Graco 309489D, Instructions Manual

Page: 9 / 20

9 309489
Operation
Use the air regulator (A) to control fluid pressure and
pump speed. Always use the lowest pressure neces-
sary to get the desired results. Higher pressures cause
premature pump wear and spray tip wear, and usually
do not improve the spray pattern.
WARNING
To reduce the risk of overpressurizing your system,
which could result in component rupture and cause
serious injury, never exceed the maximum working
pressure of the lowest rated component in your
system. Lowering the air pressure to the motor will
proportionately lower the fluid outlet pressure from
the pump. Refer to the Technical Data on page 16
for the maximum air and fluid working pressure of
this pump.
Shutdown and Care of the Pump
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
Relieve the pressure whenever you stop spraying.
Always stop the pump at the bottom of its stroke to
prevent fluid from drying on the rod and damaging the
throat packings.
If you are pumping fluid which dries, hardens, or sets
up, flush the system with a compatible solvent as often
as necessary to prevent a build up of dried fluid in the
pump or hoses.