Air Line Accessories; Grounding - Graco SaniForce SDU Series Manual

Air Line Line Accessories Accessories
Air Air Line Accessories
See Fig. Fig. 1 1 1 . Fig.
Outlet Line Line Pressure Pressure Relief
• Outlet Outlet Line Pressure
pressure relief path for the outlet line. Only needed
if a valve is used downstream in the outlet line
Air line line (T): (T): use 1/2 in. ID minimum air line. Larger
• Air Air line (T):
ID is better, especially with line runs.
• Air Air Air line line drain line drain valve drain valve valve (U) (U) (U)
• Air Air line Air line filter line filter (V): filter (V): removes harmful dirt and moisture (V):
from compressed air supply.
Second bleed-type bleed-type air air valve
• Second Second bleed-type air
accessories and supply system for servicing.
Locate upstream from all other air line accessories.

Grounding

Grounding Grounding
The equipment must be grounded to reduce the
risk of static sparking and electric shock. Electric
or static sparking can cause fumes to ignite or
explode. Improper grounding can cause electric
shock. Grounding provides an escape wire for the
electric current.
Before operating the pump, ground the system as
explained below.
• Electro-pneumatic Electro-pneumatic control Electro-pneumatic control panel: control
grounded through the grounding conductor of the
incoming power wiring.
• Air Air and Air and fluid and fluid hoses: fluid hoses: Use only grounded hoses with hoses:
a maximum of 500 ft (150 m) combined hose length
to ensure grounding continuity. Check electrical
resistance of hoses. If total resistance to ground
exceeds 29 megohms, replace hose immediately.
• Dispense Dispense Dispense valve: valve: valve: ground through connection to a
properly grounded fluid hose and pump.
Fluid supply supply container: container: Follow local code.
• Fluid Fluid supply container:
Solvent containers containers used used when
• Solvent Solvent containers used
local code. Use only conductive metal containers,
placed on a grounded surface. Do not place the
container on a non-conductive surface, such as
paper or cardboard, which interrupts grounding
continuity.
3A5402J
Relief Valve Valve (R): (R): provides a
Relief Valve (R):
valve (W): (W): isolates air line
valve (W):
panel: If installed, it is panel:
when flushing: flushing: Follow
when flushing:
SDU: Attach the ground cables as shown. Attach
• SDU: SDU:
the clamp end of the grounding wire to a true earth
ground.
Check your system electrical continuity after the
initial installation, and then set up a regular schedule
for checking continuity to be sure proper grounding
is maintained. The resistance should not exceed 1
ohm when measured between line ground and any
metal on the system.
Installation
13