Emerson UVU-140A Start UP and Test, Start up Procedure, Check Out Procedure, Automatic vi Test

Table 3 - Coil and Relay Status

COIL AND RELAY SETTINGS TABLE

	Switch 1	Switch 2
De-energized and	ON	ON
non-latching
Energized and non-	ON	OFF
latching
De-energized and	OFF	ON
latching
Energized and	OFF	OFF
latching

CHAPTER 3 START UP AND TEST

Start up Procedure

NOTE:

Be sure that the detector is correctly aimed at the potential hazard and that no obstructions interfere with its line of vision. UV absorbing gases should not exist between the detector and the potential hazard.

Check Out Procedure

CAUTION:

When testing the system, be sure to secure all output devices to prevent unwanted activation of equipment and remember to place the same devices back into service when the check-out is complete.

Automatic vi Test

NOTE:

The automatic vi system continuously monitors the operation of the detector. However, it is important that the system be manually checked using the MANUAL check procedure (described on page 12) on a regular basis. The whole system (including external equipment) should be checked periodically using a UV test lamp to simulate a fire.

The detector performs an automatic vi test every 30 seconds. If the automatic vi test fails, the

UVU-140-A or UVU-140-AR current output will decrease to 2mA indicating a dirty window or other obstruction in front of the detector tube. The UVU-140-A or UVU-140-AR current output will remain at 2mA until the problem is corrected. If the obstruction was only temporary, the detector will return to normal operation with a current output of 4mA the next time the automatic vi test is successful.

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