Table Of Contents - Graco A Series Instructions-Parts List Manual
120 v ac, 15 amp 3000 psi (210 bar) maximum working pressure
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Also See for A Series:
- Instructions - parts manual (52 pages) ,
- Instructions-parts list manual (48 pages) ,
- Manual (36 pages)
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Introduction
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Warnings
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Repair
General Repair Notes
LoPro 1000 BASIC COMPONENTS
Your new sprayer functions and operates differently than
other airless material 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. The function of the pressure
control 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 mo-
tor brushes. Its function is to drive the displacement
pump at the rate needed to supply sufficient material vol-
ume at the selected pressure. W orking 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
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 until you manually shut it of f and relieve
pressure.
Because the motor is DC, it is less sensitive to low volt-
age or voltage fluctuations than an AC motor
3-wire, 12 gauge (minimum) extension cord of up to 150
ft (45 m) can be used.
307-958
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INTRODUCTION
automobile
, and a
Electrical
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4
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10
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Mechanical
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Parts Lists and Drawings
21
Sprayer
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21
Pressure Control Assembly
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23
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Warranty
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Drive Assembly
The sealed drive assembly transfers power from the DC
motor to the displacement pump.
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
Graco Throat Seal Liquid, helps prevent damage to the
throat packings and piston rod.
Fluid Filter
The fluid filter strains the material to help avoid clogs in
the hose and spray tip. The filter includes a reusable ele-
ment and has a pressure drain valve for manually reliev-
ing fluid pressure.
Hoses
The grounded, nylon spray hoses have spring guards on
both ends. The 50 ft (15.2 m) hose has a 1/4 in. ID. The
6 ft (1.8m), 3/16 in. ID hose provides more flexible gun
movement. The nylon hose acts as a pulsation dam-
pener to absorb pressure fluctuations.
Spray Gun & RAC IV DripLess Tip Guard
The high pressure spray gun has a trigger safety which
prevents accidental triggering when it is engaged. See
the Detail in Fig 3-1. The gun also has a filter for material
straining. The gun' s tip guard is a safety feature which
helps reduce the risk of fluid injection injury. NEVER op-
erate the gun without the tip guard in place.
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Back Cover
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