Grounding; Troubleshooting - Graco 232903A Manual

WARNING
Improper installation or alteration of grounding plug
results in risk of electric shock, fire or explosion
that could cause serious injury or death.
1. 220–240 Vac models require a 50 Hz, 10A circuit
with a grounding receptacle. 100–120 Vac models
require a 50/60 Hz, 15A circuit with a grounding
receptacle. See Fig. 1.
2. Do not alter ground prong or use adapter.
Relieve pressure; page 6.
MOTOR WON'T OPERATE
TYPE OF PROBLEM
Basic Fluid Pressure
Problems
Basic Mechanical
Problems
Basic Electrical Problems

Grounding

Troubleshooting

WHAT TO CHECK
If check is OK, go to next check
1. Pressure control knob setting. Motor will not run
if at minimum setting (fully counterclockwise).
2. Spray tip or fluid filter may be clogged.
1. Pump (13) for frozen or hardened paint.
2. Displacement pump connecting rod pin (9a).
Pin must be completely pushed into connecting
rod (9) and retaining spring (9b) must be firmly
in groove of pump pin. See Fig. 11.
3. Motor (1). Remove drive housing assembly
(10). See page 21. Try to rotate fan by hand.
1. Motor control board. Board shuts down and dis-
plays error code.
2. Electrical supply. Meter must read:
210–255 Vac for 220–240 Vac models.
85–130 Vac for 100–120 Vac models.
3. Extension cord. Check extension cord continu-
ity with volt meter.
4. Sprayer power supply cord (79). Inspect for
damage such as broken insulation or wires.
Grounding Plug
240 Vac model shown
Fig. 1
3. 120 Vac: A 12 AWG, 3 wires with grounding prong,
300 ft (90 m) extension cord may be used.
220–240 Vac: You may use a 3-wire, 1.0 mm (12
AWG) (minimum) extension cord up to 90 m long.
Long lengths reduce sprayer performance.
WHAT TO DO
When check is not OK refer to this column
1. Slowly increase pressure setting to see if mo-
tor starts.
2. Relieve pressure and clear clog or clean fil-
ter; refer to separate gun or tip instruction
manual.
1. Thaw sprayer if water or water-based paint
has frozen in sprayer. Place sprayer in warm
area to thaw. Do not start sprayer until
thawed completely. If paint hardened (dried)
in sprayer, replace pump packings. See
page 23 (Displacement Pump Replace-
ment).
2. Push pin into place and secure with spring re-
tainer.
3. Replace motor (1) if fan won't turn. See page
22.
1. See Motor Control Board Diagnostics,
page 18.
2. Reset building circuit breaker; replace build-
ing fuse. Try another outlet.
3. Replace extension cord.
4. Replace power supply cord.
Grounded
Outlets
7
309063