DRESTER DB22S Boxer Double Solvent User Manual

DRESTER DB22S Boxer Double Solvent

Product Information

The Drester Boxer Double Solvent (DB22S / DI22S) is a cleaning unit designed for air-driven spray guns. It can be used with either thinner-based solvents or water-based solvents. The unit features two separate areas for cleaning: an automatic washer for spray guns with gravity-fed paint cups, and a sink for manual cleaning of other tools used in vehicle paint jobs. The unit requires a compressed air connection of 7-12 bar (110-180 psi) and consumes 150 liters/min (6 cfm) of air during operation (450 liters/min (16 cfm) if connected to a DRESTER AIRVENT 11660). Proper grounding is essential and can be achieved using the grounding cable included with the unit. For ventilation, there are three options available. It is important to comply with local laws and regulations regarding airflow speed at the hood opening. The ventilation must also be connected in a way that ensures the grounding of all parts. The unit is compatible with solvents and solvent mixtures intended for spray-gun cleaning, including acetone, toluene, isobutanol, and xylene listed as Group IIA according to IEC 79-20 (EN 60079-20). Water or water-based solvents can also be used. All solvents must have a pH value between 4 and 10, and it is crucial to avoid mixing water-based solvents with thinner-based solvents.

Product Usage Instructions

1. Ensure the unit is properly grounded using the included grounding cable.
2. Connect the unit to a compressed air source of 7-12 bar (110-180 psi).
3. Choose the appropriate ventilation option and ensure compliance with local laws and regulations.
4. Select the solvent or solvent mixture intended for spray-gun cleaning. Use solvents listed as Group IIA according to IEC 79-20 (EN 60079-20) or water-based solvents with a pH value between 4 and 10.
5. Do not mix water-based solvents with thinner-based solvents.
6. Refer to the automatic washer (item 1 illustration 1) for cleaning spray guns with gravityfed paint cups.
7. Refer to the sink (item 2 illustration 1) for manual cleaning of other tools used in vehicle paint jobs, such as spray guns with suction-fed fed cups, filler scrapers, and paint brushes.

Make sure to always have the user manual available for reference during operation.

PURPOSE OF THE MACHINE

The unit is intended for cleaning of air-driven spray-guns using either thinner-based solvents or water-based solvents.
The unit has two separate areas for cleaning:

1. An automatic washer (item 1 illustration 1), intended for cleaning of spray-guns with gravity-fed paint-cups.
2. A sink (item 2 illustration 1), intended for manual cleaning of other tools used in connection with vehicle paint jobs like guns with suction-fed cups, filler scrapers, paint brushes, and such.

All other uses of the unit are not allowed like:

• Emptying excess paint into the unit
• Cleaning of electric chargeable items
• Collecting of various waste
• Cleaning of textile materials
• Storing of items
• Cleaning of hands or other parts of the human body
• Cleaning of any items for food or drinks

ASSEMBLY

• First of all, check if the machine has been damaged during the transport. Remove the packaging and check again that the machine has not been damaged during the transport. If so, report this immediately to the transport company.
• Fit the flange for the extraction (item 3 illustration 1) with the 4 screws included (see detail illustration 12)
• Fit the glass window into place (item 13 illustration 1) (see detail illustration 13)
• The air-line on the left side of the unit (item 4 illustration 1) is during transport placed inside the unit. Take it out, and fasten it with the magnet in a convenient place on the left side. The air-line can be routed either outside the side-wall, or through the gap between the front lid and the side wall. This air-line is intended to blow out the spray-gun after the cleaning procedure.
• The air-gun on the right side of the unit (item 12 illustration 1) is during transport placed inside the unit. Take it out, and fasten it with the magnet in a convenient place on the right side. The air-line for the air-gun can be routed either outside the side-wall, or through the gap between the front lid and the side wall. This air-gun is intended to blow the spray-gun dry after the cleaning procedure.

