7
Maintenance / Repair
Testing the line tester
64
Building Technologies
008250_i_en_--
Fire Safety
2013-08-15
7
Maintenance / Repair
7.1
Testing the line tester
The FDUL221 line tester is set in the factory. This setting cannot be changed by
the user.
During the selftest the settings are tested automatically, by electronically
connecting and measuring reference resistances in the different configuration.
Calibration may also be checked manually.
7.1.1
Selftest
The selftest is not possible in 'EL' operation mode. In this case, change the
operation mode. See chapter: 'Firmware update [ 69]'.
A measuring cable is required for testing.
The FDUL221 line tester is connected to a power supply.
1. Press the button and switch the FDUL221 line tester on at the same time.
The display shows 'LineTester Config'.
2. Navigate to the 'Selftest' sub menu.
3. Perform the tests according to the information in the display.
The corresponding test result is displayed.
4. To acknowledge a successful test, press the button 'PASS'.
You are taken to the next test.
5. If the test is not successful, press the button 'FAIL'.
You are taken to the previous test.
6. Connect the cable according to the instructions during testing. The connections
for the detector lines and ground wire/shielding are labeled accordingly.
7. Rectify the faults displayed.
8. If the fault 'Cablin/Fuse' is displayed, check the cable. If the fuse is the cause of
the error, send the FDUL221 line tester for repair.
Testing procedure
Display
– 'Test Display'
– 'Black lines OK?'
LEDs
– 'Test LEDs'
– 'Red LED steady on?
– 'Green LED blinking?'
Supply
– 'Test Supply'
– 'Vbatt= .....mV'
– 'UL=.....mV'