7
SETTING UP OF UNIT
TOOLS NEEDED:
2 x 8" or larger crescent wrench
PROCEDURE:
1) Remove all system components from the box for
assembly.
2) Remove protective cap from outlet connection of
pump.
3) Install handle and tool box. (DC-4000 only).
4) Connect high pressure airless paint hose to pump
outlet. Tighten to approximately 20 ft. lbs.
5) Attach the tip assembly to the spray gun.
6) Connect the paint hose to the swivel connection of
the spray gun. Tighten 20 ft lbs. Ensure the gun
handle is securely hand tightened to the gun.
7) Double check all connections, the unit is now ready.
Note: The pump contains a preservative oil when you
receive it, that may drip from the various connections
when the protective caps are removed.
WARNING: INJECTION HAZARD POSSIBLE. DO NOT
SPRAY WITHOUT TIP IN PLACE. ALWAYS ENGAGE
TRIGGER LOCK BEFORE REMOVING, REPLACING
OR CLEANING TIP. NEVER TRY TO CLEAN THE TIP
WITH YOUR FINGERS.
To disengage your trigger lock: Your spray gun is
shipped from the factory with the trigger lock in the
engaged position (horizontal on the L-65). To disen-
gage, turn the trigger lock down until it is in a vertical
position. To engage the trigger lock, turn it back to a
horizontal position.
trigger lock.
Figure 2. - L-65 gun components.
gun handle
with filter
inside.
hand tight
only!
tip.
tip housing.
trigger guard
for safety. do
not remove!
high pressure
swivel, 1/4"npt.
ELECTRONIC CONTROLS (DC-4000):
OFF: The first 10-20 degrees of pressure knob rotation
do not activate unit.
PRIME ZONE: The next approx. 20 degrees of rotation
will turn the motor on at a constant slow speed, when the
prime valve is in the open (prime) position. This is the
best speed for priming and cleaning the unit. It also works
well for power rolling. The safety cutout is not activated in
this zone. Maximum pressure in the prime zone is about
1000 psi.
SPRAYING ZONE: As the pressure knob is turned past
the prime zone (with prime valve open) the motor will
suddenly change from a constant low speed to full speed.
When the prime valve is closed, this will give fully adjust-
able pressure from about 900 psi to approximately 3000
psi.
The safety circuit is activated throughout the spray zone.
Safety turns motor off if the pressure drops from spraying
pressure to less than 500 psi for more than 25 seconds
(continuous). If the pump were to run out of paint, the gun
would have to be held open to ensure that the pressure
drop is enough to activate safety. This is to prevent
accidental triggering of safety with large tips, air bubbles
in paint etc. Indicator light will go off if safety has been
activated. Safety is re-set by turning power OFF for 3-5
seconds.
Figure 4. - DC-4000 control box components.
circuit
breaker
prime
valve
to prime,
turn ccw
on/off
pressure
control
"spray"
"prime"
"off"
sensor assembly
paint out (hose
connection)
indicator light
Figure 3. - DC-4000 system components.
foot valve
paint pump
oil drain
connecting bolt
packing nut
gear oil fill plug