PLACING THE UNIT

• The DRESTER BOXER DOUBLE S is equipment Category 2 (ref.
• ATEX-directive 2014/34/EU) and may therefore be placed in locations classified as Zone 1 (ref. ATEX-directive 1999/92 EC).
• If the DRESTER BOXER DOUBLE S is installed in locations classified as Zone 2 or in unclassified locations, the following  is valid provided that the ventilation of the unit is installed as described further down in this manual:
• The space within 1 m of the DRESTER BOXER DOUBLE S is to be classified as Zone 2, and the inside of the ducting as Zone 1 (see illustration 17).
• Within these areas, all equipment such as electrical items must be approved for the Zones described. Equipment that generates naked flames or sparks (e.g. welding or grinding equipment) may not be used in this area.
• Smoking is not permitted. If in any doubt, please contact the local fire service authorities for advice.
• This manual is part of the unit and must be available at all times.

INSTALLATION

Compressed air

• The unit must be connected to compressed air of 7-12 bar (110-180 psi). When in use, the unit consumes 150 litres/ min (6 cfm) of air (450 litres/min (16 cfm) if connected to a DRESTER AIRVENT 11660).
• The air is to be connected to the moisture trap inside the unit (item 1 illustration 2). To access this point, remove the front panel (item 5 illustration 1) by lifting it up-and-out. The air-line can be led into this point via the slots on the side of the unit, or through the open back of the unit. In either case, make sure that the air-line do not bend the hoses or in any other way harm the pneumatic system of the unit.
• To prevent pressure drops, the air line and couplings must be adequately dimensioned. The regulator on the unit is pre-set to 6.5 bar (100 psi). This is the optimal setting and must not be altered.
• The compressed air supplied to the unit must be clean and dry.
• If it is not first led through a water trap and filter, it may cause damage to the pneumatic components of the unit, which will invalidate any warranty claims.
• Fit a connector to the air-line on the left side of the unit (item 4 illustration 1). This air-line is intended to blow out the spraygun after the cleaning procedure.

Grounding the unit
Make sure that the unit is properly grounded by using the grounding cable (item 6 illustration 2).

Ventilation
There are three different options for the unit’s ventilation. For all three options, it must be ensured that the speed of the air flow at the opening of the hood complies with local laws and regulations. The ventilation must be connected in such a way as to ensure the grounding of all parts.

• Option 1: Connect the flange of the hood (item 3 illustration 1) directly to a metal ducting, which is in turn connected to a ventilation system approved for Zone 1.
• Option 2: Fit an air–driven AIRVENT 11660 to the hood and connect this in turn to a metal ducting. Connect this ducting to a ventilation system approved for Zone 1.
• Option 3: Connect the hood to an ATEX-approved electric ventilator via a metal ducting. The exhaust from the ventilator must be led outdoors.

PERMITTED SOLVENTS

• The unit can be used with solvents and solvent mixtures intended for spray-gun cleaning, such as acetone, toluene, isobutanol, xylene that are listed as Group IIA according to IEC 79-20 (EN 60079-20).
• The unit can also be used with water or water based solvents.
• All solvents must have a pH value between 4 and 10. Be sure not to mix water-based solvents with thinner-based solvents. It is important that all users are informed of what solvent is being used, at all times.
• Never use any solvent if it is not provided with an MSDS (Material
• Safety Data Sheet). Read the MSDS carefully, and follow all the instructions and procedures provided in the MSDS. If unsure, or if more information is needed concerning the solvent, please contact your solvent supplier.
• Do not add other chemicals to the solvent including, but not limited to, kerosene, gasoline, detergents, fuel oil or chlorinated solvents.

PERMITTED SOLVENT DRUMS

The DRESTER BOXER DOUBLE S can be used with different types of drums, but they must comply with the following:

• The drums must fit into the unit
• The drums must be leak-free.
• The drums must be made of a conductive material.
• Check for local regulations concerning max allowed volume for keeping solvent in the unit

Solvent drums are not provided by Hedson Technologies, thus Hedson Technologies does not take any responsibility for the drums. Follow the solvent supplier’s instructions carefully.

COLLECTING TRAY
The unit must be installed in such a way as to prevent accidental leakage of solvent from spreading into a drain water system, thus representing a hazard to the environment. This can be done by:

• installing the unit in a location where the floor and walls can hold any accidental drum leakage, or
• equipping the unit with a collecting tray beneath the solvent drums that is large enough to hold the volume of at least one leaking drum.

