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307-711
PT2500 SPRAYER DESCRIPTION
PRESSURE CONTROL KNOB
OPEN
Counterclockwise
CLOSE
Clockwise
1/4 npsm(m) OUTLET
DIAPHRAGM
P
AINT PUMP
P
AINT HOSE
REVERSE-A-CLEAN
TM
IV
DripLess
TM
TIP GUARD
AND SwitchT
ip
TM
SPRA
Y TIP
BLACK MAX
TM
SPRAY GUN
STRAINER
MOTOR
HYDRAULIC PUMP
ON/OFF SWITCH
HYDRAULIC OIL FILL CAP
INCREASE Clockwise
DECREASE Counterclockwise
BYP
ASS V
ALVE
0266
0267
0270
DRAIN TUBE
Motor
The
sprayer has a 1/2 HP
, 120 V
, 60HzAc, single
phase,
1725
rpm motor
. 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’s function is to drive 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 is immersed directly 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 is located inside the hydraulic reser
-
voir.
The motor drives
an eccentric bearing which pushes
the
piston in and out of the hydraulic pump. The pump re
-
ciprocates
the hydraulic fluid to operate the diaphragm.
Diaphragm
The diaphragm separates the hydraulic and paint por-
tions 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 clockwise to increase pressure and
counterclockwise
to decrease pressure.
Bypass V
alve
The
bypass valve has two functions: (1) to assist in
prim
-
ing
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 is supplied
with sprayer Model 218–501. This 25 ft. (7 m) hose has
a 1/4 in. ID, 1/4 npsm(fbe) couplings and spring guards
on
both ends.
Spray Gun, Reverse-a-clean IV T
ip Guard
And Spray T
ip
The
spray gun supplied with Model 218–501 has a tough,
lightweight
plastic body
. The gun has a
trigger safety le
-
ver which prevents accidentally triggering the
gun
when
the lever is set in the safe position. (See WARNINGS,
page 4.)
The Reverse-A-Clean IV Tip Guard uses high pressure
fluid to unclog the spray tip without removing it from the
gun. (See page 12.) It 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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