Graco ProMix PD2K Electronic Operation page 28

Operation
Flush the System
Follow this procedure before:
• the first time material is loaded into the equipment
• servicing
• shutting down equipment for an extended period
of time
• putting equipment into storage
Single Color System
1. Relieve the pressure.
Pressure Relief Procedure, page
2. Disconnect the color and catalyst supply lines
from the pump inlet manifolds, and connect
regulated solvent supply lines.
3. Set the solvent supply pressure regulator at the
lowest pressure possible, to avoid splashing or
an injection injury. Generally a setting of 25–50
psi (0.18–0.35 MPa, 1.8–3.5 bar) is sufficient.
4. Set the mix manifold to the SPRAY position.
5. On the ADM, go to the Fill screen. Set the
Material to Color (A). Press
will pump solvent through pump A all the way to
the gun.
6. Hold a metal part of the gun firmly to a grounded
metal pail. Trigger the gun until clean solvent
dispenses.
7. On the ADM, go to the Fill screen. Set the
Material to Catalyst (B). Press
system will pump solvent through pump B all the
way to the gun.
8. Relieve the pressure.
Pressure Relief Procedure, page 29
28
See
29.
. The system
. The
See
Color Change System
1. Relieve the pressure.
Pressure Relief Procedure, page
2. Attach regulated solvent supply lines as follows:
• Multiple color/single catalyst system: On the
color side, do not disconnect the color supply
line from the inlet manifold of Pump A. Instead,
connect a regulated solvent supply line to the
designated solvent valve on the color valve
manifold. On the catalyst side, disconnect
the catalyst supply line from the inlet manifold
of Pump B, and connect a regulated solvent
supply line.
• Multiple color/multiple catalyst system:
Connect regulated solvent supply lines to
the designated solvent valves on the color
and catalyst valve manifolds. Do not connect
solvent supply lines directly to the inlet
manifolds of the pumps.
3. Set the solvent supply pressure regulator at the
lowest pressure possible, to avoid splashing or
an injection injury. Generally a setting of 25–50
psi (0.18–0.35 MPa, 1.8–3.5 bar) is sufficient.
4. Set the mix manifold to the SPRAY position.
5. On the ADM, go to the Fill screen. Select Color
(A). Enter the color number in the box to the right.
6. Select the Flush Line box.
7. If the solvent is not already loaded, press the
Prime softkey
solvent into the selected pump and out the outlet
dump valve.
8. Press the Fill softkey
the selected Color (A) line with solvent until the
user presses Stop
9. Hold a metal part of the gun firmly to a grounded
metal pail. Trigger the gun until clean solvent
dispenses.
10. Repeat for each color line.
11. Relieve the pressure.
Pressure Relief Procedure, page
See
29.
. The system will prime
. The system will flush
.
See
29.
332562B