Sprayer
Description
KEY
A Hydraulic
pump
B
Rac IV DripLess tip guard
and spray tip
4
Pressure control knob
5
Hydraulic oil fill cap
11 On/Of
f switch
18 Motor
21 Diaphragm
22
Paint pump
27 Strainer
59
Drain tube
63
Fluid outlet
66
Bypass valve
67 Outlet
84
Paint hose
85
Spray Gun
59
27
66
4
63
A
5
85
84
B
18
11
21
22
Decrease
pressure (counterclockwise).
Increase
pressure (clockwise).
Open (counterclockwise).
Close (clockwise).
Decrease
pressure (counterclockwise).
Increase
pressure (clockwise).
Open (counterclockwise).
Close (clockwise).
Motor
The sprayer has a 1/2 HP
,
230 V
AC, 50Hz, single phase,
1425
rpm motor (18).
The motor is supplied with a three-
wire power supply cord and a three-prong plug. The
sprayer
ON/OFF switch is located on the box on the
side
of the motor. The motor drives the hydraulic pump. The
motor
runs continuously when it is
turned on to keep the
paint
at the desired pressure.
Paint Pump
The
paint pump (22) is immersed into a 5 gallon paint pail,
so the pump is actually being pressure fed without the
mess
and trouble of pouring paint into a hopper
.
Hydraulic Pump
The hydraulic pump (A) is located inside the hydraulic
reservoir. The motor drives an eccentric bearing which
pushes
the piston in and out of the hydraulic pump. The
pump
reciprocates the hydraulic fluid to
operate the dia
-
phragm.
Diaphragm
The diaphragm (21) separates the hydraulic and paint
portions
of the paint pump. Hydraulic oil causes the dia
-
phragm to move up and down almost 30 times per sec-
ond,
no matter what pressure you are spraying at.
Pressure Control Knob
The paint pressure is regulated by turning the pressure
control knob (4) clockwise to increase pressure and
counterclockwise
to decrease pressure.
Bypass V
alve
The
bypass valve (66) has two
functions: (1) to assist in
priming the paint pump during initial startup, and (2) to
provide positive relief of paint pressure from the gun,
hose
and sprayer
.
Paint Hose
One electrically conductive nylon paint hose (84) is
supplied
with sprayer Model 218–730. This 7 m hose has
a 6 mm ID, 1/4 npsm(fbe) couplings and spring guards
on
both ends.
Spray Gun, Reverse-A-Clean (RAC) IV T
ip Guard
and Spray T
ip
The
spray gun (85) has a tough, lightweight plastic body
.
The gun has a trigger safety lever which prevents acci-
dentally triggering the gun when the lever is set in the
safe
position. (See
WARNINGS
, page 4.)
The
RAC IV T
ip Guard (B) uses high pressure fluid to un
-
clog
the spray tip without removing
it from the gun. (See
page
16.) The RAC IV includes a safety
tip guard which
helps
reduce the risk of a fluid
injection injury
. A No. 315
spray
tip for use with latex paint is also included.
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