnish and lacquers were a very high quality,score free finish is required. The finally balancedorbital action will not leave swirl marks in the floorsurface which may be highlighted when varnished.Designed for sanding floors that are level and ingenerally good condition were the existing varnishhas worn and requires re-finishing. Completely selfcontained with a powerful dust pickup the HTF-2 is ahigh performance floor sander suitable forprofessional and home owner use.

SAFETY

1. For safety it is recommended that a residualcurrent circuit breaker (ground fault interrupter)is used with this machine.

2. Check the operating voltage is correct and thatthe machine is switched OFF (O) beforeconnecting to the power supply.

3. Never attempt to lock the switch in the ON (I)position with tape or by any other means.

4. Always disconnect from the power supply whenchanging the abrasive, servicing the floorsander, replacing the dust bag or leaving themachine unattended.

5. Always replace the dust bag when the dust in thebag reaches the ‘MAX’ line or when the machineis left unattended.

6. Never dispose of or empty the contents of thedust bag into a fire or incinerator.

7. Never reuse the paper dust bag or use a nonstandard bag.

8. Always wear a dust mask when using the floorsander, handling the dust bag or cleaning themachine after use.

9. Wear ear protection when using the floor sander.

10. Ensure adequate ventilation of the work area toavoid the formation of a combustible mixture offlying dust and air.

11. Never smoke when using or servicing the floorsander or when handling the dust bag. Makesure thast all possible sources of ignition areremoved from the work area.

12. Never expose the machine to rain or damp.Always store in a dry place.

13. Stop the floor sander immediately if damage tothe machine or abrasive is suspected.

14. Never allow the power cable to come into contactwith the sanding pad when the floor sander is inoperation. If the power cable becomes damagedand the inner conductors are exposed switch thepower OFF (O) and remove the plug beforeattempting to move the machine. The cable mustbe replaced by an authorized agent or qualifiedelectrician using genuine spare parts only.

15. Keep hands, feet and loose clothing away fromall moving parts of the machine.

16. Punch down or remove all nails, screws, tacksand other fixings from the floor before sanding toprevent contact with the sanding pad.

17. Keep children and pets clear at all times.

18. If the machine should fail to operate refer to thefault finding guide on page 9.

Hiretech®

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Read the following Safety andOperational notes before using yourHTF-2 Floor Sander.

Noise: 95 dBa at 1metre (3’ 3")

Switch: Bias Off, double pole.

Motor RPM: 10,000

Sanding Pad

RPM:

3,000

Moving Parts: Sealed for life ball bearings.

Weight: 43kg (94.8lbs)

0.09 M² H Aeq8

(8 Hr. RMS )

400mm (15¾") x 115mm

(4½") random fibre abrasive

pad 280 grit and backing pad.

400mm (15¾") x 115mm

(4½") anti-clog adhesive

backed sheet 40 to 180 grit.

Abrasive:

Continuous heavy duty AC/DC

self cooling 4 brush.

400mm (15¾") x 115mm 4½"

MDF back with 4½" MDF

back with

Non-slip toothed timing belt

and toughened steel pinion

and drive gear.

Seated oversize vacuum fan,

disposable paper dust or cloth

bag.

Drive:

Dust Pickup:

Vibration:

Motor:

Sanding Pad:

110/120 V 50/60 Hz

220/240 V 50/60 Hz

110/120 V 8A

220/250 V 5A

Average

Load Current:

110/120 V 15A

220/250 V 8A

Power Supply:

Off Load

Current:

ASSEMBLY & TRANSPORT

1. The HTF-2 breaks down into two componentparts, the main body and handle assembly foreasy handling and transport. To assemble loosenthe Handle Clamp Handle and fit the handleassembly to the Handle Yoke which should belocked in the upright position. Tighten theHandle firmly.

2. Pull the Dust Bag Frame down to its operatingposition. Connect the Handle Cable to the BodyTwist Lock at the rear left hand side of the floorsander body. Align the plug with the pins, pushin and twist clockwise to lock.

3. Fit a Hiretech disposable paper dust bagfollowing the instructions printed on the bag.

4. Tip the floor sander back so that it rests on theDust Bag Frame to fit the selected abrasive.Remove the power cable from the handleassembly. Check that the cable is in goodcondition and the strain relief and plug aresecure. The floor sander is now ready to connectto the power supply and start sanding.

5. To dismantle the floor sander reverse theprocedure 1 to 4 above.

6. Always carry the floor sander by the front handgrip and the handle yoke which must be lockedin the upright position with the handle detached.The dust bag frame should be stowed in the upposition.

Clamp

WARNING - Never carry the floor sanderby the handle assembly and body or withthe handle assembly attached. Failure toobserve this rule may result in personalinjury and/or damage to the floor sander.

CAUTION - Do not use any other type ofabrasive pad or backing material as thismay damage the floor and/or floorsander.

7. Transport the sander with the sanding block andabrasive pad in place this will help maintain thedust brushes in good condition. Always ensurethat the floor sander is secure and cannot movewhen being transported in a vehicle. The floorsander is heavy. Take care when lifting andcarrying the machine.

