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Paint and/or water is
frozen or has
hardened in the pump.
Pump does not
Spray/Prime Switch is
prime.
in Spray position.
Inlet screen is clogged,
or suction tube is not
immersed.
Pump was not primed
with water or solvent
based flushing fluid.
Inlet valve check ball is
stuck.
Inlet valve check ball
or seat is dirty.
Outlet check ball or seat
is dirty.
Suction tube is leaking.
Fluids are viscous or
sticky.
Unplug the sprayer from the outlet. If frozen, do not try to
start the sprayer until it is completely thawed or the motor,
control board, and/or drivetrain will be permanently
damaged.
Ensure the power switch is OFF, place the sprayer in a
warm area for several hours, then plug in the power
cord and turn the sprayer ON. Slowly increase
pressure setting to see if the motor will start.
If paint has hardened in the sprayer, the pump packing
seals, valves, drivetrain, and/or pressure switch will need
to be replaced. Have the sprayer serviced by a qualified
repair person.
Turn Spray/Prime Switch to Prime position (pointing down)
Clean debris from inlet screen and make sure the
suction tube is immersed in fluid.
Remove suction tube from paint. Prime the pump with the
correct flushing fluid.
Remove the suction tube and place a pencil into the inlet
section to dislodge the ball, allowing the pump to prime
properly.
Remove inlet fitting. Clean or replace the ball and seat.
Remove the outlet fitting. Clean or replace the ball and
seat.
Tighten the suction tube connection. Inspect for cracks
or vacuum leaks.
Some fluids may prime faster if the Power Switch is
momentarily turned off so the pump can slow and stop.
Repeat several times if necessary.
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