Specifications

9-1
SECTION 9: ANNUAL TEST
FOR UL 294 SYSTEMS
After a UL 294 approved system is installed, and annually thereafter, the following system test
must be conducted to ensure proper operation. The STATUS and REPORT commands will be
useful in verifying system operation.
To perform the SE 818SC annual system test, proceed as follows:
1. Visual Inspection
Inspect all connectors, wiring, and cables on all devices in the system for looseness,
damage, or wear; replace as required.
2. AC Input Power Check
Measure the AC input power and verify it is within 10% of the specified rating for the power
supply.
3. DC Power Check
Check the S-Net DC power at the supply.
With all network devices operating, check for adequate voltage at each device.
4. Battery Check
Inspect backup battery for cracks, warping, corrosion, etc.; replace if damaged.
With AC power applied to the power supply and the power supply turned on, measure the
voltage at the backup battery between TP4 (ground) and the + terminal to verify that it is
between 24 and 28 VDC.
Disconnect AC power to power supply and verify that system is still operational. Check only
the portions of the system that are powered from the backup battery. Restore AC power to
power supply. The battery voltage should not drop below 24 VDC.
5. SE 818SC ACU Check
Verify operation of all LEDs on the front panel.
Visually check all fuses.