Grounding; Troubleshooting - Graco ultra max 795 Instruction 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. Models 232144, 145, 154 require a 230 VAC, 50
Hz, 10A circuit with a grounding receptacle. Mod-
els 232148, 158 require a 110 VAC, 50/60 Hz, 15A
circuit with a grounding receptacle. Models
232156, 157 require a 100 VAC, 50/60 Hz, 15A
circuit with a grounding receptacle. See Fig. 2.
2. Do not alter ground prong or use adapter.
Relieve pressure; page 3.
MOTOR WON'T OPERATE
TYPE OF PROBLEM
Basic Fluid Pressure
Problems
Basic Mechanical
Problems
Basic Electrical Problems
4
308842

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. For clogged spray tip or fluid filter. Refer to sepa-
rate gun, tip, or fluid filter instruction manual.
1. For frozen or hardened paint in pump (64). Use
a screwdriver and carefully rotate fan at back of
motor by hand. See page 9.
2. Displacement pump connecting rod pin (66).
Pin must be completely pushed into connecting
rod (63) and retaining spring (68) must be firmly
in groove of connecting rod. See Fig. 12.
3. For motor damage. Remove drive housing as-
sembly (67). See page 15. Try to rotate fan by
hand.
1. Pressure control safety circuit.
2. Electrical supply. Meter must read:
210–250 VAC for models 232144, 145, 154.
100–120 VAC for models 232148, 158.
90–110 VAC for models 232156, 157.
3. Extension cord for damage. Check extension
cord continuity with volt meter.
4. Sprayer power supply cord (79) for damage
such as broken insulation or wires.
Grounding Plug
Model 232144, 145, 154
Fig. 2
3. A 12 AWG, 3 wires with grounding prong, 300 ft
(90 m) extension cord may be used. 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, refer to separate gun, tip,
or fluid filter instruction manual for cleaning.
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 17 (Displacement Pump Repair).
2. Push pin into place and secure with spring re-
tainer.
3. Replace motor (73) if fan won't turn. See
page 16.
2. Turn pressure control ON/OFF switch to OFF
to RESET. If pressure control safety contin-
ues to trip, see ELECTRICAL SHORT on
page 8.
2. Reset building circuit breaker; replace build-
ing fuse. Try another outlet.
3. Replace extension cord.
4. Replace power supply cord.
Grounded
Outlets