Rmc-Env (Power/Fan Sensors) - Avaya S8700 Maintenance Manual

RMC-ENV (Power/Fan Sensors)

RMC-ENV (Power/Fan Sensors)
MO's Name (in
Alarm Log)
RMC-ENV
The AC Power Supply (650A) for a S8700 IP Connect rack-mounted cabinet
supports one alarm lead that indicates the state of both the power and fan. The
cabinets use variable-speed fans to reduce noise. The power unit contains
thermal speed control. A 3-pin connector on the variable-speed fan assembly
accepts variable input power to control its fan speed and power its alarm circuitry.
Table 8-432
Table 8-432. LED and Alarm Conditions
Condition
Normal
No input power
DC output not present
(except neon)
Fan alarm
Fan Removal and Replacement
!
WARNING:
You can remove the fan assembly while the system is running, but you must
replace the new assembly within 60 seconds to avoid a thermal overload.
1. Place the new fan assembly close to the RMC.
2. Loosen the thumb screws on the fan assembly, and pull it straight out
(unplug it) as shown in
disconnects when the assembly is unplugged.
3. Plug in the new fan assembly. The power for the fan automatically
connects when the fan assembly is plugged in.
4. Tighten every thumb screw on the fan assembly.
555-233-142
Alarm Level Initial Command to Run
MAJOR test environment
shows the LED and alarm conditions.
LED Status
Red off,
amber on
Red off,
amber off
Red on,
amber off
Red on,
amber on
Figure
Full Name of MO
Power/Fan Sensors
Alarm State Fan/Power Alarm
Open Normal
Closed No input power
Closed DC output not present
(except neon)
Closed Fan/Power alarm
8-38. The power for the fan automatically
Issue 1 May 2002 8-1013