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• HireTech HT8 EX Owner's Manual & Operating Instructions

HireTech HT8 EX Owner's Manual & Operating Instructions

Download Owner's manual & operating instructions of HireTech HT8 EX Sander for Free or View it Online on All-Guides.com.

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SERVICE & ROUTINE MAINTENANCE

CAUTION: maintenance and repairs must be carried out

by authorised personnel only. To prevent injury, always

remove the power cable from the power supply before

undertaking any work on the machine. Do not operate the

floor sander unless it is fully assembled and all guards are

in place. Use Hiretech genuine spare parts only.

General

1. Always make a list when first examining the machine, to

remind you of parts or action needed on completion of repair/

service.

2. The HT8-1.2 is subject to high speeds. All screws should be

fitted using a suitable thread lock compound.

3. On completion of any work or service on an electrical tool

or appliance statutory safety tests must be carried out by a

competent person and recorded (see Testing for Electrical

Safety page 8).

4. The HT8-1.2 needs no lubrication during routine servicing.

5. Always ensure that the electrical supply is disconnected

before starting any routine servicing or repair.

Visual Inspection

1. Check that the drum guard Ref.35 is in good condition and

functioning correctly. Ensure that the Warning Label Ref.36 is

present and legible.

2. Check all other guards and mechanical parts are in good

condition.

3. Examine the power cable Ref.39 and the handle cable

Ref.20. If the outer insulation shows the slightest of abrasions

or the inner conductors are exposed, then the cable must

be replaced. The cable must not be repaired with tape or

insulation sleeve

4. Examine both the mains plug and the interconnecting socket,

Body Twist Lock Ref.24. The plugs must be opened and

examined (see Electrical Testing page 8).

5. If a cloth type bag is in service check the condition, old

clogged cloth dust bags make for an inefficient dust pickup.

6. Ensure that all labels are present and in good condition.

Drive Belts

1. To examine the condition of the Drive Belts Ref.164 and

Ref.165 remove the four screws Ref.83 and the Belt Guard

Ref.81.

2. Lift the Fan Belt Ref.165 while rotating the pulley remove the

fan belt. Repeat for the Drum Belt Ref.164.

CAUTION - take care to avoid trapping your fingers when

removing or replacing the drive belts.

3. Examine the pulleys for wear, worn or damaged pulleys

should be replaced

4. To reduce the instance of belt breakage, examine the drive

belts, look for cracks or fraying and replace if necessary with

new belts. To replace reverse the above procedure taking

care to avoid bending the belts tighter than the pulley diameter

as this can result in damaged belts. Refit the belt guard.

Dust Control System

1. For efficient dust pick up ensure that cloth type dust bags are

clean and unclogged and that the intake is clear and properly

adjusted.

2. Turn the machine on to its side and loosen the three Screws

Ref.71 and remove the Dust Shoe Ref.72 and clear any

obstruction. The grit from the abrasive paper can wear away

the leading edge of the dust shoe, if this has occurred then file

or grind the leading edge level before refitting.

Install the dust shoe ensuring that the clearance between the

shoe and the drum is maintained at 3/8ì (10mm).

Lubrication

1. The HT8-1.2 is completely lubricated. The bearings are

sealed and do not require lubrication. In the unlikely event

that a bearing requires replacement use a Hiretech genuine

spare part only as the grease contained in these bearings is

special. A standard bearing is not suitable and may result in

further damage.

Sanding Drum

Note: In operation The sanding belt is held in place on the sanding

drum by centrifugal force. It is important that the drum rubber and

abrasive guides are maintained in good condition at all times.

Store and transport the HT8 EX with a sanding belt in place at all

times to protect the drum rubber.

1. Check that power supply is disconnected. Tilt the machine

back and rest the handle on the floor. Open the drum guard

and remove the abrasive belt if fitted. Inspect the condition

of the drum rubber. A damaged or worn drum rubber must

be replaced to maintain machine performance. A damaged

or worn drum rubber can result in poor sanding performance

with subsequent damage to the floor surface and can be

dangerous in operation.

If the machine moves from side to side when sanding or you

are experiencing inconsistent sanding performance this can

indicate a worn or damaged drum rubber. This is caused

because the drum rubber is not gripping the sanding belt.

2. To replace the drum rubber contact your local Hiretech

Service Agent. Hiretech operate a simple exchange program

to replace HT8 EX Sanding Drums. Please contact your local

service agent for information, service levels and pricing. For

further information visit www.hiretech.biz.

3. Check the condition of the Abrasive Guides Ref.142. It is very

important that the Abrasive Guides are maintained in good

condition. The Abrasive Guides ensure that the abrasive belt

runs evenly and centred on the sanding drum. Worn Abrasive

Guides will cause wear to the drum rubber, result in poor

sanding performance and cause damage to the machine and

floor surface. Worn guides will also damage the abrasive belt

and may cause it to tear.

The Abrasive Guides should not be worn by more than 3mm

(0.12in).

4. When fitting new Abrasives Guides ensure that the correct

gap is maintained between the edge of the sanding drum and

the Abrasive Guide fitted to the inside face of sanding drum

(frame side).

Remove any abrasive belt fitted, using the Spacer Guide

Abrasive Ref.143 adjust the gap between the Abrasive Guide

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© Hiretech