- DEMI2 Operation Manual [ Japanese ]
Important︓Read and follow all instructions and SAFETY PRECAUTIONS before
using this equipment
MODELS
DEMI2 - Air Cap No - Fluid Tip Size - G: Gravity
(example): DEMI2-DL8-1.1-G ←( DL8 Cap - Size 1.1mm - Gravity )
SPECIFICATIONS
Maximum working air pressure: 0.69MPa Maximum Paint Pressure: 0.69MPa
Weight: 190g
Fluid Inlet: G1/4 Air Inlet: G1/4
Table .1
Air Cap No.
Part No.
Type of
feed
Air consumption
Gun inlet pressure
Pattern width (mm)
DL8
DM2-3-DL8
G
80L/min
0.10MPa
140
DL6
DM2-3-DL6
G
60L/min
0.10MPa
90
Table .2
Fluid Tip
Part No.
Needle
Part Number
Tip size (mm). Application
DM2-4-1.1 DM2-41-1.1 1.1 Spot, Touch-up
DM2-4-0.8 DM2-41-0.8 0.8 Spot, Touch-up
DM2-4-0.5 DM2-41-0.5 0.5 Deodorant, Hobby
Ref.
No.
Part No. Description Qty
1 DM2-6 Retaining Ring Assy. 1
2 DM2-55-K5 Ring Seat (Kit of 5) 1
3 See Table 1 Air Cap 1
4 See Table 2 Fluid Tip 1
5 DM2-35 Paint Nipple (with Seat) 1
6 DM2-44 Pattern Valve 1
7 DM2-443 Air Seal Kit 1
8 DM2-43 Air Valve 1
9 DM2-25-K5 Valve spring (Kit of 5) 1
10 DM2-12 Air Valve Bushing 1
11 See Table 2 Needle 1
12 DM2-14-K5 Needle Spring(Kit of 5) 1
13 DM2-13 Needle Adjust Knob 1
14 DM2-463 Needle Packing 1
15 DM2-45 Bearing Stud Kit 1
16 DM2-108 Trigger 1
17 DM2-42 Cheater Valve 1
18 DM2-30 Air Connector 1
DEMI2
Operation Manual
2
SAFETY PRECAUTIONS
This manual contains information that is important for you to know and understand.
This information relates to USER SAFETY and PREVENTING EQIPMENT PROBLEMS.
Read and follow SAFETY PRECAUTIONS before using this equipment.
FIRE OR EXPLOSION HAZARD
1. When spraying, adequate exhaust must be provided to keep air free of accumulations of flammable vapors which may
cause fire or explosion.
2. Smoking must never be allowed in the spray area.
3. Static electricity is generated and a static spark could be produced in the spray area. To prevent the risk of fire or
explosion, ground without fail all conductive objects in the spray area.
4. Make it sure to use and ground hoses with static wire for spray gun operation. If improperly grounded, a static spark
possibly produced may cause fire or explosion.
5. Fire extinguishing equipment must be provided in the spray area.
6. Solvents used for cleaning must have a flash point equal to or higher than that of the coating. Those for general
cleaning must have flash points above 37.8°C (100°F) to prevent the risk of fire.
INHALING TOXIC SUBSTANCES
1. Toxic vapors and liquids are harmful to health. When spraying, adequate exhaust must be provided to keep the air
free from accumulations of toxic materials and in the use at all times of respiratory protective equipment must be set
compulsory.
2. Always wear eye protection when spraying or cleaning the equipment.
3. Certain materials may be harmful if contacted with the skin. Read all labels and safety performance data of the
materials and solvents to be used. Appropriate clothes and gloves must be worn for spraying or cleaning the
equipment.
