Filter
Top Products
Troubleshooting
8 311911C
Troubleshooting
Problem
What To Check
(If check is OK, go to next check)
What To Do
(When check is not OK, refer to this column)
Sprayer Won’t Operate
Basic Fluid Pressure 1. Pressure control knob setting. Motor
will not run if set at minimum (fully
counter-clockwise).
Slowly increase pressure setting to see if motor
starts.
2. Spray tip or fluid filter may be
clogged.
Relieve pressure, page 7. Then clear clog or clean
gun filter. Refer to gun instruction manual, 311937.
Basic Mechanical 1. Pump frozen or hardened paint Thaw sprayer if water or water-based paint has fro-
zen 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 13, Displacement Pump Replacement.
2. Displacement pump connecting rod
pin. Pin must be completely pushed
into connecting rod and retaining
spring must be firmly in groove or
pump pin.
Push pin into place and secure with spring retainer.
See page 13, Displacement Pump Replacement.
3. Motor. Remove drive housing
assembly. See page 15, Drive Hous-
ing Replacement. Try to rotate fan
by hand.
Replace motor if fan won’t turn. See page 34, Motor
Replacement.
Basic Air Pressure 1. Power/function selector. Ensure selection is AA.
2. Spray air pressure regulator may be
closed (FinishPro 395)
Pull air regulator to unlock and turn clockwise to
open.
3. Air valve at gun may be closed Turn air regulator counter-clockwise to open.