3
INSTALLATION
NOTE:
Reference numbers and letters in parentheses
in the text refer to the callouts in the figures and
the parts drawing.
See page 17 for accessories available from Gra-
co. If you supply your own accessories,
BE
SURE
they are adequately sized and pressure–
rated to meet the system’s requirements.
Contact your Graco representative or Graco T echnical
Assistance
(1–800–543–0339)
for assistance in design-
ing a system to suit your particular needs.
PUMP LOCATION AND SET–UP
Place the unit on a hard, level surface. Check that the unit
is level in all directions.
Position the pump so the air regulators for the pump and
the ram are easily accessible. Refer to the Dimensional
Drawing on page 19 to ensure that there is suf
ficient
overhead clearance for your pump when the ram is fully
raised.
See Fig 1. Unpack the wiper plate assembly (300) and
slide it up onto the pump’s intake valve housing (111). Se-
cure the wiper plate to the pump with the two capscrews
supplied.
The 3 kg and 1 kg size wiper plate assemblies, Models
223–852 and 223–854, are shipped with an optional 1/4
PT–19 metric fluid outlet fitting. To use this fitting, remove
the 1/4 npt fitting (128) supplied on the pump. Apply
thread sealant to the male threads of the metric fitting and
screw it into the pump fluid outlet.
See Fig 1. Connect the air line tube (276) from the air as-
sist valve (218) to the wiper plate (300). Refer to
Con-
necting and Disconnecting Tubes
, below.
CONNECTING AND DISCONNECTING TUBES
To connect a tube to a fitting:
1. Grasp the tube, then slowly push it straight into the
fitting until it stops.
2. BE SURE that the tube is securely connected, and
will not pull out when air pressure is applied. T
o
check, pull back gently on the tube to ensure that it
will not pull out.
To disconnect a tube from a fitting:
1. Follow the
Pressure Relief Procedure
on page 2.
2. Push evenly on the fitting’s red release button.
3. While holding the release button in, pull the tube out
of the fitting.
4. To reuse the tubing, cut off the previously connected
portion at 90
, being careful not to damage the outer
diameter of the tube. Use of a tube cutter is recom-
mended. The fitting will leak if the tubing is not cut at
90
.
SYSTEM COMPONENTS AND ACCESSORIES
Refer to Fig 1.
Two required safety devices are supplied with your
pump: a bleed–type master air valve (208) and a
pump bleeder valve (125). These devices help re-
duce the risk of serious bodily injury including
splashing in the eyes or on the skin, and injury from
moving parts if you are adjusting or repairing the
pump.
The bleed–type master air valve relieves air
trapped between this valve and the pump after the
air is shut off. Trapped air can cause the pump to
cycle unexpectedly. The valve is located close to
the pump, downstream from the pump air regulator.
The pump bleeder valve assists in relieving fluid
pressure in the displacement pump, hose, and dis-
pensing valve. Triggering the dispensing valve to
relieve pressure may not be sufficient.
WARNING
Supplied Components
The following components are supplied with your pump.
See Fig 1.
The bleed–type master air valve (208)
is supplied
with your system to relieve air trapped between it and
the air motor when the valve is closed (see the
WARNING
above).
The pump air regulator (227a)
controls pump speed
and outlet pressure by adjusting the air pressure to
the pump. The regulator is located
upstream
from the
bleed–type master air valve.
The ram air regulator (227b)
controls ram speed by
adjusting the air pressure to the ram, and also con-
trols the pressure exerted by the wiper plate on the
fluid.
The pump bleeder valve (125)
is supplied in your
system to relieve fluid pressure in the displacement
pump, hose and dispensing valve (see the
WARN-
ING
above). Be sure the drain hole in the valve is
pointing down. This valve is also used to bleed air
from the pump when priming.
Air Line
Connect an air supply hose to the 1/4 npt(f) main air inlet
fitting (257). Install an air line filter and lubricator in the
main air line. In the main air line, upstream from all other
air line accessories, install a second bleed–type master
air valve to shut off all air to the system and to isolate the
accessories for servicing. See Accessories on page 17
for further information.
Fluid Line
Connect a fluid hose to the fluid outlet fitting (128). Con-
nect a suitable dispensing valve to the free end of the
hose. Refer to the Accessories section on page 17 for fur-
ther information.
