Setup; Air Line And Accessory Recommendations; Fluid Line And Accessory Recommendations - Graco 26C624 Instructions Manual

Setup

Setup
Air Line and Accessory
Recommendations
1. Install an air pressure regulator on the gun cylinder
air supply line. A minimum of 70 psi (0.49 MPa, 4.9
bar) air pressure must be supplied to the cylinder for
proper operation. Air pressure opens the valve, a
spring closes the valve. A three-way air valve, which
exhausts cylinder air, is required.
2. Install a bleed-type air shutoff valve on the main air
line. Install an additional bleed-type valve on each
pump air supply line, downstream of the pump air
regulator, to relieve air trapped between this valve
and the pump after the air regulator is shut off.
The bleed-type air shutoff valve is required in your
system to relieve air trapped between this valve and
the pump after the air regulator is closed. Trapped air
can cause the pump to cycle unexpectedly, which
could result in serious injury.
3. Install a bleed-type air shutoff valve on the gun air
cylinder supply line, downstream from the air
regulator, to shut off air to the gun cylinder. Connect
the air supply line to the gun cylinder air inlet (C).
See Fig. 4.
NOTE: The cylinder air inlet accepts 1/4 in. (6.3
mm) O.D. tubing.
8
Fluid Line and Accessory
Recommendations
• A fluid drain valve(s) is required in your system to
assist in relieving fluid pressure in the
displacement pump, hose and gun; triggering the
gun to relieve pressure may not be sufficient.
• A fluid pressure regulator must be installed in the
system if the pump's maximum working pressure
exceeds the gun's maximum fluid working
pressure (see the front cover).
1. Install a fluid filter and drain valve(s) close to the
pump's fluid outlet.
2. Install a fluid pressure regulator to control fluid
pressure to the gun.
NOTE: Some applications require fine-tuned control
of fluid pressure. You can control fluid pressure
more accurately with a fluid pressure regulator than
by regulating the air pressure to the pump.
3. Install a fluid shutoff valve to shut off the fluid supply
to the gun.
4. For paint spray applications, install an in-line fluid
filter, part 210500 or 26C633, on the gun fluid inlet
(F) to avoid clogging the spray tip with particles from
the fluid. See F . 5 on page 9.
IG
5. Connect the electrically conductive fluid hose to the
gun fluid inlet (F) or optional in-line filter.
311053L