1. Ensure the power cable is disconnected from thepower supply.

2. Lock the handle in the upright position and tip thefloor sander backwards so that it rests on the dustbag frame.

To remove the sanding block take hold of eachend of the block and pull it off its mounting posts.Take care to pull the block off evenly and avoidtrapping your fingers between the block and thebody of the floor sander.

3. Refer to the Abrasive Guide on page 6 for thecorrect abrasive to use.

4. - fit an abrasive pad to thesanding block. Carefully line the pad up with theface of the sanding block and push down. Thepad is both a fine abrasive and a backing pad forthe coated abrasive sheets. It is important thatthe pad is maintained in good condition and notused beyond its useful working life.

5. - peel off the backing toexposure the adhesive back and carefully fix theabrasive to the face of the abrasive pad makingsure it is in line. When changing abrasive sheetspeel off carefully so as not to destroy the face ofthe abrasive pad.

6. With the abrasive fixed to the sanding block re-fit the block (if removed) to the floor sander.

7. Stand the floor sander up, it is now ready to use.

8. Periodically check that the abrasive pad is still inline with the sanding block. If the machine istipped back when in operation the abrasive padmay become misaligned.

If a sanding block is already fittedthe abrasive may be fitted with the sanding blockleft in place or it may be removed if required.

Abrasive Pad

Abrasive Sheets

INSTALLING ABRASIVE

2

DUST BAG FRAME

DUST BAG

FOOT PEDAL

HANDLE

LIGHT

DUST BRUSHSANDING BLOCK

BUMPER

HANDLE YOKE

MOTOR COVER

HANDLE CLAMP

CABLE HOOK

POWER ON NEONSWITCH HOUSING

ON/OFF SWITCH

Main Components

PREPARATION

OPERATION

1. Where possible remove all furniture from theroom. The HTF-2 Floor Sander features anefficient dust pick-up, however, some dust willescape. Protect all vulnerable furnishings withdust sheets, masking films and tape.

2. Remove all tacks, staples and other unwantedfixings from the floor. Failure to do so will resultin damage to the sanding pad and abrasivesheet or pad.

3. Punch all nails below the surface of the floorusing a suitable nail punch and hammer. Anyscrews used to fix boards should be counter sunkbelow the surface. During sanding, any nails orscrews that become exposed must be punched orcounter sunk further.

4. Firmly fix all loose boards or blocks.

5. Remove heavy wax, grease and dirt deposits byhand.

6. Sweep and vacuum the floor thoroughly toremove dirt and discarded fixings.

7. Ensure good ventilation by opening windows.

1. Move the floor sander to the location of yourwork.

2. Make sure the switch is in the OFF (O) positionthen connect the main cable to a suitable powersupply ideally located behind or to one side ofthe machine and work area.

3. Wear a dust mask and ear defenders.

4. Hold the handle with both hands and depressfoot pedal with your right foot. This will releasethe handle.

5. Switch ON by pushing the ON/OFF switch downusing the thumbs of one hand to ON (I) positionand hold in place. Start moving immediately. Toswitch OFF (O), release the pressure on theswitch and it will automatically return to the OFFposition.

CAUTION - the HTF-2 Floor Sander is apowerful machine always ensure youhave a firm grip before switching on.

6. Follow the instructions carefully for sanding andre-finishing a floor (see page 4 & 5). Walk slowlyforward and back, working progressively acrossthe floor. Do not dwell in one place. The floorsander will glide easily across the surface of thefloor.

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7. When the dust in the dust bag reaches the ‘MAX’line stop sanding. Switch OFF, disconnect thepower cable from the power supply and removethe paper dust bag. Turn the top of the paperdust bag over to stop the escape of dust anddispose of into a suitable container. Fit a newpaper dust bag. Reconnect to the power supplyand continue sanding. Never reuse the paperdust bag or attempt to empty it.

6. Change the abrasive when the quality of thesanding is reduced or the abrasive becomesclogged.

(a) Always ensure that the floor sander ismoving when in operation and thesanding pad is in contact with the floor.

(b) Never lift the back or front of the machinewhen sanding.

(c) Never apply pressure to try and increasethe rate of sanding. Damage to the floorwill occur.

(d) Never bounce or drop the floor sander onto the floor, always lower the machinegently.

(e) Never dwell in one place, move steadily atall times.

(f) Never allow the power cable to come intocontact with the sanding pad.

7.. When taking a break from work switch OFF (O)and disconnect the power cable from the powersupply, remove and dispose of the paper dustbag.

9. On completion disconnect the power cable fromthe power supply. Remove and dispose of thepaper dust bag. Lock the handle in the uprightposition and stow the power cable. Lock the dustbag frame in its up position. Leave the oldabrasive pad in-place to protect the dustbrushes. Carry out maintenance asrecommended in Maintenance and Servicing.

DANGER - never leave the floor sanderunattended with dust in the dust bag.Always remove the dust bag and disposeof into a suitable container.

CAUTION - to prevent damage to thefloor surface, work piece or machinefollow these rules.

