ESPRIT Gas Extinguishing User Manual
INSTALLATION
20
Approved Document Ref: UI-ESG-01 Issue 2.0
Battery Charging Voltage Checks
The battery charging voltage is factory calibrated to 27.3VDC +/- 0.2V at 20
°
C. This should not normally
require adjustment. Where battery problems are experienced, the following information should be
considered.
Quiescent current and alarm current details for standby battery calculations:
a) If a battery is disconnected from the charger, no voltage will appear on the output leads or
terminals, due to intelligent battery controls.
b) Check the power supply voltage at the PSU supply input terminals. With the batteries disconnected
the voltage should be 29.0VDC +/- 0.2V.
c) To test the batteries, turn off the mains and see if the system will run on the batteries. Check the
battery voltage, which should be 26.8V for a good battery or 22V for a flat battery.
d) The power supply voltage can be adjusted using the potentiometer on the power supply module,
checking at the 28V & 0V output terminals with a calibrated voltmeter. Batteries should be
disconnected and the Access Level 3 DIL switch shoul
d be set to ‘ON’, which will override the
temperature compensation controls. Carefully adjust the voltage to 29.0VDC +/- 0.2V. When
completed, switch off Access Level 3 DIL switch and re-connect the batteries.
e) When the panel is re-charging a low battery, it should be possible to see the voltage across the
batteries increase gradually. If this is not occurring, the batteries or the panel may be faulty.
Battery Charging Voltage Calibration
Should the battery charging voltage require calibrating (i.e. following replacement of the main board),
proceed as follows:
•
Turn
Activate Controls
key clockwise to
On
or
•
Use the keypad to enter Authorised User (Access level 2) code 1111:
o
Press
✓
key
o
Use Up/Down arrow keys to increase/decrease the number value
o
Use Left/Right arrow keys to move to the next digit in the 4-digit sequence
o
When all 4 digits have been set to the code 1111, press the
✓
key again
•
The
Main Menu
will become available for operation
•
On the
Main Menu
, use Left/Right arrow keys to move cursor box to
Report
menu
•
Press Enter
✓
key to select the
Report
menu
•
Under
Report Menu
, use Left/Right arrow keys to highlight the
BATTERY
option, and then
press Enter
✓
key to select it
•
BATTERY STATUS
menu will display the following:
TEMPERATURE: nn.nn
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