The Bleed Pressure Regulator Valve Control-Solenoid and what is it good for?

The bleed pressure regulated valve control solenoid (CTL SOL), located downstream from the precooler. The control solenoid operates in two modes, pneumatic and electric, causing complete closure of the PRV.
The pneumatic mode is used for:
reverse flow protection - the PRV is closed when a delta pressure between the precooler outlet and the PRV inlet is detected.
The electrical mode close PRV in case soleoid receive electrical input from operator or from Bleed monitoring Computer
What are this imputs
As operator you can close it by pressing the ENGine BLEED P/B to "OFF" and or by releasing of ENGine FIRE P/B
The solenoid is automatically energized by the BMC in the following cases:
- over-temperature downstream of the precooler - so what is that mean, the heat exchanger outlet temperature sensor senses a temperature above 257°C (527°F),
- overpressure The PRV pneumatically regulates the bleed pressure around 44 psi but when the pressure-regulated transducer senses a pressure greater than 57 psi BMC will send closing signal
leak detection in pylon/wing/fuselage ducts and surrounding areas,
APU bleed valve not closed,corresponding starter valve not closed.
You can find me on:
Instagram:
www.instagram....
tiktok:
/ zeto.r
Linkedin
/ tom%c3%a1%c5%a1-zeman-...
airbus #airbus320 #a320 #a321 #aircraft #a321neo #aircraftmaintenance #switch #howto #howitworks #aircraftmaintenanceengineer #aircraftlovers #airbuslovers #aircraftengineer #instaaviation #instaplants #aircrafttechnician #light #aviationdaily #instagramaviation #aircraftphotography #aircrafttechnician #aviationgeeks #aviationgeeksociety #aviationphotography #aviationdailyphoto