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FLOOR SANDING TECHNIQUE

HT8-1.2 Floor Sander (Drum)

HT7-2 Disc Floor Sander (Edger)

HTF-2 Floor Sander (

Hand Sanding

- a powerful floorsander designed for the rapid leveling and sanding ofall types of wood flooring excluding thin laminated orveneered floors. Load the sander with abrasivemaking sure that it is skin tight around the drum.Loose sheets will tear. Place the sander on the righthand wall (unless you are making an angled cut onuneven floors) with about two thirds of the floor infront of you. Start the sander with the drum off thefloor then walk forward at an even pace and ease thedrum on to the floor. As you near the end of the pass,gradually raise the drum off the floor. Practice thistechnique before turning on the sander.

Cover the same path you made on the forward cut bypulling the machine backwards and easing the drumto the floor as you begin the backward pass until youreach the original starting point, then ease the drumoff the floor.

When two thirds of the floor is sanded, turn the floorsander around and sand the remaining third in thesame way. Overlap the one third area by

( ) with the two thirds area to blendthe two areas together.

- a powerful discfloor sander designed for sanding along the edges ofa floor without damaging the baseboards ormoldings. Also suitable for smaller areas where theHT8-1.2 Floor Sander will not reach like stair treadsand closets. Load the abrasive disc making sure theretaining bolt is tight. Start the edger with the disc offthe floor then lower the disc to the floor as you movethe sander.

- an orbital actionfloor sander designed for re-finishing, sandingbetween coats of varnish and re-surfacing floors ingood condition. Load the abrasive sheet, pad or strip.Start the sander, move immediately and sand in thedirection of the grain using the same technique as thedrum floor sander. For difficult to reach areas use aheavy duty hand held orbital sander or sand by hand.

- to sand difficult to reach areasscrape and sand the floor by hand. Use a scraper toremove old finishes, always scraping in the directionof the grain, and then sand by hand using the samegrit abrasive as you finished with when machinesanding. See Floor Sanding Technique diagrams onpage 5.

0.6 to 0.9meters 2 to 3 feet

Work progressively moving the sander ina sweeping motion from side to side.

WARNING - never bounce the sandingdrum or dwell in one place as this willsand dips and hollows in the floor.

Orbital)

FLOOR TYPES

SOLID WOOD PLANK & STRIP FLOORS

VENEERED, LAMINATED & THINNER FLOORS

Old floors in good condition

Uneven floors

Floors with an existing finish

Hiretech

- when the floor is ingood condition - no uneven edges, cupping orcrowning of planks and strips - and you want to re-surface the floor, sanding back to new wood, startsanding in the direction of the planks or strips - withthe wood grain. Start with a medium grit abrasive.Complete the first cut with the HT8-1.2 Floor Sanderthen sand up to the baseboards and door thresholdswith the HT7-2 Disc Floor Sander, using a mediumgrit abrasive, blending the edges in with the mainfloor area. Sweep the floor. Using a medium/fine gritabrasive, sand the main floor area with the drumsander and then complete the floor with the edgerusing a fine grit abrasive. Sweep the floor. Finishsanding the main floor area with the drum floorsander using a fine grit abrasive. If the floor is inparticularly good condition (level with no deepscratches or blemishes) you may re-surface the floorusing the HTF-2 Floor Sander, however, as thesanding action of this machine is less aggressive thanthe HT81.2 Floor Sander the job will take more time.

- when the floor is uneven sand

diagonally at 45 across the room in both directionsusing the HT8-1.2 Floor Sander with a coarse gritabrasive. Only make one cut on both diagonals, thiswill achieve a basic level. Now complete the floor asfor a level strip or plank floor. Use the same gritabrasive as was used on the 45 cut for the first cutparallel to the planks or strips.

- when re-finishing afloor remove as little of the existing surface aspossible. If the old finish is worn and the floor isgenerally in good condition use the HTF-2 FloorSander with abrasive pads and sheetswhich have been especially designed for re-finishingfloors. These will maintain the integrity of any stainused to colour the wood and prepare the surface for anew coat of finish. If the floor is badly marked andscratched and has to be sanded back to new wooduse the HT8-1.2 Floor Sander and HT7-2 Disc FloorSander. Always try a medium grade paper first,particularly on a diagonal cut. If 90% of the old finishis removed and the floor is generally leveled, you donot need to use a coarse grit abrasive.

Use the HTF-2 Floor Sander for veneered andlaminated floors or thinner floors that may have beensubjected to repeated sanding. The HTF-2 willremove old surface finishes and prepare the floor forre-finishing. Sand the floor using the same methodas a strip, plank, or parquet floor. If the floor hasdeeper scratches or marks these should be sanded

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out by hand and blended in with the main floor. Tocheck the wood depth in the floor remove abaseboard or molding from around the edge of thefloor. This should provide access to the edge of thefloor for inspection.

The grain of the wood will run in a number ofdirections so sand the floor in the direction of themain source of natural light in the room. If there is nosource of natural light sand in the direction of thelongest side of the room or, if the room is square, inthe direction the furniture is laid out and how peoplenormally use and view the room.

This technique will help mask any imperfections in the

PARQUET & BLOCK FLOORS

floor. Complete the sanding operation as detailedfor plank or strip floors.

Use the HTF-2 Floor Sander to sand between coats offloor finish, particularly when using water basedvarnishes. These types of finishes tend to raise thewood grain when first applied to raw wood. Alloweach coat of varnish to dry completely following themanufactures directions. Use Hiretech abrasive padsto sand between each coat of varnish. The fineabrasive pads will remove light brush/applicatormarks and raised grain while maintaining theintegrity of the coat of varnish applied.

