8
310314
System Setup
System Setup
The following typical system installation is only a guide
for selecting and installing system components and
accessories. Contact your Graco distributor for help in
designing a system to suit your particular needs.
Air-powered ram extruder systems force high viscosity
fluids into the intake valve of the fluid pump. Make
certain all accessories are adequately sized and pres-
sure-rated to meet your system’s requirements.
Air and Fluid Hoses
Be sure all air hoses (D) and fluid hoses (N) are prop-
erly sized and pressure-rated for your system. Use
only electrically conductive hoses. See Fig. 1.
Selecting System Ram Locations
System rams are to be positioned so that air regulator
controls for pumps and rams are easily accessible.
Make sure there is overhead clearance for rams when
fully raised. Refer to Dimensional Drawing on page 18
and separate ram manual 306934 (supplied) for addi-
tional setup data.
Use holes in ram base as a guide, drill holes for 13 mm
(1/2 in.) anchors.
Check that ram base is level in all directions. If neces-
sary, level base using metal shims. Secure base to
floor using 13 mm (1/2 in.) anchors to prevent ram
from tipping.
System Grounding
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section
FIRE, EXPLOSION AND
ELECTRIC SHOCK HAZARD
on
page 4.
1.
Ram Pumps:
check ground wire and clamp. See
Fig. 2. To install, loosen grounding lug locknut (W)
and washer (X). Insert one end of 1.5 mm
@
(12 ga)
minimum ground wire (Y) into slot in lug (Z) and
tighten locknut securely. Connect other end of wire
to true earth ground.
Fig. 2
W
X
Y
Z
0864
Pump Ground
2.
Air and fluid hoses:
use only electrically conduc-
tive hoses.
3.
Air compressor:
follow manufacturer’s recom-
mendations.
4.
Dispense gun:
ground through connection to
properly grounded fluid hose and pump.
5.
Material supply container:
follow your local code.
6.
Object material is applied to:
follow your local
code.
7.
Solvent pails used when flushing:
follow your
local code. Use only metal pails, which are conduc-
tive, placed on grounded surface. Do not place pail
on nonconductive surface, such as paper or card-
board, which interrupts grounding continuity.
8.
To maintain grounding continuity when flush-
ing or relieving pressure
, hold metal part of
dispense gun firmly to side of grounded
metal
pail,
then trigger gun.
