FireSwitch108
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Step 3. EOL Resistor Value Programming
a . Depress the joystick three (3) times from Stand-by screen, or two (2) times from Function Screen,
or one (1) time from Protocol screen .
b . Use [Up/Down] to select the appropriate value (see chart below) .
c . Use [Left/Right] to select the output .
Programmed Digit
0
1
2
3
4
5
6
7
Resistor Value
2 .2K
2 .8K
3 .9K
4 .7K
5 .1K
10K
22K
43K
Step 4. Read/Clear Trouble Memory
a . Depress the joystick three (3) times from Stand-by screen, or two (2) times from Function Screen,
or one (1) time from Protocol screen .
Trouble Memory LCD Indication:
LCD Legend
Trouble Condition
A
AC trouble .
B
Battery trouble .
C
Common trouble .
N
Normal operating condition .
O
Loop open or open circuit .
S
Loop Shorted .
G
Loop Ground fault .
?
Loop wiring is incorrect .
b . Use [Down] to reset all stored troubles .
Step 5. AC and Battery Trouble Reporting and Sounder Alert Options
a . Depress the joystick four (4) times from Stand-by screen, or three (3) times from Function Screen,
or two (2) times from Protocol screen, or one (1) time from Trouble Memory screen .
b . Use [Up/Down] to select/de-select reporting option .
c . Use [Left/Right] to select AC/BAT/ALERT or to enable/disable AC and BAT trouble and ALERT sounder .
d . Use [Up/Down] to select the appropriate End of Line Resistor value
(2 .2K, 2 .8K, 3 .9K, 4 .7K, 5 .1K, 10K, 22K, 43K) .
e . Depress the joystick to exit .
Note: AC and BAT trouble and ALERT sounder are factory enabled .
Testing and Maintenance:
Unit should be tested at least once a year for the proper operation as follows:
Output Voltage Test:
Under normal load conditions, the DC output voltage should be checked for proper
voltage level .
Battery Test:
Under normal load conditions check that the battery is fully charged, check specified
voltage both at battery terminal and at the board terminals marked [– BAT +] to
ensure that there is no break in the battery connection wires .
Note:
Expected battery life is 5 years; however it is recommended changing batteries in
4 years or less if needed .
Test operation of unit as follows:
Ground fault test:
Directly short one leg of the circuit to chassis ground .
The ground fault and trouble fault should be indicated .
NAC open circuit test:
Remove the EOL resistor from the last device on the circuit .
Open trouble should be indicated .
NAC short circuit test:
Place a short across each NAC output individually . NAC short should be indicated .
Disconnect Battery:
BAT trouble should be indicated .
Reset Trouble Memory.
