Maintenance
Mini-Convectron Module Instruction Manual - 275513 51
4.4 Convectron Gauge Removal and Replacement
4.4.1 Removing the Convectron Gauge
To avoid contaminating the Convectron gauge, wear sterile gloves during the removal procedure.
1. Vent the vacuum chamber to atmospheric pressure and shut OFF power to the module.
2. Use the fitting to detach the module from the vacuum chamber.
3. Remove the four Phillips-head screws from both module end plates, but do not remove the hex
nuts that hold the D subminiature connector in place.
4. Remove the end plate that does not have a connector, then remove both sides of the housing.
5. Carefully unplug the Convectron gauge from the spring-loaded sockets in the printed circuit
board.
4.4.2 Replacing the Convectron Gauge
To avoid contaminating the Convectron gauge, wear sterile gloves during the replacement
procedure.
1. Shut OFF power to the module.
2. Align the gauge pins so they mate with spring-loaded sockets in the printed circuit board.
Carefully insert the Convectron gauge pins into the sockets.
3. Position the end plates and put both halves of the housing into place, making sure the gauge
grounding springs and cradles are in line with the gauge envelope.
4. Re-install the Phillips-head screws into the end plates.
5. Use the fitting to re-attach the module to the vacuum chamber.
Safety Precautions
Removing or replacing the Convectron gauge in a high-voltage
environment can cause an electrical discharge through a gas
or plasma, resulting in serious property damage or personal
injury due to electrical shock.
Vent the vacuum chamber to atmospheric pressure and shut
off power to the module before you remove or replace the
Convectron gauge.
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