INTRODUCTION .I
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ULTRATM 333 BASIC COMPONENTS
Model 231-333 shown
PRESSURE CONTROL KNOB
ELECTRIC MOTOR
FLUID FILTER
DRIVE ASSEMBLY
CIRCUIT BREAKER
FLUID OUTLET
RESET BUlTON
ON/OFF SWITCH
DISPLACEMENT PUMP
DRAIN VALVE
MAIN FLUID HOSE
TIP GUARD -/
Your new UltraTM 333 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 ON/OFF switch for the
sprayer, the pressure adjusting control knob, a pressure
sensing device, and a current overload circuit breaker
with a manual reset button. 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 at the selected pressure.
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 hums, hums intermit-
tently, or appears to have 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 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 150 feet (45 m) can be used.
Drive Assembly
The sealed drive assembly transfers power from the DC
motor to the displacement pump.
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Displacement Pump
The positive displacement, volume-balanced pump pro-
vides equal fluid delivery on both the up and down
pump strokes. The pump has a wet-cup which, when
filled with Grace 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.
Hoses
The grounded, nylon spray hoses have spring guards on
both ends. The 50 foot (15.2 m) hose has a l/4 in. ID.
The 3 foot (0.9 m), 3/16 in. ID whip hose allows flexi-
ble gun movement. The nylon hose material acts as a
pulsation dampener to absorb pressure fluctuations.
Spray Gun & Reverse-A-Clean Ill Spray Tip
Both the “Contractor” and “Flex” spray guns include a
trigger safety which prevents accidental triggering
when it is engaged (see the WARNING on page 3):The
Reverse-A-Clean III
spray
tip uses high pressure fluid to
remove clogs from the spray tip without removing it
from the gun. It includes a safety tip guard which helps
reduce the risk of injection injury.
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