Troubleshooting - Graco Pro 230ES Repair And Parts Manual

Troubleshooting

Type of Problem
Basic fluid pressure problems
Basic mechanical problems
Basic Electrical Problems
3A2817A
What to Check
(if check is OK, go to next)
Pressure control knob setting.
Motor will not run if at minimum set-
ting (fully counter-clockwise).
Spray tip or fluid filter may be
clogged.'
Pump frozen or paint hardened in
pump.
Displacement pump connecting rod
pin must be completely pushed into
connecting rod and retaining spring
must be firmly in groove of pump
pin. See page 17, Displacement
Pump Replacement.
Motor. Remove drive housing
assembly. See Drive Housing
Replacement, page 20.
Motor control board. Board shuts
down and displays error code.
Electric supply. Meter must read
85-130 VAC fro 120V models.
Extension cord. Check extension
cord continuity with volt meter.
Sprayer power supply cord. Inspect
for damage such as insulation or
wires.
Motor leads are securely fastened
and properly mated.
Troubleshooting
What to DO
(When check is not OK, refer to
this column
Slowly increase pressure to see if
motor starts.
Relieve pressure, page 9 and clear
clog, or clean filter; refer to separate
gun or tip instruction manual.
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 hard-
ened (dried) in sprayer, replace
pump packings. See page 17, Dis-
placement Pump Replacement.
Push pin into place and secure with
spring retainer.
Replace motor if fan won't turn. See
Fan Replacement, page 23.
See Motor Control Board diag-
nostics, page 30.
Reset building circuit breaker.
Replace building fuse. Try another
outlet.
Replace extension cord.
Replace power supply cord. See
ON/OFF Switch/Power Cord
Board Kit, page 27.
Replace loose terminals, crimp to
leads. Be sure terminals are firmly
connected.
Clean circuit board terminals.
Securely reconnect leads.
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