| Grey Backdrop |
| Bleed Air Panel 800/900 |
ISOLATION VALVE Switch
CLOSE – Closes the isolation valve.
AUTO –
OPEN – Opens the isolation valve.
CLOSE – Closes the isolation valve.
AUTO –
- Closes the isolation valve if both engine BLEED air
switches are ON and both air conditioning PACK
switches are in AUTO or HIGH
- Opens the isolation valve automatically if either engine
BLEED air or air conditioning PACK switch is
positioned OFF.
OPEN – Opens the isolation valve.