PREPARATIONS FOR USE

Solvent drums
Remove the front panel (item 5 illustration 1) by lifting it up and- out. Remove the foot-pedal console (items 6 illustration 1) by lifting it up and folding it out to the side (see illustration 2). Two drums are needed, one drum that is empty, and one drum full of solvent. Both drums must be of the same size, and they must meet the requirements described under chapter PERMITTED SOLVENT DRUMS. Both drums must be clean on the inside and they must not contain any solids or other objects that could be sucked into the pumps when running.
Drum plugs
There are several types of solvent drums on the market, each with different diameters of the opening. With the unit, cardboard boxes with a selection of tapered plugs are supplied (see illustration 3). Select the plugs that fit well into the opening of the drums, and fit them onto the drum adaptors of the hoses (see illustration 4).
Solvent fill-up
Use one empty drum and another drum of the same size full of clean solvent. Place the empty drum to the left underneath the unit (item 2 illustration 2). Insert the group of hoses containing the drain hose from the sink into this drum (item 4 illustration 2). Make sure that the hoses are properly led well down into the drum, and that the opening is well sealed by the tapered plug. Take the second drum, the one full of solvent, and pour half of its contents directly into the gun cleaner’s sink (item 2 illustration 1). The solvent that is poured in will drain into the drum underneath the gun cleaner. Make sure to have the ventilation running during this procedure. Place the second drum, now half full, on the floor on the righthand side of the first drum (item 3 illustration 2). Insert the second group of hoses containing a white hose into this drum (item 5 illustration 2). Make sure that the hoses are properly led into the drum all the way down to the bottom, and that the opening is well sealed by the tapered plug. The solvent system is now filled-up. Both drums should be half full. The left-hand drum contains the solvent that will be recirculating for the automatic wash cycle, and the right-hand drum contains a clean solvent for rinsing. The contents of the right drum will gradually be used up and transferred to the left drum.

Operating instructions

• Operating instructions should be formulated on the basis of this manual and translated into the language spoken by the employees.
• It should always be available close to the machine. To avoid confusion, the employees must be informed about the solvent currently being used in the machine.
• Empty the spray-gun of any residual paint into a separate spillsdish.
• Open the main valve for compressed air (item 7 illustration 1).
• Open the lid for the automatic washer (make sure it clicks into the full open position). Place the spray-gun inside (see illustration 5).
• Be sure to fit the trigger clip following illustration 6, and to push the spray-gun up against the nozzle for the paint-channel (item 1 illustration 5) before you lock it into position with aid of the magnets of the trigger clip.
• If you prior to cleaning prefer to remove the Air-cap and the needle of the spray-gun, then place those items as shown by arrow 5 in illustration 5.
• Close the lid, and start the automatic pre-wash cycle by pressing the foot pedal No.8 in illustration 1. The spray-gun will now be automatically cleaned for approx. 1.5 minutes with circulating solvent.
• When the automatic pre-wash cycle is completed, the spraygun can be rinsed with clean solvent.
• The rinsing pump is activated by pressing the foot pedal No. 9 in illustration 1, and continues to work for as long as the pedal is depressed.
• The pump will feed approx. 75 cc of solvent per pump stroke. 2-3 pump strokes are generally sufficient for one rinse. Less if the solvent has recently been changed.
• When the cleaning procedure is completed, the lid can be opened and the spray-gun taken out. It can now be manually further washed or rinsed if required.
• By pressing foot pedal No.10 in illustration 1 (NOTE: press it all the way down !), recirculating solvent will be fed through the brush placed in the sink (item 1 illustration 7).
• By pressing foot pedal No.11 in illustration 1, clean solvent will be fed through the spray-nozzle placed in the sink (item 2 illustration 7).
• The brush and spray-nozzle in the sink can be used independently of the automatic washer at any time, provided that the lid for the automatic washer is closed.
• The intensity of the spray can be adjusted with the air-flow restrictor (item 1 illustration 14).
• Connect the spray-gun to the air-line on the left side of the machine (item 4 illustration 1), and blow out the spray-gun through the funnel in the sink (item 3 illustration 7).
• By using this funnel, you prevent the fumes from spreading within the premises.
• Finally, the spray-gun can be blown dry by using the air-gun on the right side of the unit (item 12 illustration 1).
• Close the lid after cleaning.

