Troubleshooting
Pressure Relief Procedure
To
reduce the risk
of
serious bodily injury, including fluid in-
4.
Disengagethegunsafetylatch.Holdametalpartofthe
jection, splashing fluid or sohrent in the eyes or on
the
skin,
gunfirmlylolhesideofagroundedmetalpail,andtrig-
ger the gun to relieve pressure.
this procedure whenever you shut
off
the sprayer, when
or injury
from
moving parts or electric shock, always follow 5. Engage the gun safety latch.
stalling, cleaningor changing spray tips, and whenever you
tocatchthedrainage.Leavethevalveopenuntilyouare
stop spraying.
ready to spray again.
If you suspect that the spray
tip
of
hose
is
completely
1.
Engage the gun safety latch. clogged,
orthatpressurehasnotbeenhdlyrelievedafterfol-
2.
Turn
the ONlOFF switch to
OW.
lowing the
steps
above,
VERY
SLOWLY
loosen
the
tip
guard
3. Unplug the power supply cord.
retaining nut or hose coupling to relieve pressure gradually,
then loosen completely. Now clear the tip or hose.
checking
or
my part ofthe
spray
system,
when
in-
6.
Openthe pressuredrainvalve, havingacontainerready
Mi33
Perform
all
Troubleshooting
procedures before disassembling
the
sprayer.
MOTOR
WON'T OPERATE
TYPE
OF
PROBLEM
Basic Fluid Pressure Problems
T
Basic Mechanical Problems
t
Basic Electrical Problems
WHATTO CHECK WHAT TO DO
If check is
OK,
go
to
next
check
When check
Is
not
OK
refer
to
this column
1.
Check the pressure control knob setting. The
1.
Slowly increasethe pressure setting to
see
motor will not run
if
it is atthe minimum setting
if
the motor starts.
(fully counterclockwise).
2.
Checkforacloggedspraytiporfluidfilter.Re-
2.
Relievepressure,refertotheseparategun,
fertotheseparategun,tip,orfluidfilter
instruc-
tip,orfluidfilterinstructionmanualforclean-
tion manual.
ing.
1.
Check for frozen or hardened paint in the' 1. Thaw. Plug in sprayer and
turn
on. Slowly
pump(76)and/orpressurecontroItube.Using
increase pressure setting to
see
if
motol
ascrewdriver, carefullytryto rotate fan atback starts.
If
it doesn't,
see
NOTE 1, below.
of motor by hand.
See
page 17.
2. Check displacement pump connecting rod
2.
Push pin into place and secure with spring
pin
(43).
It must
be
completely pushed into retainer.
connecting rod @),and retaining spring (42)
must be firmly in groove of connecting rod.
See
Fig. 32.
fan by hand.
ing assembly
(67).
See
page 25. Try to rotate page 27.
~~ ~
3.
Checkformotordamage.Removedrivehous-
3.
Replace motor (73)
if.
fan won't turn,
See
1.
Check pressure control safety circuit.
2.
Turn pressure control ONIOFF switch to
continuestotriD,seeELECTRlCALSHORT
OFFtoRESETIfthepressurecontrolsafety
I
I
on
page
16.
I
2.
Check electrical supply with volt meter. Meter
2.
Reset building circuit breaker; replace
should read
200-250
VAC.
I
building
fuse.
Try
another outlet.
I
I
-
3.
Check extension cord fordamage. Check
ex-
3.
Replace extension cord.
tension cord continuity with a volt meter.
NOTEl:Thawthesprayerifwaterorwater-basedpainthasfrozeninit,duetoexposuretolowtemperatures,byplacingitinaw~m
pressure control
must
be replaced. See page 29 (Dlsplacernent Pump)
or
22
(Pressure Control).
area.
Do
not try to
starf
the sprayer until
it
has thawed completely.
If
paint hardened (dried)
in
the sprayer, the pump packings and/or
12
308-560
1.
Check sprayer power supply cord (314) for 4 Replace power supply cord. See page
20.
damage such as broken insulation or wires.
I
'
I
I
5.
Checkmotorbrushleads,terminalsandbrush
5.
Tighten terminal screws: replace brushes.
length. Brush length should be 112"
(12
mm)
See
Daae
19.
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