Graco C Series Instructions-Parts List Manual page 5

For assistance in setting up a plural component sys-
tem, you should contact your Graco distributor. This
will help ensure that you select the proper type and
size of equipment for your job.
For Model 207861, the solvent (S) and material (M)
inlet valves have 1/4 npt(m) threads. The manifold out-
let (F) has 1/2 npt(m) threads. See Fig. 1.
For Model 948338, the solvent (S) inlet valve has 1/4
npt(m) threads. The material (M) inlet valves have 1/2
npt(f) threads. The manifold outlet (F) has 1/2 npt(f)
threads. See Fig. 1.
Start and prime the solvent pump and check the flush-
ing system before connecting the material hoses.
Push the actuating lever forward to open the material
valves and back to close them.
Open the solvent valve and flush the mixing equipment
immediately after closing the material valves, to pre-
vent material from hardening in the mixer or dispenser.
Move Lever Forward to Open
S
M
Model 207861 Shown
Fig. 1
Installation
Flushing
When you stop spraying/dispensing for a short time,
close the mixer material valves and open the solvent
flush valve. Point the material outlet into a waste
container, open the gun/valve and flush until the sol-
vent is clean. Close the solvent valve, and open the
gun/valve to relieve the pressure.
For longer shutdowns, solvent flush as above, follow
the Pressure Relief Procedure below, then discon-
nect the hose and equipment from the mixer. Soak and
clean parts with clean solvent and a stiff brush. Rinse
and blow dry with air. Clean all material off the mixer
chamber. Do not reassemble until you are ready to use
the mixer again.
Solvent may channel through viscous materials and
leave a coating of mixed material on the inner tube of
your hose. Be sure all material is thoroughly flushed
from the hose after each use.
Disconnect all other spray/dispensing equipment, as
necessary, and clean thoroughly.
Pressure Relief Procedure
tally. Fluid under high pressure can be injected
through the skin and cause serious injury. To
reduce the risk of an injury from injection, splashing
fluid, or moving parts, follow the Pressure Relief
M
Procedure whenever you:
D are instructed to relieve the pressure,
D stop spraying/dispensing,
D check or service any of the system equipment,
D or install or clean the spray tip/nozzle.
1. Close the mixer material valves.
2. Open the solvent flush valve and flush until clean.
3. Shut off the material and solvent pumps.
4. Open the gun/valve to relieve pressure.
5. If material has hardened in the hose(s) or mixer,
F
8613A
WARNING
INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying/dispensing acciden-
close the material valves, shut off the material and
solvent pumps, and slowly loosen the material inlet
hose(s) to relieve pressure, then remove the
dispensing hose.
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