AIRLESSCO MP 300, Operation And Repair Manual

Page: 12 / 32

Operation
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4. Turn Pressure Control Knob to low.
5. Open the prime valve to the open (priming) position.
This will allow an easy start.
6. Turn the power ON/OFF switch to ON.
7. Point the gun into the metal pail and hold a metal
part of the gun firmly against the pail. Maintain firm
metal to metal contact between gun and container.
8. Disengage the gun trigger lock and squeeze the
trigger. At the same time, slowly turn the pressure
control knob clockwise, just enough to move liquid
at low pressure.
9. Allow the pump to operate until clean solvent comes
from the gun.
10. Release the trigger and engage the gun trigger lock.
11. If you are going to start spraying, place the pump or
suction tube into the supply container. Release the
gun trigger lock and trigger the gun into another
empty, metal container, holding a metal part of the
gun firmly against the metal pail, forcing the solvent
from the pump and hose. When paint starts coming
from gun, turn pressure control knob to minimum
pressure, place prime valve in prime (open) position
and engage the gun trigger lock.
12. If you are going to store the sprayer see Storage ,
page 13. Engage the gun trigger lock.
13. Whenever shutting down the sprayer, follow Pres-
sure Relief Procedure , page 10.
Startup
1. Prepare the material according to the material man-
ufacturer’s recommendations.
2. Place the suction tube into the material container.
3. Start the sprayer.
a. Prime Valve must be in the open (priming)
position.
b. After ensuring the gun trigger lock is engaged,
attach tip and safety guard.
c. Turn the power ON/OFF switch to the “ON”
position.
d. Turn the Pressure Control Knob clockwise to
prime the pump.
e. After the pump is primed, turn the Prime 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.
4. 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 10.
ti22322a
Closed
(Pressure)
Open
(Priming)
ti17403a
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NOTICE
To prevent damage and freezing during storage,
never leave water in the fluid pump