IPT GNV-19 Bedienungsanleitung

2010

--------------------------------------------------------------- IPT Technologies AB---------------------------------------------------

______________________________________________________________________________________________________

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Tegeluddsvägen 92 Nat 08-664 34 74 Nat 08-664 21 55 5799-4188 Handelsbanken

S-115 28 STOCKHOLM Int +46 8 664 34 74 Int +46 8 664 21 55 Lidingö

GNV-19 Needle Scaler is a remarkable tool! In spite of its very

small size it is very powerful and runs with hardly any vibrations

due to the advanced, patented anti-vibration system. The low weight

makes it possible to operate with one hand and the low vibration level

minimizes long term health risks and lowers fatigue. This makes it

possible to use the tool for long time periods. The noise level is also

quite low compared to other tools.

Following these simple instructions will ensure a long life of excellent

operation. Note that this tool needs generous lubrication.

•Low air consumption

•Low noise level

•Rubber sleeve and grip

for comfort

•Easy needle exchange

•Extremely low vibration

General Information

The Needle Scaler is designed to operate at an air pressure of 6.5 to 7

bar, but will tolerate some additional variation without much change in

performance. Do not exceed 8 bar pressure (although normally the

excess pressure will discharge into the atmosphere). Connect to a 10

mm or larger hose.

The compressed air should be dry and clean. A filter unit should always

be used. Inline lubrication is recommended. Where this is not available,

apply a generous amount of oil at the inlet every 4 hours of operation!

See page 6 for information regarding accessories.

GNV-19, page 2

Important safety notes

All local safety rules with regard to installation, operation and

maintenance shall be adhered to at all times. Always use adequate

personal protective gear, e.g. safety goggles, noise protection, gloves

etc. as appropriate.

Always disconnect the tool from the air hose before changing needles or

making other adjustments.

Make sure there is no accumulation of water or dirt in the compressed air

hose by carefully blowing the hose clean before connecting the tool. The

compressed air should be dry and clean. A filter unit should always be

used.

Warnings

•Do not exceed 8 bar pressure. Use a regulator set to 6.5 to 7 bars.

•Power tools are generally not insulated. Do not use near or in contact

with electric power sources.

•Power tools shall not be used in explosive atmospheres.

•Do not use needles or chisels that are broken, cracked or deformed.

Use only accessories designed for this tool.

•Stored compressed air may cause a hazard.

•Long hair or loose clothing may be drawn in or trapped by the tool.

•Make sure that any sparks that may be emitted are directed so as not

to cause a hazard.

•Be aware of the risk of a whipping compressed air hose.

•Use a facemask or respirator if dust is created by the work.

GNV-19, page 3

Operation

The Needle Scaler is designed for rust and paint removal, weld dressing

and scaling, deslagging, cleaning concrete, etc. It is powerful and has a

very high scaling efficiency. The remarkably low vibration level makes it

possible to work with higher precision than with other tools and the noise

level is low compared to other needle scalers. With these ergonomic

features you can work for longer periods without fatigue.

As the GNV-19 doesn’t work exactly in the same way as conventional

scalers, you need to get acquainted with the tool to be able to fully take

advantage of the advanced features.

The scaling efficiency depends somewhat on the force you apply on the

tool. For efficient material removal you will find that an intermediate force

works the best. Don’t be fooled by the fact that you don’t feel a lot of

vibrations. The tool is very strong and works fast. Look at the result on

the surface you are working on!

The discharge of the compressed air is through the front of the tool.

Some air circulates in and out of the tool through an opening between

the rear (21) and the housing cover (23). This circulation is directed

towards one side and downwards but the opening in the housing cover

can be rotated to direct the circulation flow as desired.

This tool is a low vibration tool. If you can feel that the vibration level has

increased, stop using the tool! Increased vibrations indicate that

something is wrong and continued operation might damage or destroy

internal parts. The reason for more vibrations can be a damaged

housing, a broken spring or other part. It can also depend on that the tool

has been pulled apart and not been assembled properly.

For applications that produce a lot of dust it may be advantageous to

connect the tool to an industrial vacuum cleaner. This can be done via a

vacuum attachment that fits around the front part of the housing. See

page 6 for the part number.

The tool can also be fitted with a chisel adapter for occasional chisel

work. See page 6 for the part number.

GNV-19, page 4

Changing Needles (See separate Instructions for Non-Spark Needles.)

