Brooks Firetracker FT420, Техническое руководство

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Technical Manual
FT420
– Iss 2.4
70
Figure 38 Power Supply Trimpot Location
5.1.2 Visual Inspection and Field Wiring Termination
Note: Prior to any field wiring connection, check the panel operation and ensure the correct
operation before terminating any field wiring. Only the “Mains On” green LED should be ON.
All cable terminations should be visually inspected and incorrect wiring should be rectified before
commencing testing. Check that all quick connect plugs are properly inserted.
•
If initial check is satisfactory, disconnect the batteries and switch the mains power off.
•
Check all field cables and detector connections for correct polarity. The detectors and voltage
outputs are polarity conscious. Therefore, care must be taken to ensure correct termination of
all wires.
•
Check that End of Line resistors are fitted to the last detector base in the zone circuit and the
last device of each supervised input / output circuit. If the OWS is fitted, install the EOL
resistor in the last speaker in the speaker circuit.
•
Carryout the relevant resistance check as per Table 43 page 71.
•
Check that all jumpers and DIP switches are set correctly. Refer to Table 15 on page 27.
5.1.3 Connection of Field Wiring
Field wiring should be connected one portion at a time. This assists to identify any cabling / termination
problem which would lead to a fault on the system.
After terminating all the field wiring, commence testing the system as configured.