Steel Core 40828 User manual

*Actual product may vary slightly
Please carefully read and save these instructions before attempting to assemble, maintain, install, or operate this product.
Observe all safety information to protect yourself and others. Failure to observe the instructions may result in property
damage and/or personal injury. Please keep instructions for future reference.
For warranty purchases, please keep your dated proof of purchase. File or attach to the manual for safe keeping.
For Customer Service, Call 1-800-348-5004
or e-mail [email protected] 40828 11/2017
2 PIECE HVLP GRAVITY FEED
SPRAY GUN KIT
40828
Item Detail Gun Large Gun
Air Pressure Range 30 – 40 PSI
Maximum Air Pressure 40 PSI
Air Consumption 9 CFM @ 40 PSI 12 CFM @ 40 PSI
Cup Capacity 4.2 fl. oz. 20 fl. oz.
Air Inlet 1/4"–18 NPS

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1. Putting into operation
Before putting into operation, and especially after any repair work, check to see that all nuts and bolts are tight.
Always disconnect the unit from the air supply before carrying out any repair work.
a) Mount the nozzle set tightly. Align the air nozzle so that the number stamped into it can be read from the front the right way round.
b) Blow out the air hose before attaching it to the air connection (1/4"). (Air hose pressure-resistant up to min. 10 bar and
solvent-resistant. Total electric resistance: less than 100 million Ohm.)
c) The paint spray gun has been treated with an anticorrosive agent before leaving the factory and must therefore be flushed out
thoroughly with thinner before use.
2. Adjusting the volume of air using the compressed-air micrometer
the air supply can be regulated extremely fine to suit all operational conditions. Micrometer in vertical position (parallel to gun body)
maximum atomization. Micrometer in horizontal position (across gun body) minimum atomization (for blending, etc.).
During operation, never remove hollow screw by using the small hollow key in order to remove the micrometer.
3. Reduction of the material volume
The volume of material flowing from the nozzle and thus the needle stroke can be reduced steplessly by screwing in the
material-volume regulation screw.
4. Changing the nozzle set
Always change the complete nozzle set whenever changing nozzle size. These components, which consist of air cap,
fluid nozzle and paint needle, are supplied as a complete set. lnsert paint nozzle before paint needle.
5. Exchanging the air piston and air piston packing
To replace the air piston remove the hollow screw and detach the air micrometer. Pull out spring and air piston.
Exchange the air piston. Unscrew stuffing box screw and remove the old packing. Now insert new Packing with flat end first and
gently tighten stuffing box screw towards packing.
6. Cleaning and maintenance
a) Flush the material-conveying parts of the gun thoroughly with thinner.
b) Clean the air nozzle with a paint brush or brush. Do not immerse the nozzle in thinner.
c) Under no circumstances try to clean clogged orifices using an unsuitable tool, since the slightest amount of damage to the
orifices will affect paint atomization or spray patterns.
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AIR NOZZLE W/BRASS CAP
FLUID NOZZLE
AIR DIVERSION RING
PISTON PAD
SCREW
SEAL FOR AIR PISTON
COMPRESSION SPRING FOR NEEDLE SEAL
WASHER
GUN BODY
FLUID CONTROL KNOB
SPRING FOR AIR PISTON
SCREW NUT
FLUID CONTROL KNOB
STUFFING BOX FOR AIR PISTON
GASKET
AIR PISTON ASSEMBLY
PISTON RING
AIR PISTON ASSEMBLY
SPRING FOR AIR PISTON
SPINDLE ASSEMBLY
CONTROL KNOB
COUNTER SCREW
AIR ADJUST VALVE ASS'Y
AIR CONNECTION PIECE R1/4"
TRIGGER BOLT
LOCKING PLATE
BOLT
TRIGGER SLEEVE
TRIGGER
PAINT CONNECTION
FILTER NET
PAINT CUP SET
SPANNER
CLEANING BRUSH
HEX SOCKET SCREW KEY
NO. DESCRIPTION QTY
35
PART LIST
Large Gun

