AIRLESSCO 3A1186F, Manual

Page: 9 / 28

Operation
3A1186F 9
b. After ensuring the gun trigger lock is engaged,
attach tip and safety guard.
c. Turn the engine ON/OFF switch to the “ON”
position.Pull rope vigorously until engine
starts.
d. Turn the Pressure Control Knob clockwise to
prime the pump.
e. After the pump is primed, turn the Prime/PR
Valve to the “CLOSED” position.
f. Turn Pressure Control Knob to the desired
spray pressure.
g. Disengage the gun trigger lock to begin spray-
ing.
Adjusting the Pressure
When adjusting the pressure, turn the Pressure Control
Knob clockwise to increase pressure and counterclock-
wise to decrease pressure. Always use the lowest pres-
sure necessary to completely atomize the material. If
more coverage is needed, use a larger tip rather than
increasing the pressure. Check the spray pattern. The
tip size and angle determines the pattern width and flow
rate.
Shutdown
1. Relieve Pressure , page 6.
2. Clean the tip and gun as recommended in the sepa-
rate Gun Manual supplied with the gun.
3. If spraying water-based material or a material that
could harden in the sprayer overnight, flush the
sprayer after use. See
Flushing , page 7.
Storage
Short Term
1. Flush sprayer with compatible solvent before stor-
ing, then fill the pump and hoses with an oil based
solvent such as mineral spirits or Graco or Airlessco
Pump Armor.
• For oil base paint: flush with mineral spirits
• For water-base paint: flush with water, then min-
eral spirits and leave the pump, hose and gun
filled with mineral spirits.
Long Term
For longer storage, use Graco or Airlessco Pump
Armor. Shut off sprayer,
Relieve Pressure , page 6, and
make sure prime valve is left open.
Start Up After Storage
Before using water-base paint, flush sprayer with soapy
water and then a clean water flush. When using oil-base
paint, flush out the mineral spirits with the material to be
sprayed.
NOTE: Always store unit indoors.
• To reduce the risk of injection, never hold your
hand, body, fingers or hand in a rag in front of the
spray tip when cleaning or checking for a cleared
tip. Always point the gun toward the ground or into
a waste container when checking to see if the tip is
cleared or when using a self cleaning tip.
• When you spray into the paint bucket, always use
the lowest spray pressure and maintain firm metal
to metal contact between the gun and container.
• To stop the unit in an emergency, turn the engine
off. Then relieve the fluid pressure in the pump and
hose. See
Pressure Relief Procedure , page 6
NOTICE
NOTE: Operating the sprayer at higher pressure
than needed wastes material, causes early tip wear,
and shortens sprayer life.