Low
output
Type
of
Problem
,ow output
What to Check
If
check
is
OK,
go
to the newt check
1.
Check for worn spray
tip.
2.
Check
to
see that pump does not continue
tostrokewhenguntriggerisreleased.Plug
Trigger gun momentaril then release and
in and turn on sprayer. Prime with paint.
engagesafetylatch. Rekvepressure, turn
off
and unplug sprayer.
3.
Checkelectrical supplywithvolt meter. Me-
ter should read 190-250
Volts.
4.
Checkextensioncordsizeand1ength:must
than
45
m.
be at least 1.5 mm dia. wire and no longer
5.
CheckGlandG2leadsfrombridge(308)to
circuit board (72 fordamageorloosewires
or connectors.
A
efer
to
page 24.
6.
Check
stall
pressure. Refer to Pressure
7.
Check bridge
(338)
+
and
-
leads and ter-
Control Adjustment on page 26.
minals to motor. Inspect wiring insulation
and terminalsfor signs of overheating. See
page 21.
'
E.
Check for loose motor brush, leads and ter-
minals. See page 32.
9.
Check for worn motor brushes which
should be 10 mm minimum. See page 32.
10.
Check for broken and misali ned motor
brushsprin
s
Rolledportionokpringmust
rest sauarei: on
toD
of
brush.
11.
Checkmotor brushes for binding in brush
holders. See page 32.
12. Checkcircuitboard(72 bysubstitutingwith
a good circuit board.
B
ee page 24.
13. Check motor armature for shorts by using
anarmaturetester(grow1er)orperformspin
test. See page 17.
14.
Check bridge (308) by substituting with a
test. See page 18 or 21.
good bridge or by performing the bridge
Do
not perform this check until armature is
CAUTION
determined
to
be good. A bad armature will
immediately bum out a good bridge.
What to
Do
If
check is not
OK,
mfer
to
this column
1.
Follow
Pressure
Rellef
Procedure
Warn-
1ngthenreplacetip.Seeyourseparategun
or tip manual.
2. Service pump. See page 33.
3. Reset buildin circuit breaker; replace
building fuse. Wepair electrical outlet or
try
4.
Replacewithacorrect,groundedextension
another outlet.
cord.
5.
Cleancircuitboardmaleterminals.Replace
loose or defective lead terminals. Securely
reconnect lead terminals
to
board.
8.
Adjust pressure control. See page 26.
7.
Be
sure male terminal blades are centered
and firmly connected
to
female terminals.
Replace any loose terminal or dama ed
wiring.
Securelyreconnectwiresto
brilge.
8.
l7ghtenterminalscrews.Replacebrushesif
9.
Replace brushes. See page 32.
leads are damaged. See page 32.
10. Re lace spring
if
broken. Realign spring
wit{ brush. See page 32.
11.
Clean brush holders, remove carbon dust
with smallcleaning brush.Align brush lead
with
slot
in
brush holdertoassure freeverti-
cal brush movement.
12. Replace circuit board. See page 24.
13. Replace motor. See page
30.
14. Replace bridge. See page 21.
14
~307-009
To Next Page
Loading...
