Graco ProMix II Series, Запасные части, Страница: 21 / 40

Service
◆
Smart Fluid Panel
310653D 21
Replacing Air Flow or Pressure
Switch
1.
Follow Preparation procedure, page 19, and shut
off power at main circuit breaker.
2.
Air Flow Switch (702): Disconnect wires from
connector (V). F
IG
. 17.
Pressure Switch (717): Disconnect wires from
switch, noting their connection points. F
IG
. 17.
3.
Air Flow Switch (702): Unscrew nut from fitting
(704a), and remove assembly from enclosure.
Remove fittings from air flow switch (702).
Pressure Switch (717): Unscrew bushing (716)
from fitting (704b). Remove bushing from pressure
switch (717).
4.
Apply pipe thread sealant to new air flow or
pressure switch threads and install.
5.
Reconnect wires that were disconnected in step 2.
6.
Reassemble Smart Fluid Panel (page 22).
Replacing Solenoids
The Smart Fluid Panel has a minimum of 4 solenoids. If
you have a color change valve option installed, you have
additional (optional) solenoids for each additional color.
Refer to
Pneumatic Diagram , page 30.
To replace a single solenoid.
1.
Follow Preparation procedure, page 19, and shut
off power at main circuit breaker.
2.
Disconnect 2 solenoid wires (N) from control board
(706). F
IG
. 17.
3.
Unscrew 2 screws (P) and remove solenoid (712).
4.
Install new solenoid (712).
5.
Connect 2 wires (N) to control board (706).
Solenoid wires are polarized (red +, black –). Refer
to
ProMix™ II Electrical Schematic , page 31.
6.
Reassemble Smart Fluid Panel (page 22).
The air flow switch (702) detects whether there is
atomizing air flow to the gun (gun is triggered).
The pressure switch (717) detects if a gun is in the
gun flush box with the box door closed.
Switch wires are not polarized.
Solenoid Actuates
Standard
1 Dispense Valve A
2 Dispense Valve B
3 Air Purge Valve A
4 Solvent Purge Valve B
Optional
5 Gun Flush Box Pilot Valve
6 Color Change Solvent Valve
7 Color Change Valve 1
8 Color Change Valve 2
9 Color Change Valve 3
10 Color Change Valve 4
11 Color Change Valve 5
12 Color Change Valve 6
F
IG
. 17
717 V
706
704a
716
704b
N
P
712
6
5
4
3
2
1
12
11
10
9
8
7
TI4875
702