Graco Inc. CED1 Manuel D’Utilisation

Basic Fluid Pressure Problems

Pressure control knob setting. Motor will not 
run if at minimum setting (fully counterclock-
wise). 

Slowly increase pressure setting to see 
if motor starts.

Spray tip or fluid filter may be clogged.

Relieve pressure and clear clog or 
clean filter; refer to separate gun or tip 
instruction manual.

Basic Mechanical Problems

Frozen or hardened paint.

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 packing. See repair man-
ual.

Displacement pump connecting rod pin. Pin 
must be completely pushed into connecting 
rod and retaining spring must be firmly in 
groove of pump pin.

Push pin into place and secure with 
spring retainer.

Motor. Remove drive housing assembly. 
Try to rotate fan by hand.

Replace motor if fan won't turn.

Basic Electrical Problems

Motor control board. Board shuts down and 
displays error code.

See Control Board Diagnostics.

Electrical supply. Meter must read: 210-255 
Vac for 220-240 Vac models;
85-130 Vac for 100-120 Vac models.

Reset building circuit breaker; replace 
building fuse. Try another outlet.

Extension cord. Check extension cord conti-
nuity with volt meter.

Replace extension cord.

Sprayer power supply cord. Inspect for dam-
age such as broken insulation or wires. 

Replace power supply cord.

Check that motor leads are securely fastened 
and properly mated.

Replace loose terminals; crimp to 
leads. Be sure terminals are firmly con-
nected. Clean circuit board terminals. 
Securely reconnect leads.

ON/OFF Switch. Connect volt meter between 
L1 and L2 terminal on ON/OFF switch. Plug 
in sprayer and turn ON. Meter must read:

210-255 Vac for 220-240V models 

85-130 Vac for 100-120V models.

Replace ON/OFF switch.

All terminals for damage or loose fit.

Replace damaged terminals and 
reconnect securely.