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307679
Installation
Grounding
In a low pressure air spray system, static sparking is
generally not a problem. However, some simple pre-
cautions should be taken to reduce the risk. Check you
local electrical code for detailed grounding instructions
for your area and type of equipment, and be sure to
ground all of this spray/dispensing equipment.
1.
Pump:
use a ground wire and clamp. See Fig. 1.
2.
Air compressor:
follow manufacturer’s recommen-
dations.
3.
Fluid hoses:
use only grounded hoses with a
maximum of 500 ft (150 m) combined hose length
to ensure grounding continuity.
4.
Spray gun or dispensing valve:
grounding is ob-
tained through connection to a properly grounded
fluid hose and pump.
5.
Object being sprayed:
according to your local
code.
6.
Fluid supply containers:
according to your local
code.
7.
All solvent pails used when flushing
, according to
your local code. Use only metal pails, which are
conductive, placed on a grounded surface. Do not
place the pail on a nonconductive surface, such as
paper or cardboard, which interrupts the grounding
continuity.
8.
To maintain grounding continuity when flushing or
relieving pressure
, always hold a metal part of the
spray gun/dispensing valve firmly to the side of a
grounded metal pail, then trigger the gun/valve.
Fig. 1
TI1922A
Y
W
X
Z
To ground the pump:
To ground the pump, loosen the grounding lug locknut
(W) and washer (X). Insert one end of a 12 gal. (1.5
mm
2
) minimum ground wire (Y) into the slot in lug (Z)
and tighten the locknut securely. See Fig. 1. Connect
the other end of the wire to a true earth ground. See
the
Accessories
section on page 22 to order a ground
wire and clamp.
Flushing
The pump is tested with lightweight oil, which is left in
to protect the pump parts. If the fluid you are pumping
may be contaminated by the oil, flush out the oil with a
compatible solvent before using the pump. Follow
instructions below.
Before flushing, be sure the entire system and flushing
pails are properly grounded. Refer to
Grounding
at
left. Follow the
Pressure Relief Procedure
on page
7. Always use the lowest possible fluid pressure, and
maintain firm metal–to–metal contact between the
gun/valve and the pail during flushing to reduce the
risk of injury from fluid splashing or static sparking.
WARNING
To reduce the risk of static sparking or splashing
fluid in the eyes or on the skin, follow the
Pressure
Relief Procedure
on page 7 before flushing. Hold
a metal part of the gun/valve firmly to the side of a
grounded metal pail and use the lowest possible
fluid pressure during flushing.
For your safety, read the warning section
Fire or
Explosion Hazard
on page 3 before flushing, and
follow all recommendations given.
If you are pumping fluid which dries, hardens, or sets
up, flush the system with a compatible solvent as often
as necessary to prevent a buildup of dried fluid in the
pump or hoses.
If the pump is being used to supply a circulating sys-
tem, allow the solvent to circulate through the entire
system until the pump and system is thoroughly
flushed.
