User Manual

Power Cabinet Initial Power Up – continued

PRELIMINARY 2

SC 4812ET BTS Optimization/ATP – CDMA LMF

July 1999

2-12

Table 2-15: Multiple Rectifier Failure or Major Alarm

Step Action

4 Turn the AC breaker for this shelf ON. Verify that all alarms have cleared.

5 Return all rectifier module to their original location. This completes the rectifier alarm tests on the

Power Cabinet.

Battery Over Temperature

Alarm (Optional ONLY)

Use special care to avoid damaging insulation on cables, or

damaging battery cases when using a power heat gun.

CAUTION

Table 2-16 gives instructions on testing the battery over temperature

alarm system.

Table 2-16: Battery Over Temperature Alarm

Step Action

1 Use a low powered heat gun and gently heat the battery over temperature sensor. Do Not hold the

hot air gun closer than three (3) inches to the sensor. This will avoid burning the cable insulation.

2 When the sensor is heated to approximately 50° C, a battery Over Temperature alarm is generated.

NOTE

An auditable click will sound as K1 contacts engage and K2 contacts disengage.

3 Visually inspect the K1 and K2 relays to verify state changes. The LMF should be displaying

correct alarms. Alarm condition will be reported as BTS–22 contact.

4 Verify that the CHARGE DISABLE LED (amber) on the DMAC and the BATTERY MAIN LED

(green) are both illuminated.

5 Switch the hot air gun to cool. Cool the sensor until the K1 and K2 contact return to normal

position (K1 open and K2 closed). Using the LMF verify that all alarms have cleared.