MISUSE
1. Operators should be given adequate and appropriate training in the safe use and maintenance of this equipment.
2. Pressured liquids may injure eyes. Do not point the spray gun to any person.
3. Gravity or suction feed gun must not be used for pressure feed gun.
4. Parts with compressed air may damage the human body. Connect air hoses tightly by using a spanner so that air
never leaks. If tightened loosely, hoses can be removed which may result in damaging the human body, objects to be
coated and other equipment used together.
5. Parts with compressed air or under spring pressure may injure the human body. When replacing such parts, clean the
spray gun by discharging the materials, discharge the air, remove air hose and fluid cup and then replace such parts
by placing the gun flat. Eye protection must be worn when repairing the spray gun.
6. Do not use the gun above maximum working pressure (0.69MPa).
INSTALLATION
1. The air supplied to spray gun must be cleaned, which any water, oil and solid material removed. It is recommended
to set up the Mist Separator and Air Transformer near the gun. The use of air not cleaned may cause coating troubles.
2. Connect fluid cup and air hoses tightly. If loose, hoses may disconnect, which may result in injuring the human body,
damaging objects to be coated and other equipments used together.
3. Adjust Needle Packing (15) before use of a brand new gun. Tighten the Packing Nut (16) gradually and then to adjust
the needle moving smoothly. Untighten until the Needle (12) is not well pulled back.
OPERATION
1. The recommended pressure of air supplied to gun is in a range of 0.39MPa~0.49MPa. Do not supply to gun the air
pressure in excess of the gun’s maximum working pressure (0.69MPa).
2. Try with the pressure starting from 0.2MPa or around as the spraying pressure varies depending upon the inner
diameter of gun, triggering distance, materials etc.
3. The recommended spray distance is 180mm. If the spray distance is too far, good results will not appear.
4. In order to get uniform finishing the spray gun should be held vertically toward the painting surface.
PREVENTIVE MAINTENANCE
1. Daily lubrication and cleaning is necessary to maintain the best condition of the gun.
2. To clean the gun body, wipe exterior with solvent dampened cloth. Do not submerge the gun
body in solvent as any solids may get into the air passage and cause troubles.
3. Do not leave the gun with solvent in fluid cup. Clean the spray gun after used with clean solvent
and empty the cup. To clean the fluid cup, after removing extra paint, through the appropriate
3
solvent and flush down the residual paint.
4. The Air Cap can be immersed in solvent and brushed down for cleaning. If orifices are clogged,
use a toothpick to remove obstruction. Never use a steel wire or hard instrument. This will damage
air cap and result in a distorted spray pattern.
5. Do not immerse any plastic parts in solvent for long time.
6. Certain portions of gun should be lubricated. Do not lubricate to any portion where not
instructed. For lubrication, SSL-10 Gun Lube* is recommended (*sold separately, vegetable
not repelling materials).
7. The following portions should be lubricated regularly; Trigger Stud (15), Pattern Valve (6),
threads of cheater Valve (17) and Adjusting Screw (13), Air Valve (8) stem, portion of Packing
Gland (14) here Needle (11) comes in and out.
8. When installing Air Cap (3), make sure no foreign materials adhered on Retaining Ring (1) and
thread of body and then oil one drop of Gun Lube SSL-10.
9. Apply non-silicone grease lightly on Needle Spring (12) and Air Valve Spring (9). Do not apply
too much grease as it may clog the air passage.
REPLACEMENT OF PARTS
Before replacing gun parts, remove materials from the gun for cleaning. Then release the air pressure in the
gun and disconnect air hoses. All repairs should be made on a clean flat surface. Use only appropriate tools
indicated for replacement of parts.
Fluid Tip (4) and Needle (11)
1. It is recommended to replace Fluid Tip (4) and Needle (11) as a set.
2. Loosen completely Pattern Valve (6) by turning the knob counterclockwise.
3. Remove Adjusting Screw (13) and Needle Spring (12) and then withdraw Needle (11) from the gun
body.
