Graco 308692N, Instruction Manual

Page: 8 / 24

8 308692
Setup
Supplied Components
Refer to Fig. 2.
WARNING
A red-handled bleed-type master air valve (E) and
a fluid drain valve (D) are supplied. These compo-
nents help reduce the risk of serious injury, includ-
ing fluid injection and splashing of fluid in the eyes
or on the skin, and injury from moving parts if you
are adjusting or repairing the pump.
The bleed-type master air valve relieves air trapped
between this valve and the pump after the air is
shut off. Trapped air can cause the pump to cycle
unexpectedly. Locate the valve close to the pump.
The fluid drain valve assists in relieving fluid pres-
sure in the displacement pump, hose, and gun.
Triggering the gun to relieve pressure may not be
sufficient.
D
The red-handled bleed-type master air valve (E)
is required in your system to relieve air trapped
between it and the air motor when the valve is
closed (see the
WARNING above). Be sure the
bleed valve is easily accessible from the pump, and
is located
downstream from the air regulator (F).
D
The air regulator (F) controls pump speed and
outlet pressure by adjusting the air pressure to the
pump. Locate close to the pump, but
upstream
from the bleed-type master air valve (E).
D
The air relief valve (41) opens automatically to
prevent over pressurization of the pump.
D
The fluid filter (16) includes a 60 mesh (250
micron) stainless steel element to filter particles
from the fluid as it leaves the pump. It also includes
the
fluid drain valve (D), which is required in your
system to relieve fluid pressure in the hose and gun
(see the
WARNING above).
D
The suction hose (25) and tube (26) allow the
pump to draw fluid from a 5 gallon (19 liter) pail (H).
The strainer at the end of the suction tube keeps
large particles from entering the pump.
D
The back pressure regulator (40) controls back
pressure to the gun and maintains proper circula-
tion pressure.
D
The 3-way valve (45) allows you to circulate fluid
back to the pump or return it to the fluid container.
Fluid Heater
The fluid heater (51) heats the fluid as it passes
through, to maintain the correct spraying viscosity.
Read and understand all instructions in the supplied
heater manual 309524 before operating the heater.
WARNING
COMPONENT RUPTURE HAZARD
Heat causes fluid to expand. If the
heated fluid is trapped with nowhere to
expand, it can cause component rupture.
Be sure to keep the heated fluid circulating (turn
the 3-way valve to CIRC). Do not install a fluid
shutoff device between the heater and the gun.
WARNING
FIRE, EXPLOSION, AND ELECTRIC
SHOCK HAZARD
The Viscon HP Heater must be installed
by a qualified electrician in compliance
with all state and local codes and regula-
tions, to reduce the risk of electric shock
or other serious injury during installation
or operation.
Refer to the Technical Data and to the
supplied Viscon HP Heater manual
309524 for information on heater power supply
requirements.
Do not plug in or unplug the power cord in any
area containing flammable fluids or fumes, to avoid
fire or explosion resulting in serious injury.
Do not put all flammable materials and debris on
or near the heater. Keep the work area clean.
WARNING
FIRE, EXPLOSION, AND ELECTRIC
SHOCK HAZARD
The heater electrical cord is rated for
105
_
C (221
_
F). Do not substitute a
lower temperature rated, generally
available cord.