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1. Putting into operation
Before putting into operation, and especially after any repair work, check to see that all nuts and bolts are tight.
Always disconnect the unit from the air supply before carrying out any repair work.
a) Mount the nozzle set tightly Align the air nozzle so that the number stamped into ii can be read from the front the right way round.
b) Blow out the air hose before attaching it to the air connection (114"). (Air hose pressure-resistant up to min. 10 bar and
solvent-resistant Total electric resistance: less than 100 million Ohm;)
c) The paint spray gun has been treated with an anticorrosive agent before leaving the factory and must therefore be flushed out
thoroughly with thinner before use.
2. Adjusting the volume of air using the compressed-air micrometer
The air supply can be regulated lo suit all operational conditions. Micrometer in vertical position (parallel to
gun body) maximum atomization. Micrometer in horizontai position (across gun body) minimum atomization (for blending, etc.)
During operation, never remove hollow screw by using the small hollow key in order to remove the micrometer
3. Reduction of the material volume
The volume of material flowing from the nozzle and thus the needle stroke can be reduced steplessly by screwing in the
material-volume regulation screw
4. Changing the nozzle set
Always change the complete nozzle set whenever changing nozzle size. These components that consist of air cap, fluid nozzle
and paint needle, are supplied as a complete set. Insert paint nozzle before paint needle.
5. Exchanging the air piston and air piston packing
To replace the air piston, remove the hollow screw and detach the air micrometer. Pull out spring and air piston. Exchange the air
piston. Unscrew stuffing box screw and remove the old packing. Insert new packing with flat end first, and gently tighten stuffing
box screw towards packing.
6. Cleaning and maintenance
a) Flush the material-conveying parts of the gun thoroughly with thinner.
b) Clean the air nozzle with a paint brush or brush. Do not immerse the nozzle in thinner.
c) Under no circumstances try to clean clogged orifices using an unsuitable tool, since the slightest amount of damage adversely
affects the spray pattern.
7. Internal nozzle pressure
At an entrance pressure of 43 psi and more al the air inlet, the internal nozzle pressure exceeds 10 psi. The maximum is stamped
onto the gun body
PART LIST
Detail Gun

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When using solvents and cleaning agents based on halogenated hydrocarbons e.g. 1.1.1-trichlorethylene and methylene
chloride, chemical reactions can occur on the aluminium cup, gun and on galvanized components (small quantities of water
added to 1.1.1-trichlorethyelen produce hydrochloric acid). This can cause oxidation of the components: in extreme cases, the
reaction can be explosive. Therefore only use solvents and cleaning agents for your paint gun which do not contain the
substances named above. Never use acid for cleaning purposes.
Never point paint guns at yourself, at other persons or animals. Solvents and diluting agents can cause burns. Before any
repair work may be carried out, the unit must be disconnected from the compressed air network and pressure must be
released. Before starting to use the paint gun, Particularly after repairs, ensure that screws and nuts are correctly tightened,
and check that gun and hoses do not leak. Defect components must be replaced or repaired, use original spare parts only. No
sources of ignition (e.g. open flames, burning cigarettes, lamps without ex-protection etc.) may be present during painting, as
easily flammable mixtures are generated during the painting process. Occupational safety regulations must be applied when
painting (respirator protection etc.). Appropriate ear protection muffs are required, as a sound level of 90dB(A) can be
exceeded when painting under higher pressure levels.
PLEASE READ BEFORE USE
CAUTION!
WARNGING!
Possible failures in operation
Trouble Cause Repair
1.Gun leaks from fluid tip 1.Foreign substances between fluid tip and
needle prevent sealing
1.Clean fluid needle and fluid nozzle in thin-
ner or use new set nozzle
2. Paint merges from fluid needle - needle
sealing
2. Self tensioning needle sealing damaged
or lost
2. Replace needle sealing
3.Spray pattern in sickle
shape
3.Horn air holes or air circuit clogged 3.Soak in thinner, afterwards clean with
the nozzle - cleaning needle.
4. Drop like or oval shaped
pattern 4. Dirt on fluid pin tip or air outlet 4. Turn air nozzle by 180 degrees.
lf defective pattern remains, clean
fluid tip pin and air circuit.
5. Paint Spray flutters 5. Too little material in cup, fluid nozzle not
tight self-adjusting, needle sealing damaged,
nozzle set dirty or damaged.
5. Refill material, tighten parts, if
necessary clean or replace parts.
6.Material bubbles or boils in paint cup
6.Atomization air flows through the paint channel
to the cup. The paint nozzle is not sufficiently
tightened. Air nozzle is not completely screwed
on, the air nut clogged and the seat is defective
or nozzle insert is damaged.
6.Tighten parts accordingly, clean or
replace.