Graco ULTRA AIRLESS 230-963 User Manual
Page 10
TROUBLESHOOTING GUIDE
WARNING
To reduce the risk of serious
Pressure Relief Procedure
6. Engage the gun safety latch.
fluid injection, splashing fluid in
eyes
7.
Ooen the drain valve. havina a container readv
or on the skin, or injury from moving parts or elec-
to
catch the drainage.
tric shock, always follow this procedure whenever
you shut off the sprayer, when checkingor
8. Leave the drain valve open until you are ready
ing
any part of the spray system, when Installing,
to spray again.
you stop spraying.
cleaning or changing spray tips, and whenever
pletely clogged, or thatpressure has not been fully
you suspect that the spray
tip
or hose
is
1. Engage the gun safety latch.
relieved after following the steps above, VERY
2.
Turn
the
switch to
OFF.
SLOWLY loosen the tip guard retaining nut or
hose end
and relieve
I
3.
Unplug
the
power supply cord.
then loosen
Nowciearthe tip or
4. Disengage the gun safety latch.
5.
Hold a metal part of the gun firmly to the side of
a grounded metal pail,
the gun to
relieve pressure.
TYPE
OF
PROBLEM
MOTOR
WONT
OPERATE
Basic Fluid Pressure Problems
Basic Mechanical Problems
Basic Electrical Problems
WHAT TO CHECK
If
check is
OK,
go
to next check
1.
Check the pressure control knob sening.
The motor
will
not run if
it
is at the
minimum sening (fully
counterclockwise).
2.
Check for
a
clogged spray tip. Refer
to
your separate gun or tip instruction
manual.
it,
due
to
exposure to low temperatures, by placing
it
in
a
'Thaw the sprayer if water or water-based paint has frozen in
warm area.
Do
not try to start the sprayer until
it
has
completely. If the bourdon tube was not damaged by the
freezing, the pump should operate. If paint hardened
in
the sprayer. the pump packings
bare pressure control
mum be replaced. See page
or manual
1.
Check for frozen or hardened paint
in
the pump
andlor pressure control
bourdon tube. Using
a
screwdriver,
carefully try to rotate fan
at
back of
motor.
2.
Check displacement pump connecting
rod pin
It
must be completely
pushed into connecting rod and
spring retainer
should be firmly in
groove of connecting rod. See page
3.
Check for motor damage. Remove drive
to
rotate fan bv hand.
housing assembly
See page
Try
1.
Check electrical supply with volt meter.
Meter should read
Volts.
2.
Check extension cord for visible
damage. Use
a
volt
or
test
lamp
extension cord outlet
to
check.
3. Check sprayer power supply cord
for visible damage such
as
broken in-
sulation or wires.
4.
Check motor brush leads, terminals and
brush length. Brush length should be
14
minimum. See
DO
If
check is
NOT
OK
refer to this column
1. Slowly increase the pressure setting to
see
if
the motor starts.
2.
Relieve pressure, refer
to
your separate
gun or tip instruction manual for tip
cleaning.
1.
Thaw'.
Plug in sprayer
and
turn
on.
Slowly increase pressure setting
to
see
if
motor starts. If
it
doesn't, replace the
displacement pump packings
(see
manual
307-793)
andlor replace the bare
23.
pressure control box
See page
2.
Push pin into place and secure with the
spring retainer.
3.
Replace motor
1
fan won't turn.
1.
Reset building circuit breaker; replace
building fuse. Try another electrical
outlet.
2.
Replace extension cord.
3. Replace power supply cord.
See page
4.
lighten terminal screws; replace
brushes. See page
27.
'When replacing the bare pressure control box (item
trical hardware and reinstall these parts in the bare box.
remove the ONlOFF switch, bridge, circuit board and elec-
Troubleshooting continued on next page.