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voltage is present. Also, the interlock switch can be defeated by pulling the switch
pin up. This should only be done by trained HunterLab service personnel, and
should never be done if the lamp circuit is to be touched in any way.
4. Remove the three screws on the top of the optics tube on the left side of the sensor. Lift off the top
section, which houses the lamp assembly.
5. Disconnect the two sets of connectors to the lamp module.
Lamp module
connectors
6. Replace the entire lamp module.
Note: Do not touch the lamp with your bare hands. If necessary, use white cotton gloves to handle
the lamp.
7. Reassemble the sensor by reversing the steps described here. Reattach the cover ground strap if it
was removed.
8. Allow the system to warm up for one hour.
11/02
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Maintenance
Optic tube screws
4-3
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