Type
of
Problem
:ondlUon B
(continued)
loth lamps
off
IEFER
TO
THE
WIRING
DIA.
:RAM
ON
PAGE
12
'0
IDENTIFY
TP
POINTS.
:ondltlon
C
led lamps on,
Xear lamp
off
Jnplug sprayer!
I
What
to
Check
If
check
is
OK,
go
to the
next
check
1.
Checkelectricalsuppl Connectvoltmetel
to electrical outlet. iieter should reac
2.
Check power supply
to
circuit board witt
spra erturnedON. MeasurevoltageatTPl
andtb2.Metershouldread190-250Volts.
190-250
Volts.
3.
Checkallterminalsandwiresfordamageol
loose
ft.
4.
Checkmotorthermalcutoutswitch.Unplug
motor thermal switch leads at TP9
ana
sprayer. Allow motor
to
cool. Diconnec!
TP10. Use ohmmeter
to
check continuity.
Switch should be closed when motor
IS
5. Check microswitch (306). Wah no fluid
cool.
pressure
in
the pressure control, discon.
nectwiresTP16andTP19,Checkcontinuity
across switch terminals with an ohmmeter.
Switch contact should be closed. Depress
actuatorbutlon.Anaudible'click"indicates
the contacts have opened. Ohmmeter
should read iniinitv.
~ ~
~.
..~~
6.
Checkcircuiboar~(72)bysubstitutingwitt
a good board.
1.
Check circuit board
(72)
by removing
from
boxwithoutdisconnectmg wires; seepage
24
for removal procedure.
should be on now
-
removing the circuil
Plug in and turn
on
sprayer. Clear lamp
and unplug the sprayer.
boardoverridestheopticaldetector.Tumofi
-
"
rl
I
I2
'3
14
t
I
15
16
-_
I1
-
~~ ~~ ~ ~
What
to
Do
If
check
is
not
OK,
refer to this column
.
Resetcircuitbreakerorreplaceoutletfuse.1
circult breaker or fuse continues
to
open
see "Electrical Short", page 18.
I.
Unplug
s
rayer Check continuity
of
bot)
oles of
8NIOFF
switch (302)
from
TP3
t(
~P4andTP6toTPG.Replaceswitchiffaulty
See page
20.
to
TPB and TP9
to
TP10. Replace filter
i
CheckcontinuityofRFIfitter(310)fromTPi
bully.
See page
22.
Checkpowersu plycord 3ll)forcontinu
pace
v
cord
if
faulty.
See page 20.
frOmTP11tOfPl2and'/P13toTP14.Re
Check for any loose connections.
,.
Replacedamagedterminalsandreconnec
securely.
.
Replace electric motor
if
switch does no'
dose
when motor is cool.
See
page
30.
.
Replace the microswitch. See page
23.
.
Replace circuit board. See page 24.
.
Replace circuit board. See page
24.
WARNING:
Removing the circuit board while still wired overrides the
optical detector which could cause the sprayer to over-pressurize, if the
microswitch does not function properly. Turn the sprayer on
ONLY
long
enough
to
check lamp condition. then shut
off
immediately.
WARNING
To reduce the risk
of
electric shock, handle board by edges
only1 Do not allow any metal objects
to
come
in
contact with the boardl
307-889
13
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