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Battery Maintenance; 10. Glossary - Siemens PAD-4 Installation, Operation And Maintenance Manual

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9.

BATTERY MAINTENANCE

Perform the following tests at the recommended
interval. Replace the battery set every four years
or if any of the test criteria are not met.
Initiation / Reacceptance
1. Charger Test—With the batteries fully
charged and connected to the charger,
measure the voltage across the battery set. It
must read 27.3V +/- 0.3V.
2. Discharge Test—With full system alarm load,
the voltage on a fully charged battery must
not fall below 20.4V after 30 minutes.
3. Load Voltage Test—With full system alarm
load, the voltage on a fully charged battery
must not fall below 24.6V after one minute.
Testing Interval
1. Semiannually—Perform the Load Voltage
Test.
2. Annually—Perform the Charger Test and
Discharge Test.
PAD-4 Installation, Operation and Maintenance Manual

10. GLOSSARY

Alarm Signal. A signal that indicates the pres-
ence of an emergency requiring immediate
action, such as an alarm for fire from a manual
station, a waterflow alarm, or an automatic
smoke detector.
Alarm System. A combination of compatible
initiating devices, control units, and notification
appliances designed and installed to produce an
alarm signal in the event of a fire.
Audible Signal. A sound made by one or more
audible notification appliances, such as bells or
horns, in response to the operation of an initiat-
ing device.
Authority Having Jurisdiction (AHJ). The
organization, office, or individual responsible for
approving equipment, installations or proce-
dures.
CO Alarm. Carbon Monoxide alarms.
Class A Circuit. An initiating device or notifica-
tion appliance circuit in which all components
remain fully functional when a single open or
ground exists in the circuit.
Class B Circuit. An initiating device or notifica-
tion appliance circuit in which some or all compo-
nents may be disabled when a single open or
ground exists in the circuit.
End Of Line (EOL). A device used to terminate a
supervised circuit.
General Alarm. A term usually applied to the
simultaneous operation of all the notification
appliances on a system.
Ground Fault. A trouble condition in which a low
resistance has been detected between the
system wiring and earth ground.
Initiating Device Circuit (IDC). A circuit to which
initiating devices are connected.
Labeled. Equipment or materials to which a
label, symbol, or other identifying mark of an
organization acceptable to the AHJ and con-
cerned with product evaluation has been at-
tached. The organization's label indicates that
the manufacturer complies with appropriate
standards, performs in a specified manner and
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