Graco ULTRA AIRLESS 230-963 - Manual (Page 5)

Your new Ultra" Sprayer functions and operates
differently than other airless paint sprayers. This section
will help you become familiar with the sprayer before
operating it.
Pressure Control
The pressure control includes an ONlOFF switch for the
sprayer, the pressure adjusting control knob, and a
pressure sensing device. Its function is to control the
motor speed so that the sprayer maintains constant
fluid pressure at the pump outlet.
The DC motor has sealed bearings and replaceable
Motor
motor brushes. Its function is to drive the displacement
volume at the selected pressure.
pump at the rate needed to supply sufficient .paint
Working together, the pressure control and motor
cause the pump to cycle whenever there is fluid or
pressure demand. When the pump is cycling, the motor
sounds like an automobile starter cranking. When the
pump is not cycling, the motor hum intermittently
shut itself off. However, there will still be power to the
until the fluid pressure stabilizes, then the motor will
sprayer and it will stay pressurized and ready to use
unless you manually shut it
off
and relieve pressure.
Because the motor is DC, it is less sensitive to low
voltage or voltage fluctuations than an AC motor, and
an extension cord of up to 45 m feet) can be used.
The sealed drive assembly transfers power from the
Drive Assembly
motor to the displacement pump.
4
Displacement Pump
The positive displacement, volume-balanced pump pro-
vides equal fluid both the up and down
pump strokes. The pump has a wet-cup which, when
filled with Graco Throat Seal Liquid, helps prevent
damage to the throat packings and piston rod.
Fluid Filter
The fluid filter provides the final paint straining to help
avoid clogs in the hose and spray tip. The filter includes
a reusable element and a drain valve for relieving fluid
pressure when shutting
off
the sprayer.
Two grounded, nylon spray hoses with spring guards
Hoses
are included with the sprayer. The 15.2 m hose
hose allows flexible gun movement. The nylon hose
has a in. ID. The 0.9 m foot), 3/16 in. ID whip
material acts as a pulsation dampener to absorb
pressure fluctuations.
Spray Gun IV Tip
The spray gun includes a trigger safety latch which
Guard
prevents accidental triggering when it is engaged (see
the WARNING on page and a trigger guard which
prevents accidental triggering if the gun is dropped. The
Reverse-A-Clean uses high pressure
fluid to remove clogs from the spray tip without remov-
ing it from the gun. It includes a safety tip guard which
helps reduce the risk of fluid injection injury.