The visual integrity test and the count test are performed at the same time.

1.Place the controller in the bypass mode (all outputs inhibited) by keeping the MENU/SET switch activated until ‘Chc’ ‘Err’ or ‘bPS’ are shown on the digital displays. Release the switch and activate it again until ‘bPS’ is shown on the right side of the display, then activate the SELECT/RESET switch. The right digital display will show ‘Chn’ and the left side of the digital display will show ‘bPS’.

2.Activate the MENU/SET switch again to toggle through the available channels. W hen the desired channel is shown on the left side of the display, activate the SELECT/RESET switch.

3.W hile in the bypass mode, the right side of the display will show the counts per second produced by the background UV in the detector’s range of vision. Activating the SELECT/RESET switch will perform the manual vi test, a significant increase in the count displayed should be observed. (Counts should be greater than 150 and less than 400. If the counts read are not with in this range the lens and reflector need cleaning or the vi adjustment allen screw the sensor on module needs to be repositioned (only available on tube modules with aluminum shroud.)

4.To exit the bypass mode, activate the MENU/SET switch repeatedly until ‘test’ is shown on the left side of the display. Now activate the SELECT/RESET switch.

NOTE

The Automatic vi system continuously monitors the operation of the detector but does not monitor external relays or equipment that may be operated from the relay outputs. It is important that the system be manually checked using the MANUAL check procedure on a regular basis. The whole system (including external equipment) should be checked periodically using a UV Test Lamp to simulate a fire.

MANUAL CHECK PROCEDURE

The whole system should be checked periodically with a UV test lamp to make sure that the detectors are not obstructed, that the area ‘seen’ by the detector has not changed and that there is no fault in the vi circuit.

1.Place the channel to be tested in bypass mode as described in the ‘MAIN MENU’ section of this manual.

2.Direct the UV test light into a detector viewing window. The counts per second displayed on the right display should increase to an alarm level.

3.Turn off the UV source.

4.Repeat the test for all detectors in the system.

5.After all detectors have been checked, return the system to the normal operating mode.

6.Restore power to output loads or remove any mechanical blocking devices.

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Emerson MAN -0016-00, UVC120 manual Manual Check Procedure
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0016-00, UVC120, MAN -0016-00 specifications

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