Sensor Element Replacement. OTIS OI-315 TOCSIN3

 

 

1.

Remove the five machine screws located on the rear cover of the device.

2.

Separate the rear cover from the front cover by gently pulling them away from each other.

3.

Using your thumb and forefinger, pull the battery out of the terminal board.

4.

Slide a new battery into the terminal board.

5.

Verify that the “+” and “-” sides of the battery are facing the correct direction

(and touching the battery contacts on the terminal board).

6.

Place the front and rear covers together, then replace the five machine screws.

Sensor Element Replacement

Sensor replacement is recommended every two years (or whenever the “X” icon appears on the display indicating that either the automatic sensor test on start-up, or the “fresh air” calibration process, has failed).

Required Items:

• Phillips-head Screwdriver

• Replacement Sensor Element = Senko SS series

• Replacement Filters

NOTE: Replacement of components can hinder intrinsic safety function.

NOTE: Replacement sensor elements should be purchased from the same retailer that the device was originally purchased from.

NOTE: The device must be recalibrated following battery or sensor element replacement.

NOTE: Before disassembling, power off the device according to the instructions in this operation manual.

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4

5

6

7

1

2

3

8

9

Label

Calibration cap

Front cover

Sensor element

PCB (terminal board)

Battery

Rear cover

Belt clip

Machine screw

1.

Remove the five machine screws located on the rear cover of the device.

2.

Separate the rear cover from the front cover by gently pulling them away from each other.

3.

Carefully separate the PCB (terminal board) from the front cover.

4.

Using your thumb and forefinger, gently pull the sensor element off of the terminal board.

5.

Align the sensor element prongs of a new sensor element with the eyelets on the terminal board. Slide the senor element into place.

6.

Place the terminal board back into the front cover.

7.

Place the front and rear covers together, then replace the five machine screws.

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