Troubleshooting Guide; Motor Wont Operate - Graco ULTRA AIRLESS 230-963 Instructions And Parts List

TROUBLESHOOTING GUIDE

Pressure Relief Procedure
To reduce the risk of serious .bodilv injury. in-
cluding fluid injection, splashing fluid in i h e eyes
or on the skin, or injury from moving parts or elec-
tric shock, always follow this procedure whenever
you shut off the sprayer, when checkingor servic-
ing any part of the spray system, when Installing,
cleaning or changing spray tips, and whenever
you stop spraying.
1. Engage the gun safety latch.
2. Turn the ON/OFF switch to OFF.
3.
Unplug the power supply cord.
4. Disengage the gun safety latch.
5.
Hold a metal part of the gun firmly to the side of
a grounded metal pail, and3rigger the gun to
- relieve pressure.
-
TYPE OF PROBLEM
MOTOR OPERATE
WONT
Basic Fluid Pressure Problems
-
Basic Mechanical Problems
-
Basic Electrical Problems
i
'Thaw the sprayer if water or water-based paint has frozen in
due exposure to low temperatures, by placing
to
it,
warm area. not try to start the sprayer until
Do
completely. If the bourdon tube was not damaged by the
freezing, the pump should operate. If paint hardened (dried1 in
the sprayer. the pump packings and/or bare pressure control
mum be replaced. See page
WARNING
WHAT TO CHECK
check is
OK,
If go
Check the pressure control knob sening.
1.
The motor not run if
will
minimum sening (fully
counterclockwise).
2.
Check for clogged spray tip. Refer
a
your separate gun or tip instruction
manual.
Check for frozen or hardened paint
1.
the pump (19) andlor pressure control
bourdon tube. Using
carefully try to rotate fan
motor. page
See
15.
Check displacement pump connecting
2.
(m).
rod pin must be completely
It
pushed into connecting rod (91 and
spring retainer should be firmly in
(21)
groove of connecting rod. See page
1
3. Check for motor damage. Remove drive
housing assembly
(6).
rotate fan bv hand.
to
Check electrical supply with volt meter.
1.
Meter should read 190-250
Check extension cord for visible
2.
damage. Use volt meter or
a
m
extension cord outlet
3. Check sprayer power supply cord
for visible damage such
sulation or wires.
Check motor brush leads, terminals and
4.
brush length. Brush length should be
14 mm minimum. See
in
it
has thawed
it
or manual
23 307-793.
6 . Engage the gun safety latch.
7.
~~
Ooen the drain valve. havina a container readv
to
catch the drainage.
8. Leave the drain valve open until you are ready
to spray again.
If you suspect that the spray
pletely clogged, or thatpressure has not been fully
relieved after following the steps above, VERY
SLOWLY loosen the tip guard retaining nut or
hose end couolina and relieve oressure araduallv.
then loosen comphely. Nowciearthe tip or hosb:
WHAT.TO
to next check check is NOT
If
1. Slowly increase the pressure setting to
is at the
see if
it
2.
Relieve pressure, refer
to
gun or tip instruction manual for tip
cleaning.
Thaw'.
1.
in
Slowly increase pressure setting
screwdriver, motor starts. If
a
displacement pump packings
back of
at
manual
pressure control box (3011' . See page
23.
Push pin into place and secure with the
2.
spring retainer.
26.
3. Replace motor I1 1 if fan won't turn.
25.
See page Try
1. Reset building circuit breaker; replace
building fuse. Try another electrical
Volts.
outlet.
Replace extension cord.
2.
lamp
test
check.
to
3. Replace power supply cord.
(311)
broken in- See page 18.
as
4. lighten terminal screws; replace
brushes. See page
28.
DaQe
'When replacing the bare pressure control box (item
remove the ONlOFF switch, bridge, circuit board and elec-
a
trical hardware and reinstall these parts in the bare box.
Troubleshooting continued on next page.
I
or hose is com-
tip
I~~~~
DO
refer to this column
OK
the motor starts.
your separate
to
and on.
Plug in sprayer
turn
to
doesn't, replace the
it
(see
307-793)
andlor replace the bare
2 7 .
307-671
see
if
301).
9