BETWEEN COATS OF FINISH (VARNISH)

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unsanded boardssanded boards

level very unevenfloors by sandingdiagonally in both

directions

unsanded boards

unsanded boards

Level uneven floors.

Sand main floor area.

Sand and blend edges in with main floor area.

FLOOR SANDING TECHNIQUE

Plank and Strip Floors

Parquet and Wood Block Floor

- sand in thedirection the boards are laid, with thewood grain.

-sand in the direction of the mainsource of natural light. If there is nonatural source of light, sand in thedirection of the longest side of theroom. If the room is square, sand inthe direction the furniture is laid outand how people normally use theroom.

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HTF-2 FLOOR SANDER ABRASIVE GUIDE

DO NOT OVER-SAND USE ONLY AS HEAVY GRADE ABRASIVE AS IT TAKES TO DO THEJOB. PROGRESS FROM FIRST GRADE USED THROUGH FOLLOWING GRADES TO

REMOVE ALL VISIBLE SANDING MARKS. DO NOT MISS A GRADE.

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ABRASIVE GRADE APPLICATION FLOOR TYPE

Abrasive Sheet 40G(Coarse)

Abrasive Sheet 60G(Medium)

Abrasive Sheet 80G(Medium)

Abrasive Sheet 120G(Fine)

Abrasive Sheet 180G(Extra Fine)

Abrasive Pad 280G(Finishing)

For the rapid removal of stock and Use on solid raw woodwhere a deep cut is required. floors.

Not recommended for use onfactory finished or laminateflooring systems.

In progression from 40 grade to first Solid raw wood floors, andsanding on floors where an existing stainless stock removal. or finish is to be completely

removed from the wood priorto new finish being applied.

Removal of stains and old finish fromthe sub surface of the floor afterstripping of surface coatings with 80grade (medium) abrasive.

Medium stock removal. Suitable for all floor types,however, care should be

Rapid removal of surface coatings and taken on factory pre-finishedfinishes. floors where the integrity of

seals and stains should bemaintained.

Light stock removal and where only a First sanding of floors thatminor dimensional change is required require re-finishing withoutin the floor surface. the removal of old surface

coatings and where theintegrity of seals and stainsmust be maintained.

Negligible stock removal prior to Suitable for all floor types.application of finish.

Preparation for high quality finished Suitable for all floor types.Surface.

Use to sand between coatsFlexible backing pad for abrasive of finish especially watersheets. based stains and varnishes.

smooth surfaces requiring

Backing Pad

SERVICE & ROUTINE MAINTENANCE

CAUTION - maintenance and repairsmust be carried out by authorizedpersonnel only. To prevent injury, alwaysremove the power cable from the powersupply before undertaking any work onthe machine. Do not operate thismachine unless it is fully assembled andall guards are in place. Use Hiretechgenuine spare parts only.

General

Visual Inspection

1. Always make a list when first examining themachine, to remind you of parts or actionneeded on completion of routine maintenance.

2. The HTF-2 Floor Sander is subject to high speedsand vibration, all screws should be fitted using asuitable thread lock compound.

3. The HTF-2 Floor Sander needs no lubricationduring routine servicing.

4. Always ensure that the electrical supply isdisconnected before starting any routineservicing or repair.

5. Follow a regular schedule of routinemaintenance to keep your HTF-2 Floor Sanderin good working.

1. To clean the machine and remove dust, use avacuum cleaner to avoid damage and preventinhalation of dust.

2. Examine all external parts of the floor sandermaking sure there is no damage. Check thecondition of the Dust Brush and Bumper aroundthe base of the floor sander, both of which shouldbe undamaged and in good condition. Checkthat the Handle Yoke unlocks and moves freely inits operating position.

3. Examine the sanding pads. These should beundamaged and in good condition. Theyshould fit firmly to the fixing posts and pivotslightly forward and back.

4. Examine the power cable for damage. If theouter insulation shows the slightest of abrasionsor the inner conductors are exposed then thecable must be replaced. The cable must not berepaired with tape or insulation sleeve.

5. Ensure all labels are sound, readable andsecure.

6. Check that the rear wheels are sound andmoving freely. If a wheel is found to be loose ordamaged then the floor sander will not sand orhandle properly. Check and reset the wheels (see

Setting the Wheels on page 8). Replacedamaged wheels.

7. Check the condition of the Dust Bag Framemaking sure that it hinges down in to itsoperating position and locks securely whenstowed.

1. Remove the handle and lay the floor sander onits face. Remove the sanding pad if fitted andinspect the underside for the build up of dust orpieces of abrasive. Clean as required.

2. Inspect the condition of the Dust Brush. Thebrush should be replaced if damaged or badlyworn.

1. The dive gears and drive belt do not requiremaintenance under normal operatingconditions.

1. The HTF-2 Floor Sander features sealed for lifebearings which do not require any lubrication.In the unlikely event that a bearing has to bereplaced use a Hiretech genuine spare part onlyas the grease contained in the bearings isspecial. A standard bearing is not suitable andmay result in further damage.

