General Description
This fine finish spray system is versatile enough to use for low
pressure fine finish work as well as high pressure airless
spraying. The system includes a diaphragm paint pump and
an air compressor that work together to provide this versatility.
Setup
Use this procedure to set up the spray system.
1. Make sure the pump ON/OFF switch and the compressor
ON/OFF switch are in the OFF position.
2. Make sure the pressure control knob is turned fully
counterclockwise to its lowest pressure setting.
3. Lock the gun by turning the gun lock nut clockwise (when
looking from the back of the gun) until it stops. This
closes the material valve in the gun.
4. Using a wrench, attach a
minimum of 50’ of 1/4” nylon
airless spray hose to the
material outlet fitting on the
pump. Tighten securely.
5. Attach the spray hose to the
material inlet fitting on the spray
gun. Using two wrenches (one
on the gun and one on the
hose), tighten securely.
Make sure all airless hoses and
spray guns are electrically
grounded and rated for at least
2800 PSI (19 MPa) fluid pressure.
WARNING
Material
Inlet
Fitting
Gun Lock Nut
Air Inlet
Fitting
Compressor
ON/OFF
Switch
Pressure Control Knob
Pump ON/OFF
Switch
PRIME/SPRAY
Valve
Pressure
Control
Knob
Diaphragm Pump
Suction Hose
Material Pressure
Gauge
Return Hose
Air Compressor
Material
Outlet Fitting
Air
Pressure
Gauge
Air
Outlet
Fitting
Air Pressure
Regulator
4
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6. Attach the air hose to the air outlet fitting on the
compressor. Tighten securely.
7. Attach the air hose to the air inlet fitting on the spray gun.
Tighten securely.
Reversing the hose connections could result in serious
injury. Make sure the airless spray hose is connected
from the diaphragm pump to the material inlet fitting on
the gun and the air hose is connected from the
compressor to the air inlet fitting on the gun.
8. Make sure the electrical service is 120V, 15 amp minimum.
9. Plug the power cord into a properly grounded outlet at
least 25’ from the spray area.
Always use a minimum 12 gauge, three-wire extension
cord with a grounded plug. Never remove the third prong
or use an adapter.
10. Firmly press the pusher valve button on the side of the pump
housing to make sure the outlet ball valve moves freely.
Operation
Use the following procedures to operate the spray system.
Priming the Pump
Preparing to Prime
1. Fill the inlet valve with water or
with a light household oil.
2. Make sure that the
PRIME/SPRAY valve is set to
PRIME and that the pressure
control knob is turned
counterclockwise to its lowest
pressure setting.
3. Turn on the pump by moving the
pump ON/OFF switch to the ON
position.
4. Increase the pressure by turning
the pressure control knob
clockwise 1/2 turn.
5. Force the inlet valve to open and
close by pushing on it with a
screwdriver or the eraser end of
a pencil. It should move up and
down about 1/16 of an inch.
Continue until water or oil is
sucked into the pump. This will
wet the moving parts and break
loose any old paint residue.
6. Put the palm of your hand over
the inlet. Turn the pressure
control knob clockwise to its
maximum setting. You should
feel suction coming from the inlet
valve. If you do not, refer to the “Removing and Cleaning
the Outlet Valve” procedure in the Maintenance section.
PRIME/SPRAY
Valve
Pusher Valve Button
CAUTION
WARNING
English