4. Remove Retaining Ring (1) and Air Cap (3).
5. Remove Fluid Tip (4) by using socket wrench, offset wrench or the spanner .
6. Recommended torque of Fluid tip is 8N·m when you re-assemble.
Fluid Inlet and Air Connector (18)
Fluid Inlet and Air Connector (18) are fixed together by sealing material. Do not disassemble these
connectors if it is not necessary. It may become a cause of problem.
Pattern Valve (6) and Cheater Valve (17)
When disassembling and reassembling Pattern Valve (6) and Cheater Valve (17), turn the knobs
completely counterclockwise and then disassemble or reassemble them.
Air Seal Kit (7)
1. Remove Needle Adjusting Screw (13) and Needle Spring (12) and then withdraw Needle (11) from
the Gun Body (8).
2. Remove Air Valve Bushing (10), Valve Spring(9), Air Valve (8).
3. From the back of the Trigger (16), push the front part of the Air Seal Kit toward the back of the gun
to remove it.
4. Hook the rear part of the Air Seal in the Air Valve Bushing (10) using a thin wire to remove it.
5. Do not reuse the removed Air Seal because usually it has been damaged.
6. Attach the new Air Seal, and then insert it into the body and Bushing. See the exploded view and be
careful of the installation direction when attaching.
Needle Packing (14)
1. Remove Bearing Stud kid (15) and Trigger (16) using flat-blade screwdriver.
2. Remove Fluid Adjusting Knob (13) and Needle Spring (12) from gun, and then remove Fluid Needle
(11).
3. Loosen and remove the Packing (14) using wrench .
4. Re-assembling the Packing (14). Assemble into gun body by hand and then tighten using the wrench.
5. Insert Fluid Needle (11), and then Needle Spring (12), and Needle Adjusting Knob (13).
6. Re-assembling Bearing Stud kid (15) and Trigger (16) using flat-blade screwdriver.
7. Trigger the gun several times to verify correct operation and adjust the packing by using the wrench.
4
SERVICE CHECKS
Problem Cause Countermeasure
Will not spray No pressure to gun.
Adjusting Screw (13) not properly adjusted.
Check air and material lines.
Adjust.
Improper spray pattern
A,B : Material build up on the Air Cap or
Fluid Tip.
C,D : Incorrect fluid delivery or viscosity.
A,B : Clean the Air Cap or Fluid Tip.
C,D : Adjust.
Jerky or fluttering spray
Insufficient material in the cup or Loose
connector.
Gun material passage plugged.
Worn Needle Packing (14).
Loose or damaged Fluid Tip (4).
Fill cup or tighten the Connector. Clean.
Clean.
Replace.
Tighten or replace.
Fluid leaking from needle
packing nut (14)
Loose of Needle Packing (14)
Worn or damaged Needle Packing (14).
Tighten Needle Packing (14).
Tighten or replace.
Dripping from fluid tip(4) 1. Wo r n o r damaged Fluid Tip (4) or
Needle(11).
2. Stuck Needle Packing (14) or
Needle(11).
3. Incorrect adjustment of Needle Packing
(14)
4. Loose Adjusting Screw (12)
1. Replace.
2. Lubricate.
3. Hold the end of the Needle (11) with your
hand to adjust. Fix it but leave some
space so that it can still move a little bit.
4. Adjust.
ACCESSORY
Part No. Description Part No. Description
KG-250DEMI Upper cup (250cc) SUS HAF-507 Disposable Air Filter
KG-250-FA-DEMI Upper Cup (250cc Free Angle) SUS SSL-10 Gun Lube (60ml)
KG-150-FA-DEMI Upper Cup (150cc Free Angle) SUS 42884-214-K5 Cleaning Brush (kit of 5)
DAH-10 Air Hose Set (10m) SHIM-3 SHIM MASK
DAH-20 Air Hose Set (20m) D803553-K12 Anti-Static Wiper (kit of 12)
HAV-503-B Air Adjusting Valve with Gauge
OM_HG_DEMI2-J03_2025.05
