Contracor 10112910 Manuel utilisateur
CONTRACOR GmbH
42327 Wuppertal,
Germany Art. 10112910
Portable Suction Blast Tool
POWER GUN
OPERATION MANUAL
Version 6.1
EN
DE
Mobiles Injektor Strahlgerät
POWER GUN
BEDIENUNGSANLEITUNG
Version 6.1
Seite 14
RU
Пистолет абразивоструйный
эжекторного типа
POWER GUN
РУКОВОДСТВО ПО ЭКСПЛУАТАЦИИ
Версия 6.1
стр. 26
2CONTRACOR®Version 6.1
ATTENTION!
READ AND FULLY UNDERSTAND THIS MANUAL BEFORE STARTING WORK.
THE FOLLOWING INFORMATION IS IMPORTANT FOR SAFETY AND HEALTH
OF OPERATOR AND PERSONNEL IN VICINITY.
ATTENTION!
AFTER PURCHASING THE BLAST MACHINE, PLEASE FILL IN THE
GUARANTEE CARD CORRECTLY!
FAILURE TO PRODUCE A FILLED-IN FORM WILL MAKE YOUR GUARANTEE
INVALID.
Contents
1. Safety 3
2. Package and Specication 4
3. General Description 6
4. Compressed Air and Abrasive 7
5. Set-Up and Operation 8
6. Adjustments 9
7. Maintenance 10
8. Troubleshooting 11
9. Spare Parts 12
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CONTRACOR®POWER GUN Art. 10112910
1. Safety
ATTENTION!
IMPORTANT WARNING FOR SAFER BLAST CLEANING
1. Tool operator and anyone within 50 feet of work area must wear
safety goggles.
2. Check for possible silicosis or other toxic hazards.
3. Do not blast with damaged or worn equipment.
4. Point nozzle only at area being cleaned.
5. Use only proper dry and well-screened abrasives specically
intended for blasting.
6. Keep unprotected workers out of the blast area.
7. Before blasting check ttings and hose for wear.
8. Do not substitute for parts from other manufacturers, or modied
equipment in any way.
4CONTRACOR®Version 6.1
2. Package and Specication
2.1 Package and Assembly
Pos.
#
Order Code Model Description
–10112910 Power Gun Portable suction type blast tool. Complete package incl. suction
lance and 5m suction hose
– 10112930 Power Set Portable Suction Blast Tool with blast media container
1 Air gun assembly
2 10112912 Lance
3 10112903 Hose, material
4 10112904 Clamp
5 10112970* PG-25 Blast media container
6 10151009* AirFlex-19 Air Hose ID=19mm, 5m
7 10150019* SKG-19 Compressed air coupling
8 10150011* Hose clamp 3/4” with safety claws
* Option, included in Power Gun Set, Article 10112930
2.2 Specication
Parameter Value
Air hose I.D. 19mm (3/4")
Suction hose I.D. 25mm (1")
Blast nozzle I.D. 12.5mm (1/2")
Air jet I.D. 6.4mm (1/4")
Max. working pressure 10 bar
Weight 8 kg (in box)
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CONTRACOR®POWER GUN Art. 10112910
1
2
5
4
3
7
6
8
8
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Fig. 2.1 Power Gun Set
6CONTRACOR®Version 6.1
3. General Description
The CONTRACOR POWER GUN is a suction blast tool ideally suited to small jobs
or locations with limited air supplies. Thanks to its light weight and compact dimensions,
the CONTRACOR POWER GUN can be used in places where erecting a conventional
pressure blast machine would be awkward or inconvenient.
The POWER GUN can be used with all common blast media, to clean or etch metal, glass,
stone or other hardwearing surfaces.
To operate the POWER GUN, just connect it to a compressed air source, and submerge
the suction lance to which the abrasive hose is connected partially into a container of blast
media.
To commence blasting, simply depress the lever on the POWER GUN. The tool operates
according to Bernoulli’s principle, where a low-pressure area is created by the compressed
air rushing past the abrasive-injection point, where the abrasive hose is connected to the
gun. This low-pressure area draws abrasive into the airstream, where mixing takes place.
The air-abrasive mix is then exhausted out of the gun and strikes the blasting surface.
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CONTRACOR®POWER GUN Art. 10112910
4. Compressed Air and Abrasive
4.1 Compressed Air Requirements
The table below shows approximate air consumption (m3/min) at various pressures (bar)
for the power gun alone.
Table 4.1.1 Air consumption in m3/min
bar 2.8 3.5 4.2 5.2 6.2 6.9 8.3 9.7
m3/min 1.15 1.4 1.7 2 2.3 2.6 3 3.4
4.2 Abrasive
Abrasive Size: The POWER GUN utilizes common abrasives that are 1.6mm and ner.
Limited air supply, low blast pressure, or heavy abrasive may limit abrasive to smaller sizes.
Use only abrasives specically manufactured for blast cleaning, that are compatible with
the surface being blasted. Abrasive produced for other applications may be inconsistent
in size and shape, and produce an unsatisfactory nish. Some abrasive may contain salts,
corrosives, or other materials that could contaminate the surface being blasted.
8CONTRACOR®Version 6.1
5. Set-Up and Operation
5.1 Set-Up
An air lter is recommended in the air supply to remove condensed moisture from the air
line.
Connect POWER GUN to a 19mm (3/4") lD air hose. An isolation valve is required at the air
source to enable depressurization.
Secure all compressed-air supply hose connections with safety lock pins to prevent
accidental disconnection.
5.2 Operation
Use the pointed end of the lance to pierce the bag of abrasive. Insert the lance into the
abrasive. The upper (air-intake) holes must remain open, and outside of the abrasive.
Pressurize the air supply line.
Put on the appropriate protective gear, including supplied-air respirator, abrasive resistant
clothing, leather gloves, and hearing protection as required.
Hold the gun approximately 150mm from the blast surface, and squeeze the trigger lever.
Adjust the stand off distance and angle for optimum performance.
5.3 Shutdown
When nished blasting, remove the lance from the abrasive and shake abrasive from the
material hose. If conditions are safe to do so, pull the trigger to further empty the hose.
When nished blasting, and after cleanup is completed, remove the respirator outside the
blasting area, where the air is safe to breathe.
Depressurize the air supply line and shutdown the compressor.
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CONTRACOR®POWER GUN Art. 10112910
6. Adjustments
6.1 Air Control Knob
The control knob adjusts
the force of air (blast pressure)
coming out the nozzle. Turning
the knob clockwise decreases the
blasting force for delicate jobs,
and turning it counterclockwise
increases the blast force for
tougher jobs.
6.2 Hand Positioning
Loosen the three setscrews (S)
securing the mixing chamber (M)
to the air jet assembly.
Rotate the mixing chamber (M)
to obtain the most comfortable
position while holding the grip
assembly and material hose.
Make sure the jet is fully seated
into the mixing chamber before
tightening the setscrews.
S M
S M
Fig. 6.1.1 Air Control Knob
Fig. 6.2.1 Hand Positioning
10 CONTRACOR®Version 6.1
7. Maintenance
ATTENTION!
Failure to observe the following procedure before performing any
maintenance or service could cause serious injury or death from
the sudden release of compressed air.
– Lock out and tag out the compressed air supply.
– Bleed the air supply line.
Periodically inspect the air jet, mixing chamber, nozzle, and material hose for wear.
A new nozzle has a 12.5mm (1/2") ID orice. Replace the nozzle when its diameter has
increased by more than 1.5mm or sooner if suction diminishes noticeably.
Periodically inspect the grip and trigger assembly for air leaks. Repair at the rst sign
of leaks.
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