1. The motor must be kept clean and free fromgrease and dust.

2. The motor brushes must be checked regularly.Replace ALL FOUR motor brushes when any onebrush has worn to 12mm ( / ”) or less in length.

Brushes MUST slide freely in the brush holders.

There is no need to remove or disconnect anyinternal leads when changing the brushes, onlythe small braided shunt (pigtail) connected to themotor brush is disconnected to release the brush.

3. To replace the motor Brushes ;

(1) Remove the four screws from the MotorCover and lift the cover off.

(2) Remove the four Spring Brushes and set toone side. The springs are removed bypushing the spring tag in towards thebrush and lifting out.

(3) Using a cross recess screwdriver removethe four brush shunt (pigtail) retainingscrews and lock washers.

(4) Remove the four brushes.

Dust Control

Drive

Lubrication

Care of Motor

15

32

7

(5) Thoroughly clean the brush assembly andhousing using a soft brush and a suitablevacuum cleaner.

(6) Inspect the four brushes for damage orwear and if any one brush is found to bedamaged or worn to a l e n g t h o f12mm ( / ”) or less in length then replace

all four brushes. Always replace all fourbrushes together.

(7) When replacing brushes ensure that eachbrush moves freely in each brush holderand fit the brush with the shunt (pigtail) insuch a position as to allow free movementthroughout the brushes life. Ensure thateach brush shunt is connected securelywith the screw and lock washer (two sparescrews and washers are provided witheach pack of brushes). The brush shouldbe fitted so that the brush shunt (pigtail) isat the bottom of the brush.

(8) Refit the brush springs by inserting into theholder with the coil spring over the brushthen push in until the tag comes intocontact with the holder, slide the tag awayfrom the brush and release. The brushspring will clip into position. Check thesprings and brushes for correct alignmentand free movement.

(9) Finally check that all leads and cables areclear of moving parts and will not betrapped when refitting the cover motor.

(10) Refit the cover motor and secure with thefour screws.

1. Remove the handle and turn the floor sanderupside down so that it rests on the motor cover.Take care, the floor sander is heavy and caneasily over balance. Make sure that it is wellsupported.

2. Fit the sanding block to the floor sander, makingsure that it is firmly seated.

3. Place a block of wood or other solid material on

the face of the sanding block 16mm ( / “) high

by 114mm (4½”) wide across the full width of thesanding block.

15

32

Setting the Wheels

CAUTION - under normal operatingconditions the wheels should not have tobe adjusted. However, should yoususpect the wheels have gone out ofadjustment follow the procedure belowto check and reset the wheels.

58

4. Place a straight edge, a steel rule is best, acrossthe center of one wheel and the block of wood. Ifthe wheels are adjusted correctly there will be nogap across the whole width of the block. If yousee a gap the wheels need adjustment.

If the gap is at the rear of the block toward theback of the floor sander, the wheels are too low.If the gap is at the front of the block, toward thefront of the floor sander the wheels are too high.

5. If the wheels need adjustment. Loosen the AxleClamp screws located under the axle which willbe facing you when the floor sander is upsidedown resting on the motor cover.

6. Rotate the axle via the socket head screw locatedin the center of the wheels. As you rotate the axlevia the socket head screw the wheels will rise orfall . Adjust the wheels so that the straight edgerests on the center of the wheels and the woodblock so that there is no gap across the wholewidth of the block.

7. When the wheels are correctly adjusted tightenthe axle clamp screws. Check the socket headscrews in the center of the wheels are tight.

1. Examine the power cable for damage. If theouter insulation shows the slightest of abrasionsor the inner conductors are exposed then thecable must be replaced. The cable must not berepaired with tape or insulation sleeve.

2. Open and check the mains plug for condition,loose connections, damaged wires etc. Ensurethat the strain relief of the plug is correctlysecured to the outer cable insulation. This doesnot apply if the plug is molded on to the powercable.

3. Remove the question switch housing screws andlift separate the switch housing. Check theswitch, connections, leads etc. Pay specialattention to any gaskets, ‘O’ rings and sealsintended to exclude dust from the switch andswitch housing area. These must be maintainedin good condition.

Carefully brush and vacuum clean the switchhousing.

4. Refit the switch housing taking care not to trapany leads.

CAUTION - testing for electrical safetyshould only be undertaken by acompetent person and all resultsrecorded. Do not exceed 1250 voltinsulation test duration of 3 seconds

ELECTRICAL TESTING

8

5. Using a piece of insulation tape or a small softwedge lock the bias off switch in the ‘ON’position.

6. Use the standard procedure test for electricalsafety. Do not exceed 1250 volt insulation testduration of 3 seconds.

5. Record the test results.

6. Complete a functional (run) test and recordresults.

FAULT FINDING

FAULT CAUSE ACTION

The machine does not run. The power cable is not Connect the power cable to theconnected to the power supply. power supply.

The motor brushes are worn. Replace the motor brushes.

The voltage is too low. Check the main powercomplies with the machine'sserial plate data.

The machine will not pickup The dust bag is full. Replace the paper dust bag ordust. empty the cloth dust bag.

There is an obstruction in the Disconnect the machine fromdust pick-up. the power supply, tip the

machine back and remove thesanding pad, check forobstruction.

