LOW
OUTPUT
WPE
OF
PROBLEM
.ow
output
WHATTO
CHECK
WHAT TO
DO
If
check
is
OK,
go
to
next
check
When check
is
not
OK
refer
to
?his
column
1.
Check for worn spray
tip.
1.
Follow Pressure
Rellef
Procedure Wern-
ing
then replacetip. See yourseparategun
I
or
tip
manual.
2. Check to see that pump does not continue
to
stroke when gun trigger is released. Plug
in
and turn on sprayer. Prime with paint. Trigger
safety latch. Relieve pressure, turn
off
and un-
gun momentarily, then release and engage
plug sprayer.
3.
Check electrical supply with
volt
meter. Meter
should read 200-250 VAC.
4.
Check extension cord size and length; must
be at least
1.5
mm2 (12 AWG) wire and no
longer than 100m (300
rt).
5.
Check
+,
-,
M+ and M- leadsfrom motorto
pressure control circuit board (61) for dam-
agedorloosewiresorconnectors.Inspectwir-
lng insulation and terminals for signs
of
over-
heating. See page 27.
2. Service pump. See pages 29-33.
3.
Reset building circuit breaker; replace
another outlet.
building fuse. Repair electrical outlet or
try
4.
Replacewithacorrect,groundedextension
cord.
5.
Be sure male terminal blades are centered
and firmly connected
to
female terminals.
wiring. Securely reconnect terminals.
Replace any loose terminal or damaged
6.
Checkfor loose motor brush leads and termi- 6
TigMenterminalscrews.Replacebrushesif
nals. See page 19.
I
'
leads are damaged. See page19.
I
7. Check for
worn
motor brushes which should
be 12 mm (1/2 in.) minimum. See page 19.
~~ ~~ ~~
7. Replace brushes. See page 19.
6.
Checkforbrokenandmisalignedmotorbrush
6.
Replace spring if broken. Realign spring
springs. Rolled portion of spring must rest
with brush. See page 19.
squarely on top of brush.
I
I
9.
Check motor brushes for binding in brush 9. Clean brush holders, remove carbon dust
holders. See page 19. with small cleaning brush. Align brush lead
with slot
in
brush
holdertoassurefreeverti-
cal
brush
movement.
10.Checkstall pressure. Gaugeshould read 170' 10 Replace with new pressure control board
bar (2500 psi) minimum.
I
'(301). See page 22.
I
11 .Checkpressurecontrol board (301) bysubsti-
11 .Replace with new pressure control board
tutingwithagoodpressurecontrolboard.See
page 22.
(301). See page 22.
12.Checkmotorarmatureforshort.s
by usingan 12.Replace motor. See pie
27.
armature tester (growler) or perform spin test.
I
1
See page 17.
..
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