Bently Nevada 125388-01H Main module backplane

Description

This procedure applies only to the I/O module of a monitor or the PIM of a power

supply that is to be replaced. Prior to removing any module, refer to the

applicable reference manual to see how rack behavior may be affected and for

any special handling requirements required for personal safety.

1. If necessary, upload and save the configuration of the module to be replaced.

3500 modules must have valid configuration settings in order to operate

properly. Replacement modules are not configured. By saving the

configuration, you can download the original configuration settings to the

replacement module.

The 3500 Monitoring System Configuration and Utilities Guide, part number

129777-01, shows how to save configuration files.

2. Remove the main module from the rack.

Refer to Removing and inserting a main module on page 24.

3. Remove the field wiring from the I/O module.

If the wires connected to the I/O module are not labeled, label the wires

before you remove them.

4. Remove the old I/O module from the rack.
5. Install the new I/O module into the rack.
6. Connect the field wiring to the new I/O module.
7. Install the main module into the rack.

Refer to Removing and inserting a main module on page 24.

8. Download the configuration to the new module.

The 3500 Monitoring System Configuration and Utilities Guide, part number

129777-01, shows how to download configuration files.

9. Verify operation.

Check that the LEDs for the replaced module are indicating correct

operation (see Reading the LEDs on page 16.

– The values of the measurement parameters of a channel are verified by

using the Verification untility in the 3500 Rack Configuration program and

the verification procedure in the reference manual for that module.

Removing and inserting a main module

When performed properly, modules may be removed from or installed into the

rack while power is applied to the rack.

To remove the old full-height module

This procedure shows how to remove any full-height 3500 module. Refer to the

reference manual for the module for details and safety considerations.

1. Loosen the screws to the main module so that they are free of the rack

chassis, but still attached to the main module.

2. Use the ejectors to pry the main module loose from the backplane

connectors.

3. Once freed from the backplane, the main module can be removed completely

from the rack

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