DeVilbiss SGA-570 User manual

DEVIlBISS
RAMSBURG
INDUSTRIAL COATING EQUIPIIIIEIU'
3
2 I
~~~
~~--,
Torque of " I
15~_1_7 F1--L~~
23
re-.,- ~~~=-=-';;~QfiJJJit~~
REF. DeV. DESCRIPTION
1 BSGB-26
Air cap !etaj~in_g n.nf!
2
BSGA-3
~~cap
3 BSGA-32
Fluid tip
r
20-®
21-1
-------- ----
4
BSGB-5-K5 Baffle
5
BSS-601011-K10
"(J" ~in9 !three)
6 BSGA-412
Valve asse~bly_
7 BSS-6011 09-K5
"0" ~-i~g
8 BSGA-48 Air Valve
------
9 BSGA-49-KS
Sprin_Q_
0
BSGA-404
FlUid needle
11
CGA-40-KS Spring
12 BSGB-16-K3 Retaining nut
--
13 BSGB-14
Fluid_!l_~ed!e a_?lu~~~g- ~nob
Suffixes- K3. KS. K10 des1gnate ~.its of rnultiple parts
Example BSGB 5-Ks. K5 1s a K1t of (5) battles
Servrce Bulletin
SB-2495 C
SGA Spray Gun
I
I
.rt<
I
1-®
I I
I I
15 I
14
REF. DeV. DESCRIPTION
14 BSGB-15-KS Packmg
15 BSGB-13-K3
Packi~_g nut
16 SST-8416-KiO
Reta~n~ng ri_~g (tw_{)!
17
BSGA·16-K5 !rigger bearing stud
18
BSGA-27
_ "_rrigQer
-
19
PTGA-29
N_ipp_le
20 BSGA-37 Lock nut
21 BSGA-40
Fluid adapter
22
BSGA·410
~~n_ Body
Acesseries
23
42884-214"K5 Cleaning
bru_s0_ E-~~- _Dia)
42884-215-KlO
C:!~aning brush J518 Dia.)
24
BSGA-29 Wrench

Important Note
·The SGA570 spny ~JUn rs a precisron tool, desrgned and manufactured to render
high qualrty trr.istl€<>
·In order to marntarn rts pertormance characterrsrrcs it rs important that you carefully
follow the mstructrons here:n
Application
WARNING'
CHLORINATED SOLVENTES SUCH AS 111-TRJCHLOROETHANE AND
METHYLENE IN THIS CHEMICALLY REACT WITH THE ALUMINUM USED IN
THIS GUN. THE RESULT OF THIS REACTION CAN RANGE FROM
DESTRUCTIVE CORROSION TO A HAZARDOUS EXPLOSION. 00 NOT USE
THESE SOLVENTS WITH THIS SPRAY GUN.
•The SGA spray gun was developed fo~ use in automobile reparr sr-.ops and general
maintenance work
·It rs adequate fm applyrng all common coating and frnishing materials, excepting
ccmosrve. abrasive products anzi those With very high viscosity.
How it Works
• The SGA-570 DeVilbiSS spray gun works through suction it draws the material
from the cup through a suction tube
• The pattern 1s adjusted by the top knob
• Flwd flow IS adjusted by the lower one
Installation
For better performance of the
DeVilbiss SGA-570 we
recommend that
• The DeVilbiss air filter regulator
be installed as close as possible to
the
spray gun
• The mternal diameter of the
DeVi/t)iss air hose should not be
less than 5116", for a maximum
length of 50 feet (15 meters)
Operation
fhe air valve assembly (6) is under pressure whenever the gun ts tnggered. If this
valve
is turned out too far, it may !eave the gun forcefully when rhe gun is triggered
Also, the "0" ring (5) may be dammaged rf the valve is turned out past the first
thread [)o not turn the valve past the first thread -there will be no effect on the spray
pattern
after that positton.
• Prepare the mate nat wt>ich is to be sprayed according to the manufacturer's
n:structions and filter it ttlrough a sueeen of at least 60 mesh, or equivalent.
• Set the atr pressure at the DeVilbiss filter regulator to about 35 p.s.i. to start.
• Effect a spray test
• Spray a test pattern. Regulate the fan by opemng or closing its adjusting knob
• Spray a small area in order to achieve the desired job speed and finish.
• If the ftnish appears to be dry or rough, the quanttty of material is small in relation to
the air
pressure Open the fluid regulating knob, or decrease the air presure in the
DeVilbiss filter regulator until you achieve a wet and full coattng.
•
Keep the spray gun always perpendicular to the surface which is to be painted
·Do not arc the gun as thts produces an uneven coat of paint
·We recommend the spray gun be kept at a distance of 6 to 8 inches from the
''urface
• The positton of the air cap determines the position of the pattern Twist the cap
;Jccording to spraying requenments
Cleaning
We recommend that the spray gun be cleaned daily, or after each time the equipment
is used
Procedure
• Remove the cup Empty the remaining matenal from the cup and refill it with about
c:ne inch of suitable solvent.
•
Put cup back on gun and shake same
• Pull the trigger for a while
• loosen the cup again and clean 1! Inside w1th a cloth using the remaining solvent.
Clean also the lid and suction tube
• Repeat the flushing procedure at least once aga1n.
