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Figure 17
10. Battery Temp Sensor
It attaches the battery temperature probe to the unit for monitoring battery temperature. The charging voltage
is temperature dependent. The microprocessor of the smart charger adjusts the voltage for optimum
charging.
The temperature probe connector
must
be plugged in for normal operation. The sensor end should be
firmly attached to the terminal of the battery.
TIP:
If the UPS is not charging the batteries check the temperature probe. To test the
temperature probe unplug it from the face of the UPS. Check the resistance of the
temperature probe by inserting the probes of an ohm meter into the top and bottom pins of
the connector. The meter should read approximately 10,000 Ohms at 25°C (77
°F). If
resistance is not in this range, replace temperature probe.
11. Ext Fan 12VDC/24VDC or 48VDC
Provides DC Power (12VDC/24VDC or 48VDC, 1 Amp (Max)), which could be used to power an
optional DC fan, mounted inside the enclosure for regulation of the interior temperature.
12. Internal Fan
This microprocessor-controlled fan regulates the unit’s internal temperature. It must not be blocked.
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