Note: Always disconnect the tool from the compressed air line when

removing or loading needles. Work on a workbench to prevent parts from

falling on the floor. Do not point the tool downwards when removing

the needles. Parts can then fall out and cause damage.

Push in the Front (2) and twist to release the bayonet grip. The Front can

now easily be pulled out as well as the Needles with the Needle Holder

(4) and the Forward Spring (3).

Replace the Needles in the Needle Holder making sure that the

orientation is per the picture below. The heads of the Needles should be

on the “top side” (the side curved upwards) of the Needle Holder.

Place the Forward Spring around the Needles and insert the package

inside the Housing. Follow with the Front, push and twist it into position in

the bayonet. Make sure it snaps into position. The hold will become more

powerful when the air is turned on.

Be careful not to scratch the Forward Spring. A scratched or damaged

spring can fail at any time.

Use only quality needles. Inferior needles will wear quickly and break

more easily. The GNV-19 is strong and doesn’t need any chisel shaped

needles for normal applications. It comes with flat end needles as

standard. Chisel shaped ends can easily leave deep marks on the

surface you work on and the ends need to be re-sharpened frequently.

GNV-19 comes with 127 or 140 mm long needles (3.2 mm diameter).

They give optimal performance both regarding scaling efficiency and

vibration level Longer needles can be used. Always use needles of the

same length. Replace any needles that break or the tool will not work as

intended. Use the full number of needles at all times. Grind down any

replacement needle to match the length of the needles already in place.

Needle head on top!

GNV-19, page 5

Maintenance

Lubricate regularly (disconnect the scaler from the air hose and apply a

generous amount of oil at the air connection). Use only quality air tool oil.

Use about 1 cm3for every 4 hours of continuous operation. If the

compressed air already contains oil from a continuous lubrication unit,

there will generally be no need for extra lubrication.

Lack of lubrication will result in

excessive wear of critical parts

inside the tool, and also of the

needles and the needle holder

Note: Do not open the tool (except for changing needles) as it will void

the warranty!

The Housing (5) is threaded into the Rear (21) using Loctite on the

threads. Do not clamp the Housing into a vice! Deformation of the

Housing will result in poor performance and increased levels of vibration.

Use only original IPT spare parts for any replacement! Other parts may

result in decreased performance and/or increased wear and/or damages

to the tool.

Warranty

The GNV-19 Needle Scaler is warranted for 12 months from the date of

purchase against faulty workmanship or materials provided the tool has

not been opened by unauthorised persons, has always been lubricated

and connected to a filtered air supply of the recommended pressure.

Please return any defective tool to your authorised supplier.

This warranty does not include repair or replacement required because

of misuse, abuse or normal wear and tear.

Use only original IPT spare parts for any replacement. Other parts may

result in decreased performance and/or increased maintenance and

wear.

GNV-19, page 6

Accessories

Needles, 3.2 mm diameter x 127 mm long, Set of 19 G-19-01

Needles, 3.2 mm diameter x 140 mm long, Set of 19 G-19-01L

Chisel Adapter for Cleco style chisels G-19-50

(See HRV-601A for available chisels)

Vacuum Attachment G-19-90

Spare Parts Ordering

See the exploded view on the last page for names and numbers of spare

parts. For ordering, simply use the pre-fix G-19- followed by the number

from the table. E.g. Needle Holder G-19-04.

Technical Data

Length 272 mm

Weight 2.4 kg

Vibration Level1≤2.0 m/s²

Noise Level298 dB (A)

Frequency of Strokes 110 Hz

Maximum Air Flow 120 l/min

Air Pressure 6.5-7 bar

Maximum Air Pressure 8 bar

Maximum Air Temperature 35 °C

Hose Coupling 1/4 inch

Size Hose Recommended 10 mm

1Per ISO 8662-14 working on a steel ball energy absorber. As shown in ISO 5349 there is a strong correlation between

vibration level and vascular diseases such as e.g. “white fingers”. This is a very low value and doesn’t vary much for different

working conditions. Most conventional tools have much higher vibration levels, when measured with the same methods.

2Idling. (When working on metal the noise level is generally higher). The tests were made with microphones placed 1.6 m

above the floor level and 1 m from the surface of the tool with equipment according to class 1 (IEC 651).

GNV-19, page 7

This page for notes:

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