Pressure
Pressure
Pressure Relief
Relief
Relief Procedure
Procedure
Procedure
Follow the Pressure Relief Procedure
whenever you see this symbol.
This equipment stays pressurized until pressure
is manually relieved. To help prevent serious
injury from pressurized fluid, such as splashing
fluid, follow the Pressure Relief Procedure when
instructed.
1.
Close the abrasive ball valve (M).
2.
Close the compressor supply air valve, then turn
the compressor off.
3.
Engage the blast control switch (B) to relieve
pressure in the system.
4.
Verify that the supply pressure gauge (ZC) reads
0 psi. Then disconnect the air inlet hose from the
system.
5.
Turn the selector valve (W) to OFF.
6.
Open the pot dump valve (J) until the pot
pressure gauge (L) reads 0 psi.
Grounding
Grounding
Grounding
(ATEX
(ATEX
(ATEX systems
systems
systems only)
only)
only)
The equipment must be grounded to reduce the
risk of static sparking. Static sparking can cause
fumes to ignite or explode. Grounding provides an
escape wire for the electric current.
Systems:
Systems:
Systems: Use supplied ground wire and clamp
(237686).
Air
Air
Air and
and
and fluid
fluid
fluid hoses:
hoses:
hoses: Use only genuine Graco ATEX
rated, conductive blast hoses with a maximum of
150 ft (45 m) combined blast hose length to ensure
grounding continuity. Check the electrical resistance
of the blast hoses. If the total resistance to ground
exceeds 29 megaohms, replace the blast hose
immediately.
Air
Air
Air compressor:
compressor:
compressor: follow manufacturer’s
recommendations.
10
3A3489A
