Graco ULTRA AIRLESS 230-963 Instructions And Parts List page 5

400
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.
Motor
The DC motor has sealed bearings and replaceable
motor brushes. Its function is to drive the displacement
pump at the rate needed to supply sufficient .paint
volume the selected pressure.
at
Working together, the pressure control and motor
the pump to cycle whenever there is fluid or
cause
pressure demand. When the pump is cycling, the motor
sounds like an automobile starter cranking. When the
pump is not cycling, the motor may hum intermittently
until the fluid pressure stabilizes, then the motor will
shut itself off. However, there will still be power to the
sprayer and it will stay pressurized and ready to use
unless you manually shut
Because the motor is DC,
voltage or voltage fluctuations than an AC motor, and
an extension cord of up to 45 m (150 feet) can be used.
Drive Assembly
The sealed drive assembly transfers power from the DC
motor to the displacement pump.
4
307-671
off
and relieve pressure.
it
is less sensitive to low
it
Displacement Pump
The positive displacement, volume-balanced pump pro-
vides equal fluid delivery'on both the up and down
pump strokes. The pump has
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
off
pressure when shutting
Hoses
Two grounded, nylon spray hoses with spring guards
are included with the sprayer. The 15.2 m (50foot) hose
has 114 in. ID. The 0.9 m
a
hose allows flexible gun movement. The nylon hose
as a
material acts pulsation dampener to absorb
pressure fluctuations.
Spray Gun & Reverse-A-CleanTM IV DripLessTM Tip
Guard
The spray gun includes a trigger safety latch which
prevents accidental triggering when it is engaged (see
the WARNING on page 2) and
prevents accidental triggering if the gun is dropped. The
Reverse-A-Clean IV SwitchTipTM uses high pressure
fluid to remove clogs from the spray tip without remov-
ing from the gun. It includes a safety tip guard which
it
helps reduce the risk of fluid injection injury.
a
wet-cup which, when
the sprayer.
(3
foot), 3/16 in. ID whip
a
trigger guard which