Pressure Relief Procedure; Grounding (Atex Systems Only) - Graco EcoQuip 2 Operation, Repair, And Parts

Pressure Relief Procedure

Pressure Relief Relief Procedure
Pressure Pressure Relief
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.
10
Procedure
Procedure
5. Turn the selector valve (W) to BLAST.
6. Open the pot dump valve (J) until the pot
pressure gauge (L) reads 0 psi.
Grounding
Grounding Grounding
(ATEX (ATEX systems (ATEX
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: Use supplied ground wire and clamp
Systems: Systems:
(237686).
Air and and fluid fluid hoses: hoses: Use only genuine Graco
Air Air and fluid hoses:
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 compressor: compressor: follow manufacturer's
Air Air compressor:
recommendations.
systems only) systems only) only)
3A3489E