Instruction Manual

Maintenance and Troubleshooting
April 2014
Instruction Manual
D103176X012
68
Removal
1. Remove the main cover.
2. Remove three screws that hold the EMI shield and remove the shield (refer to figure 6‐1).
3. Remove the three screws holding the electronics board to the mounting frame (refer to figure 6‐1).
4. Pull the main electronics straight off of the mounting frame. The board is electrically connected to an
interconnecting board with a rigid connector.
Installation
When installing a new board, follow the reverse procedure as outlined above and recalibrate the instrument. Take care
to align the rigid connector properly, and install the pressure sensor O-ring before installing the three fasteners.
Replacing the Secondary Electronics
The secondary electronics contains the wiring terminations and the feedback sensor circuitry. Additionally, any
optional electronics (limit switches and position transmitter) reside on the secondary electronics.
Note
After secondary electronics replacement, calibrate the digital valve controller to maintain accuracy specifications.
Removal
1. Remove the main cover.
2. Remove three screws that hold the EMI shield and remove the shield (refer to figure 6‐1).
3. Remove the three screws holding the electronics board to the mounting frame (refer to figure 6‐1).
4. Pull the main electronics straight off of the mounting frame. The board is electrically connected to an
interconnecting board with a rigid connector.
5. Remove the two screws holding the mounting frame to the instrument housing (refer to figure 6‐2).
6. Pull the mounting frame straight out. The interconnecting board is electrically connected to the termination board
with a rigid connector.
7. Remove the small board from the I/P converter pins.
8. Remove the interconnect board from the mounting frame.
9. Remove the three screws holding the terminal board to the housing (refer to figure 6‐1).
10. Pull the terminal board straight out of the housing.