Graco HydroShield WABH00, Instructions - Parts Manual

Page: 93 / 142

Repair
Adjust Adjust Adjust the the the Isolation Isolation Isolation Valve Valve Valve Sensors Sensors Sensors
When disassembling the isolation valve, you may
have indicated the positions of the top and bottom
valve sensors. If the positions were not indicated,
use this procedure to determine the positions of the
sensors.
1. Loosen nuts (104) and position the sensor (103)
so that the face touches the air cylinder body.
Tighten nuts (104).
2. Determine the location of the top sensor:
a. On the control interface, enter Off mode.
Navigate to the Status menu.
b. Raise the isolation valve to the top position.
c. Position the sensor and watch the Status
menu. When the Shuttle Top circle changes
from gray to yellow, attach the clamp in that
position.
3. Determine the location of the bottom sensor:
a. On the control interface, enter Standby
mode. Standby mode drives the isolation
valve to the bottom position.
b. Position the sensor and watch the Status
menu. When the Shuttle Bottom circle
changes from gray to yellow, attach the
clamp in that position.
Figure 32 Isolation Valve Sensor Position
on Status Menu
Replace Replace Replace an an an Isolation Isolation Isolation Valve Valve Valve Sensor Sensor Sensor
The isolation valve sensor can be replaced while the
isolation valve is in the cabinet or while it is removed
for service.
1. Remove the sensors from the isolation valve:
a. Loosen the top clamp (101) and slide sensor
bracket (102) free of the clamp.
b. Loosen the bottom clamp (101) and slide
sensor bracket (102) free of the clamp.
2. Disconnect the sensor wires from the splitter
cable (447) inside the electronic control. See
Wiring Connections, page 112 .
3. Install the replacement sensor (103) or sensor
assembly kit 26B102.
4. Connect sensor wires to splitter cable
(447) inside the electronic control. See
Wiring Connections, page 112 .
5. Adjust the isolation valve sensors.
Disassemble Disassemble Disassemble the the the Isolation Isolation Isolation Valve Valve Valve
Components Components Components
Use this procedure to disassemble the air cylinder
(227), block mount (224), connecting rods (225),
shuttle housing (218), and base housing (201).
1. Prepare the isolation system for service. See
Prepare the Isolation System for Service, page
90
.
2. Remove the isolation valve from the cabinet. See
Remove the Isolation Valve from the Cabinet,
page 91
.
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