•
W1pe the extenor of the gun with a solvent dampened cloth
• If necessary , remove tne air cap and clean 1t by 1mmers1ng same in solvent If the
holes have clogged use a toothpick to remove the obstruction_ Never use wires or
nails, as this could ruin the air cap
• Never immerse the spray gun m solvent since this destroys the lubricants and
packmgs
Lubrication
·Lubricate .daily w1th thin oil the tngger bear1ng stud (17), the fluid needle (10), close
to the packtng (14), the threads of the valve assembly (6) and the exposed part of the
wr valve (8)
• Periodically cover the springs of the needle (1 1) and of the air valve (9) with
vaseline or thm grease
When to change the tip and needle
The tip and netedle should he replau::d when
·There occurs wea1 of the 11p, ol the needle or th'~ sent d the t!p
• There are
SIQrls of wear on the needle at the pornt of contact W!th 1t1e packmg
• NE'·ver replace on!y th(' fluid tip (3) or the need!e (10) Al>w1ys chanQe both of t~em
·The t1p should be screwed on carefully 1n order not to hurt tile (hre:vJ of the gun
body. Thtghten 1! tor a good sealing. but never over-ltghten it Always use ttle
DeV1Ibiss
BSGA-29 wrench Always ttghten the fluid ttp before assernlJhng the
neediH rnto the gun body
• The t:p should be screwed on carefully 1rl order not to hurt the thread of th•: gun
body Tighten 1\ lor a good sealmg. but new:r ove~-trghlH\ rt Always t/>e tr;e
DeVilbiss
BSGA-29 wrench_ Always t1ghtr::m the Hu:d tip with a torque of 15 to 17
Ft Lbs. before assembling the needle into the gun body
• Always replace the packrng (14) whHl you assernbie a new set of t1p and needle
Lubrtcate the new p8.cking oefore asse-mbly
·The packing nut (15) should be just t1ght enough and not hmder the free movement
of the needle
REPAIR KITS
K-5001 K-5004
~- ··r
QTY : DeV.
DESCRIP_!"!_?.N.
QTY. DeV. DESCRIPTION
' ~-~~-~
j
BSGA-32 F!Uid tip
j
BSGB-15 Packtng
j I
BSGA-404
Fluid needle
3 BSS-601011
"0" Ring
2
'BSGS-15 Packmg BSS-601109 "O" R1ng
BSGB·5 Baffle 1 BSGA-49 Sprmg
I j
CGA-40 Spring
i j
BSGA-16 Tngger pin
2 SST-8416 Snap nng
HOW TO REQUEST REPLACEMENT PARTS
When requestmg replacement parts always g1ve the ·1. Kit or Part Code-2
Description of same -3 Type ol spray gun
SERVICE CHECKS
'
'
) (
•
:
Condition
Top/or
bottom
heavy
pattern
Heavy right
or left s1de
pattern
Heavy
center
pattern
Spilt spray
pattern.
Jerky or
fluttering
spray
Cause
1 Matenal build up on
atr cap
2 Partially
plugged horn
holes, center hole or
jets
'3.
Matenal partially
i
plugged flwd tip
!4
Dammaged fluid tip.
1. Too much material
2 Material
too thick
I'
Pressure is too high
2.
Not enough material
1 InsuffiCient flwd in cup.
2
Gun and cup tipped
at excessive angle
3 OtstniCted
fluid passage
4 loose or cracked
fluid tube in cup
i 5. loose fluid tip or
I cracked fluid tip
seat
6. Too heavy fluid for
suction feed
i 7. Dry or worn packing
I (14)
or loose packing
nut (15)
________ i
Will not
spray
1
1
Low air pressure
1
at gun
l2 Closed fluid adjusting
! knob
1
3 Too .heavy fluid tor
suctton feed
, 4 loose a1r cap
I
Correction
--r-
'1.
Remove cap and soak it
in suitable sotvent and wipe
clean (See Cleaning)
2
Same as above
3.
Remove ffuid tip and
clean same with soivent.
4. Replace t1p and needle
set (See When toChan_;je
~~.Pard Need~)
1
Reduce flUid flow by
turning needle adjusting
knob clockwise or increase
air pressure in th'2
DeVilbls.s filter regulator.
2
Thin matenal
1.
Reduce a11 pressure
of the DeVilb1ss filter
regulator.
2.
Ir.crease fluid flow by
turning fluid needle
adjusting knob
counterclockwise
1 F1ll cup
2 Do not tip excessively
or rotate fluid tubE:> in cup.
3. Clean same
4 Tighten or rep!ace
same
5 T1ghten or replace the
lip and needle set
6 Thtn matenal
7. lubncate or replace
packing or tighten
packing nut
Ched< air lines or 1mease
pressure at OeVrlbiss air
filter regulator.
2. Open same .. (See
Operal!On)
j 3 Thin material
4 Tighten same
Dripping
from
_____ ft~,uid tip.
--[1.- Worn or damaged -;rp
_i~~. need I~- ---·- .... - ..
Replace ttp and needle
set (See When to
C~an_g_e Tip an_d_ Needle)-~
~ DEVILBISS
~ RAMSBURG
DeVilbiss Ransburg Industrial Coating Equipment
17241ndian Wood Circle
INDUSTRIAL COATING EQUIPMENT Mawmee, OH 43537
SB2A95C
06/91