Table of Contents
Advertisement
I
TROlJBlESHOOTII~G
- SPRAY PATTERNS
Norma! Spray Pattern:
I
Proper gun adjustment will result in a
normal spray pattern of this shape.
Condition
Cause
A. Heavy top or
'
•
1. Paint buildup on air cap holes and/or
bottom pattern
obstructions in spray head holes.
B. Heavy right or
(
1, Paint buildup on air cap holes and
left side pattern )
.
obstructions in sprav head holes,
C. Heavy center
t
1. Toolowhorn(fan)air.
pattern
2. Toomuchpaintflow.
3. Painttoothick.
D. Split spray
I
1. Toomuchhorn{fan) air.
pattern
I
E. Jerky or fluttering spray
1. Loose air cap.
2. Air in disposable liner.
SB-2-230-E Page
i
3
These pages cover the most common problems. No manual can possibly
cover all problems, so for special situation, call DeVilbiss Customer
Customer Service at1-800-445·3988 (U.S. and Canada only). Refer to
the appropriate operation and/or disassembly/assembly section(s)
for more information.
Correction
1. Clean per instructions on Page 11,
Step12.
1. Invert air cap and test spray. If pattern
Doesn't change, problem is spray head. If
pattern changes, problem is air cap. Clean per
instructions on Page 11, Step 12.
I
1. Adjust pattern size.
2. Adjust fluid control knob and/or reduce
air inlet pressure.
3. Thin paint.
1. Adjust pattern size.
1.
Tighten air cap ring.
2. Purge air per instructions on Pg. 8, Step 5.
3. Low paint level in cup when liner is not used.
3, Add paint.
4. Cup lid vent blocked.
4. Clean vent.
F.
No round spray
1.
Spray head loose.
1, Tighten spray head retaining ring.
2.
Baffle gasket damaged.
2.
Replace gasket.
3.
Fan air control not adjusted or not
3.
Adjust or replace,
working properly.
G. Will not spray
1'.
low air pressure at gun inlet,
1.
Check air supply and air adjusting
valve. See Page 6.
.:(.
Fluid control knob not open enough.
2 .
/\djust fluid control knob.
3.
Cup lid vent blocked
3. Clean vent.
4.
Paint filter clogged.
4.
Replace paint filter.
5.
Paint too thick.
5.
Thin paint.
H.
Poor spray pattern
1.
low air pressure at gun inlet.
1.
Check air supply and air adjusting
volive. See
Pg. 6.
Adjust pressure with gun fully triggered.
2.
Gun improperly adjusted.
2.
Readjust gun. See Page 6.
3.
Air leak.
3.
Repair air
leal~.
4.
Dirty air cap
or
Huid tip (nozzle).
4.
Clean air cap or fluid tip (nozzle).
5.
Spray head holes obstructed.
5.
Clean spray head.
6.
Baff!e gasket out of position or damaged.
6.
Replace or rer;)sition gasket.
7.
Air cap seal damaged,
I
7. Rep face seal.
-
.
TROUBlESHOOTING ·PAINT FlOW/AIR PROBLEMS
I.
Paint leaking from
1.
Needle packing and/or spring missing.
1.
Instal! properly, See Pg, 19, Steps 11
&
12.
spray head
2.
Spray head damaged.
2.
Replace.
Always
pull back needle when
removing and insta!Jing spray head.
3.
Fluid tube
U~cup
damaged.
3. Replace*.
4.
Spray head loose.
4, Tighten retaining ring.
" It is always a good idea to replace both
the packing and U-cup .
....
J.
Paint leakage trom
1.
Spray head damaged.
1.
Replacu. Always pull back needle when
spray head tip
removing and installing spray head.
2.
Dried paint inside tip.
2. Clean.
K.
Can't stop paint flow
1.
Needle cap loosened.
1. Tighten only unti! It touches rear plug.
L.
Rear gun air leak
1.
Needle cap loosened.
1, Tighten only until
it
touches rear plug.
2.
Rear plug damaged.
2. Replace.
..
··-
I
Advertisement
Table of Contents
