Sentry CR105 Manual download pdf (Page 25)

U7698E Flame Detector

Part 334614E

E 2002 Nordson Corporation

Manual 34-49

Repair

WARNING: Allow only qualified personnel to perform the following tasks.

Follow the safety instructions in this document and all other related

documentation.

WARNING: Disconnect and lock out electrical power before servicing.

Sensor and Electronics Module Replacement

Removing the Old Sensor and Electronics Modules

See Figure 8.

1. Turn off power to the detector heads by turning off power to the system.

2. Disconnect the air tubing (1) from the air fitting (2).

3. If desired, loosen the socket-head screws (4) and remove the air

shield (3) from the sensor housing (5).

4. Unscrew the sensor housing from the upper housing (8).

5. Disconnect the harness connector (7) from the sensor module (6), and

remove the sensor module from the upper housing.

6. Unscrew the lower housing (12) from the upper housing.

7. Loosen the mounting screws and unplug the electronics module (11)

from the connector board (not shown) in the upper housing.

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Sentry CR105 Manual Page 25