SERVICE

Weekly:

• Remove the strainer at the bottom of the automatic washer (item 2 illustration 5) and clean it, do not forget to re-fit it!

Monthly:

• Remove the five nozzles automatic washer and clean them with clean solvent. (see illustration 8).

When changing drums:

• Check and if necessary clean the strainer on the suction hose for circulating solvent.

SAFETY INFORMATION

• Hazards may arise from improper use of the DRESTER BOXER
• DOUBLE S. Hazards may also arise from improper choice/handling of drums or solvent. In order to maintain the high safety standard of the unit, it is important that these instructions are followed.
• Do not operate the unit until you have read and fully understood this entire User’s Manual.
• The unit should be isntalled as described in the instructions.
• The unit should be used as described in the instructions.
• The unit should be maintained as described in the instructions.
• Only original spare parts may be used.
• This User’s Manual must be available and in legible condition in close proximity to the unit. Every user shall know where to find the User’s Manual.
• Operating instructions should be formulated on the basis of this Users Manual, and translated into the language spoken by the employees.
• Do not modify or in any way alter the unit.
• Do not operate the unit unless it is properly vented. Do not operate the unit if the extraction of vapors is insufficient.
• Avoid contact with liquid and vapor. Refer to the solvents’ MSDS (Material Safety Data Sheet).
• Wear chemical goggles or similar, to protect your eyes. Wear chemical-resistant gloves to prevent skin-contact. Wear chemical-resistant clothing to protect against spills or splash.
• Personnel suffering from respiratory problems or allergies to solvents used, must not operate the machine.
• Clean up spills immediately. Solvent vapours are heavier than air and can spread a long way. They may also collect in pits or other low areas.
• Do not smoke, eat or drink while close to the unit.
• The unit is equipped with a safety valve that will interrupt the automatic wash cycle if the lid is opened before the wash cycle is completed.
• A fire extinguisher must always be kept nearby when working with flammable solvents. Do not use water.
• Spray guns or any other paint equipment items cleaned in the unit must be suitable for cleaning in a Zone 1 area (ref. Category 2 according to EN 13463-1/2001). If unsure, please contact the spray gun manufacturer.
• The unit must be properly grounded using the attached grounding cable.
• If plastic drums are used, the openings should be wiped off with a damp cloth, to avoid static electricity, before inserting or removing any hoses or other equipment.

TECHNICAL DATA

• Manufacturer: HEDSON TECHNOLOGIES AB
  • Hammarvägen 4
  • SE-232 37 Arlöv
  • Sweden
• Tel.: +46-40- 53 42 00
• Type of machine: DRESTER BOXER DOUBLE S
• Permitted solvents: See section “Permitted Solvents”
• The max solvent volume of machine: 30 + 30 liters (Check for local regulations concerning max allowed volume for keeping solvent in the unit)
• Maximum drum size: 60 litres
• Compressed air needed: 7-12 bar (110-180 psi)
  • 90 l/min (3 cfm) pump only
  • 370 l/min (14 cfm) including
  • AIRVENT 11660 in operation
• Ventilation capacity: 200-500 m3/h (118-294 cfm) -> 0,2-0,5 m/s (0,7-1,6 fps)
• Pump capacity: 10 l/min
  • Solvent pressure 2 bar (30 psi)
  • Weight 75 kg (140 lb)
• Overall dimensions:
• Height: 1510 mm (59,5”)
• Width: 835 mm (33”)
• Max depth: 650 mm (25,5”)
• Depth at the floor: 610 mm (24”)
• Extractor diameter: 125 mm (5”)
• Sound pressure level: <70 dB(A)

CONTACT

• Hedson Technologies AB
• Hammarvägen 4
• 232 37 Arlöv, Sweden
• Phone + 46 40 534200
• Fax + 46 40 432901
• www.hedson.se.
• 16012 rev 2022-02-01

© Hedson Technologies AB 2012 1 16012 rev 2022-02-01

References

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