The dust brush is worn. Replace the dust brush.

The machine does not sand The sanding pad is damaged. Check and replace the sandingevenly. pad.

The wheels are out of Check and adjust the wheels.adjustment.

The sander does not glide easily The machine is not being Read the instructions, do notin a straight line. operated properly. apply pressure when sanding.

The wheels are out of Check and adjust the wheels.adjustment.

The Abrasive Pad Replace the Abrasive Pad

The machine runs slow. The voltage is low. Check the supply voltage.

If an extension lead is beingused, is it undersize and/oris it coiled.

A motor brush is not making Check and refit or replacecontact. the motor brushes.

is worn.

CAUTION - when undertaking afunctional (run) test make sure themachine is secure. Remember thesanding pad will rotate.

9

10

HTF-2 PARTS DIAGRAM

From Serial Number00579 - 110/120 Volt00579 - 220/240 Volt

FLOOR SANDER

MODEL HTF-2

OWNERS MANUAL & OPERATING INSTRUCTIONS

DECEMBER 2000 REF.180 PART # 031390

PRIN

TED

INTH

EU

K

4

32 1

4

6

13

46

7

8

511

180

9

10

12

15

18

37

170

85

46

27

26

39

29

49

50

47

16

25

17

24

27

26

35

37

36156

1923

55

30

39

29

22

21

20

67

68

64

65

123

28

15134

31

3233

12762

63

53 61

157

60

54

4851

59

52

56

58

57

250

HIR

ETEC

H

SERV

ICE

TO

OL

HTF-2 PARTS DIAGRAM

11

83

89

8281

84

21

86

81

80

88

93

94

6

91

92

95

96

90

97

99

100

101

102

98

103

104

105

106

96

107

108

22

110

111

112

113

128

129

130

131

132

133

6119

118

22

110

111

113

128

129

130

138

132

133

6 118

114

85

46

6

47

126

48

155

124

140

116

122

115

120

121

135

136

137

131

139

117

134

127

141

147

148147

150

151149

123 146

152

154

153

143

130

144

145

129

138

142

92

125

12

PARTS LIST HTF-2

1 011600 1 Switch 220/240 Volt (Bias Off)1 011610 1 Switch 110/120 Volt (Bias Off)2 030425 1 Housing Switch Assembly3 030630 1 Stop Rubber4 030920 7 Screw5 031870 2 Grip Hand6 010270 5 Washer Lock7 030640 1 Lamp Neon 110/120 Volt7 030650 1 Lamp Neon 220/240V8 030950 2 Lead Neon9 101206 1 Nut Lock10 101205 1 Strain Relief11 030660 1 Cable Main Assembly 110 Volt (NA)11 030670 1 Cable Main Assembly 220/240 Volt (UK)11 030680 1 Cable Main Assembly 110 Volt (UK)11 030690 1 Cable Main Assembly 220 Volt (EEC)11 030700 1 Cable Main Assembly 220/240V (AUS)12 030910 1 Tube Handle Assembly13 962345 10 Screw15 164508 1 Hook Cable16 980197 1 Washer17 920148 1 Nut18 030930 1 Handle Cable (NA)18 030940 1 Handle Cable18 031000 1 Handle Cable 110 Volt (UK)19 101220 1 Strain Relief Handle Cable19 163804 1 Strain Relief Handle Cable (NA)20 911046 1 Body Twist Lock21 010210 4 Screw22 031400 1 Base Twist Lock23 031910 1 Nut24 030450 1 Clamp Handle25 030042 1 Handle Frame26 031790 2 Pin Pivot27 031160 2 Screw28 031900 1 Bolt29 031800 2 Bush Bearing30 030222 1 Latch31 031810 1 Screw32 031890 1 Washer33 031880 1 Spacer Latch Pivot34 031820 1 Screw35 031840 1 Spring Latch Return36 031830 1 Cover Screw37 031850 2 Screw39 030550 2 Washer46 030030 1 Housing Motor47 030022 1 Housing Gear48 030010 1 Housing Lower49 031090 6 Screw50 030270 1 Window Lamp51 031130 16 Nut52 031120 16 Screw

53 030360 1 Brush Set54 030350 1 Bumper55 030300 1 Support Bag (check Serial No.)56 031010 4 Bolt57 031020 4 Wing Nut58 030390 2 Clamp Abrasive59 030400 2 Bush60 030370 1 Sanding Block61 030380 1 Sanding Block Abrasive Pad62 030790 4 Screw63 030060 1 Retainer Wheel64 030320 1 Housing Eccentric65 030070 2 Wheel67 031420 1 Exhaust Guard68 031430 1 Ring Retainer80 030990 1 Lead Motor81 010750 2 Brush Shunt82 010170 1 Brush Block Assembly83 010190 4 Screw Pack of 484 010200 4 Washer86 010220 4 Screw and Washer Set88 010180 4 Brush Motor89 010230 4 Brush Spring90 032000 1 Field 110/120 Volt HTF90 032010 1 Field 220/240 Volt HTF91 010290 1 Baffle92 010300 3 Screw93 010260 2 Washer Clamp94 010280 2 Screw95 010600 1 Spring Load96 010320 2 Bearing97 010330 1 Armature 110/120 Volt97 010340 1 Armature 220/240 Volt98 010350 3 Key99 010360 1 Fan Motor100 010370 1 Gasket101 010380 1 Plate Exhaust102 010390 1 Fan Intake103 010400 1 Ring Retainer104 010410 1 Spacer Bearing105 010420 1 Seal106 010430 1 Ring Retainer107 031520 1 Spacer Pulley108 030180 1 Pulley Drive110 010010 4 Screw111 030090 1 Cover Motor112 011840 1 Insert Bearing113 031280 1 Bush Insulator114 031070 1 Lead Ground (Earth)115 031040 1 Lead Lamp/Ballast116 031050 1 Lead Lamp/Twistlock117 031060 1 Lead Ballast/Twistlock118 030710 1 Ballast Start 220/240 Volt

