Communication Server Large System Installation and Commissioning

Page 338 of 456 Performing acceptance tests
NN43021-310 Standard 02.01 December 2007
3 Use a screwdriver to loosen the retaining screws at the front of the blower
unit (see Figure 117 on page 339) and pull the unit out until it is
disconnected from the pedestal.
Note: Do not pull the unit all the way out of the pedestal.
• The column LED should light.
4 Reinstall the blower unit and tighten the retaining screws.
• The column LED should go out.
• The system terminal should display PWR0046.
5 Heat one of the two thermal sensors under the top cap of the column with
a hand-held hair dryer or similar heat source.
• The column LED should light.
• Thirty seconds after the thermal sensor detects 70 degrees C
(158 degrees F), the main circuit breaker, or the blower unit circuit
breaker, at the rear of the pedestal should trip. The system terminal
should display PWR0004, PWR0006, and PWR0007.
6 Allow the sensor to cool, then reset the circuit breaker in the pedestal. If
a sysload occurs, allow it to complete.
• The column LED should go out.
• The system terminal should display PWR0044, PWR0046, and
PWR0047.
7 Repeat step 5 and step 6 for the other thermal sensor.
End of Procedure