Pneumatic Relay - Fisher FIELDVUE DVC6200f Instruction Manual

Maintenance and Troubleshooting
July 2013
2. Properly orient the PWB assembly (key 50) as you install it into the module base. The two electrical leads from the
I/P converter (key 41) must guide into their receptacles in the PWB assembly and the pressure sensor bosses on the
module base must fit into their receptacles in the PWB assembly.
3. Push the PWB assembly (key 50) into its cavity in the module base.
4. Install and tighten three screws (key 33) to a torque of 1 NSm (10.1 lbfSin).
5. Reassemble the module base to the housing by performing the Replacing the Module Base procedure.
6. Setup and calibrate the digital valve controller.
Note
Calibration is required for either Travel or Pressure Control after PWB Assembly replacement.
Note that only one calibration is needed, depending on control selection.

Pneumatic Relay

Refer to figure 8‐2 or 8‐4 for key number locations. The pneumatic relay (key 24) is located on the front of the module
base.
Note
After relay submodule replacement, calibrate the digital valve controller to maintain accuracy specifications.
Removing the Pneumatic Relay
1. Loosen the four screws that attach the relay (key 24) to the module base. These screws are captive in the relay.
2. Remove the relay.
Replacing the Pneumatic Relay
1. Visually inspect the holes in the module base to ensure they are clean and free of obstructions. If cleaning is
necessary, do not enlarge the holes.
2. Apply silicone lubricant to the relay seal and position it in the grooves on the bottom of the relay as shown in
figure 7‐5. Press small seal retaining tabs into retaining slots to hold relay seal in place.
Figure 7‐5. Pneumatic Relay Assembly
RELAY SEAL
W8074
240
Instruction Manual
D103412X012