Welcome to Cockpitbuilders.com. Please login or sign up.

May 12, 2021, 10:00:10 PM

Login with username, password and session length

PROUDLY ENDORSING


Fly Elise-ng
23 Guests, 1 User
Members
  • Total Members: 4032
  • Latest: vasekg
Stats
  • Total Posts: 57033
  • Total Topics: 7596
  • Online Today: 31
  • Online Ever: 582
  • (January 22, 2020, 08:44:01 AM)
Users Online
Users: 1
Guests: 23
Total: 24

COUNTDOWN TO WF2021


WORLDFLIGHT TEAM USA

Will Depart in...

Recent

Welcome

I'm puzzled - what is this switch REALLY doing?

Started by vidarf, June 29, 2012, 01:20:17 PM

Previous topic - Next topic

0 Members and 1 Guest are viewing this topic.

vidarf



Hmm.... "Equipment cooling".. And "Exhaust"...  :o

wledzian

It selects power for the blowers that cool the flight deck instruments and EE Bay electronics.

If the switch is in 'Normal', the primary blower comes on when ground power is applied, but is otherwise off.

If the switch is in 'Alternate', the alternate blower comes on whenever the aircraft 115v bus is powered.

The plenum drawing cooling air over the electronics is fed by cabin air, with vacuum provided by the cabin air recirculating system, or simply exhausted overboard if the CARS is inactive, during flight.

vidarf

Wayne, check which section this thread is posted under... :D :D :D

wledzian

Ah, sorry if I spoiled the joke - I got here from the 'recent posts' list on the right side, and just happened to have that page of the system schematics open on my desk for a different issue related to other systems on the ground power bus.

vidarf

You didn't, my friend. :) I figured the "recent posts" list was the culprit. :)

Like the Website ?
Support Cockpitbuilders.com and Click Below to Donate