Ref. PSTK Pack DescriptionQty.

Ref. PSTK Pack DescriptionQty.

118 030720 1 Ballast Start 110/120 Volt119 163838 2 Screw120 163808 1 Grommet121 030280 1 Plate Lamp122 030730 1 Holder Lamp123 030760 3 Screw124 030750 1 Lamp125 030740 2 Screw126 031450 4 Screw127 030820 7 Screw128 031300 1 Plug Bearing129 030480 2 Clip130 030490 2 Clip131 030470 1 Bearing132 030130 1 Shaft Drive133 030510 1 Key134 030150 1 Belt Drive135 030170 1 Bush Pulley136 030190 1 Pulley Driven137 031170 2 Screw138 030460 3 Bearing139 030500 1 Clip140 030120 1 Balance Weight141 030080 1 Holder Sanding Pad142 030410 1 Plate Cover143 030110 1 Bush Eccentric144 030440 1 Cap Retaining

PARTS LIST HTF-2

145 030780 1 Screw146 030520 2 Spring Sanding Pad147 980629 1 Washer148 030830 2 Screw149 010680 1 Pin Cotter150 030850 2 Nut151 030860 3 Washer152 030100 2 Pin153 030600 2 Spring Plunger154 030840 2 Screw155 030770 2 Screw156 031650 1 Knob Assembly157 031370 1 Hook and Loop Pad170 07038 25 Disposable Paper Dust Bag HT7/HTF

Pack 2 (box 25)170 07040 50 Disposable Paper Dust Bag HT7/HTF

(box 50)180 031390 1 Owners Manual & Operating Instructions

250 011740 1 Service Tool - Pinion & PulleyFitting/Removal250 031490 1 Service Tool - Lever Block Holder HTF250 031610 1 Service Tool - Jacking Bolts HTF

Special Tools (not illustrated)

13

Ref. PSTK Pack DescriptionQty.

Ref. PSTK Pack DescriptionQty.

FLOOR SANDER ABRASIVES

24 Grit Open Coat 01001 - - - -

24 Grit 01002 01026 01044 - -

40 Grit Open Coat - - - - -

40 Grit 01003 01027 01045 01750 -

60 Grit - - - 01751 -

80 Grit 01004 01028 01046 01752 -

100 Grit - - - - -

120 Grit 01005 01030 01048 01754 -

180 Grit - - - - 01756 -

Abrasive Pad 280G/Backing Pad - - - - 01769

HT8/DU8FLOOR SANDER

SHEET50/CASE

HT7/SUPER 7EDGER DISC

FIBRE BACKED25/CASE

HT7/SUPER 7EDGER DISC

PAPER BACKED25/CASE

HTFFLOOR SANDER

SHEETADHESIVE BACKED

50/CASE

HTFABRASIVE PAD

20/CASE

Hiretech Abrasive Product Range

Hiretech recommend the followingabrasive range which are suitablefor all floor types and applications.

14

HTF-2 CIRCUIT DIAGRAM

GREEN/YELLOW (GREEN - N.AMERICA)

BLUE (WHITE - N.AMERICA)

BROWN (BLACK - N.AMERICA)

ARMATURE(ROTOR)

FIELD(STATOR)

HANDLE CABLE

SWITCH

MAIN CABLE

LAMP TUBE

BALLAST UNIT

6

3

7

8

DECLARATION OF CONFORMITY

This declaration identifies the product, manufacturer's name and address, and applicable specificationsrecognised in the European community.

15

DECLARATION OF CONFORMITY

Manufacturer's Name:

Manufacturer's Address:

declares that the product:

Product Name:

Model Name: HTF-2HTF-2

conforms to the following:

following the provisions of the directives:

electrical safety test procedures comply with:

Hire Technicians Group Ltd.

Chalk Hill House8 Chalk HillWatfordHerts WD1 4BH

Hiretech Floor Sander

230 Volt 50Hz Insulation Class 1110 Volt 50Hz Insulation Class 1

Machinery Directive (Harmonised) 89/392-EU as amendedLow Voltage Directive (Harmonised) 73/23/EU as amendedElectromagnetic Compatibility Directive 89/336/EU as amended

89/392/EU, 93/44EU, 73/23/EU, 93/68/EU, 89/336/EU, 91/368/EU,92/31/EU

EN60 335-1-88 (HD 251-1-3) BS 3456-201 EN292-1-91EN292-2-91 EN60204-1-92EN55014-93 (BS 800) EN 50082-1-92IEC 745-2-4 (HD 400.2) (BS 2769-2-2.4)

IEC 335 pt. 1-2, HD251 1-3 1982, BS 2769 & 3456, CSA C22.2,KEMA K78A1/W1 & W3, NEMKO 503./89, DIN VDE 0700 1/04.88HD 264.S2 15/07.86

Where the product is licensed to carry a National Approval Mark it iscertified that all such products comply with the terms of that license.

