3500/42 Operation and Maintenance
Maintenance
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5. Set the proportional value that the recorder is configured for to bottom-scale.
Verify that the recorder output is reading 4 mA
±
1 %.
6. Disconnect transducer input and verify that the recorder output is matches the
set monitor clamp value
±
1 %.
7. If you can not verify the recorder output, the recorder configuration and
connections should be checked. If the monitor recorder output still does not
verify properly, go to Section 5.1.11 (If a Channel Fails a Verification Test).
8. Disconnect the multimeter and reconnect the COM and REC field wiring to
the channel terminals on the I/O module.
9. Repeat steps 1 through 8 for all configured recorder channels.
5.1.11 If a Channel Fails a Verification Test
When handling or replacing circuit boards, always be sure to adequately protect
against damage from Electrostatic Discharge (ESD). Always wear a proper wrist
strap and work on a grounded conductive work surface.
1. Save the configuration for the module using the Rack Configuration Software.
2. Replace the module with a spare. Refer to the installation section in the 3500
Monitoring System Rack Installation and Maintenance Manual (part number
129766-01).
3. Return the faulty board to Bently Nevada Corporation for repair.
4. Download the configuration for the spare module using the Rack
Configuration Software.
5. Verify the operation of the spare.
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