C.J. Hedger, Director of Engineering. 1 July 2003

17

SERVICE & REPAIR

Contact your reseller for the name of your local service agent. Service and repairs undertaken by non-approvedservice agents will void the product warranty. If you should have difficulty in obtaining service please contact yourdistributor nearest to you at the address given below.

For the latest list of Hiretech dealers check on the Hiretech web site at www.hiretech biz/contact/dealerlist.html.

Hiretech® is registered trademark of Hire Technicians Group Limited

Hiretech Pty Ltd

AUSTRALIA

Devomat Industries N.V.

BELGIUM

Deltaquip Supplies Ltd

CANADA

VIF Diffusion

FRANCE

Tool Matic A/S

DENMARK

Kage Enterprises

REPUBLIC OF IRELAND

Turner Morris (Pty) Ltd

Hire Technicians Group Ltd

UNITED KINGDOM

Hiretech Inc

USA

11 Government House Drive Tel: +61 247 356688Emu Plains Fax: +61 247 356682NSW Email: enquires@hiretech.com.au2750 Web: www.hiretech.biz

'FL. Geversstraat 31 Tel: +32 3 457 94 24B-2650 Fax: +32 3 457 49 24Edegem Email: info@devomat.be

Web: www.devomat.be

2282 Alpha Avenue Tel: +1 604 298 0566Burnaby B.C. Fax: +1 604298 8996V5C 5L6 Email: deltaquip@telus.net

Web: -

rue du Chateau-BP70112 Tel: +33 320 20788059052 Roubaix Fax: +33 320 207889Cedex 1 Email: infos@vif-furniture.com

Web: -

Vedskollevej Tel: +45 56250708Herfolge Fax: +45 562507054681 Email: sales@tool-matic.dk

Web: www.tool-matic.dk

73 New Road Tel: +353 1 459 2454Clondalkin Fax: +353 1 459 2535Dublin 22 Email: -

Web: -

39 Robyn Road Tel: +27 11 618 4313Benrose Fax: +27 11 618 2620P.O. Box 27252 Email: dbnsales@turnermorris.co.za

ctsales@turnermorris.co.zaWeb: www.turnermorris.co.za

Chalk Hill House Tel: +44 01923 3324248 Chalk Hill Fax: +44 01923 332425Watford Email: sales@hiretech.bizHerts Web: www.hiretech.bizWD19 4BH

661 Route 3 Tel: +1 518 562 3272Unit A Fax: +1 518 562 3279Plattsburgh Email: sales.usa@hiretech.bizNY 12901 Web: www.hiretech.biz

2011SOUTH AFRICA

MANUFACTURED BY

HIRE TECHNICIANS GROUP LIMITEDCHALK HILL HOUSE, 8 CHALK HILL, WATFORD,

HERTS, WD19 4BH. UNITED KINGDOM

TEL: +44 (0)1923 332424 FAX: +44 (0)1923 332425E-mail: sales@hiretech.biz Web: www.hiretech.biz

HIRETECH LIMITED WARRANTY®

Hiretech warrants to the original purchaser that the Hiretech machine covered by this warranty is freefrom defects in workmanship and materials. Should any part fail in the period of two years from the dateof the original purchase as a result of a defect, Hiretech will (at it’s option) either repair or replace thepart without charge provided that the machine has been operated in accordance with the OwnersManual and Operating Instructions.

Should any such defect arise, please contact your nearest authorised repair agent. Standard serviceover land mainland freight costs will be refunded on warranty repairs at the sole discretion of Hiretech orthe authorised repair agent. If the repair is non-warranty, the customer will be advised before any workis undertaken.

This warranty is the sole warranty by Hiretech and is in lieu of all other warranties express or impliedand releases Hiretech from all other obligations and liabilities.

This warranty does not apply to normal wear and tear to the machine, and in particular does not covernormal wear parts such as mains cable, wheels, switches, relays, brushes, rubber parts, hoses andbearings. This warranty also does not cover, and Hiretech will not be liable for, excessive wear causedby abnormal use.

Hiretech will under no circumstances be liable for alterations to the machine or for damage caused bythird persons, or for misuse or abuse of the machine, or damage caused during transportation. Repairsof the machine made or attempted by persons other than those specifically authorised by Hiretech shallrender this warranty void and Hiretech will not be liable for such repairs, the cost of such repairs, or theconsequences of such repairs. Where spare parts are used on the machine and they do not conform toHiretech specifications, this warranty will be rendered void and Hiretech will not be liable.

Hiretech will not be liable for any indirect or consequential loss, damage, cost or expense of any kindwhatever and however caused whether arising under contract, tort (including negligence) or otherwiseincluding (without limitation) loss of production, loss of profits or contracts or of operating time orgoodwill or anticipated savings.

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