Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 676 / 1956

Trouble Cause Remedy
PAGE 2
Feb 28/07 30-10-00
3I12
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
Deicers do not inflate. Open circuit breaker. Push circuit breaker
Engine operating at to reset.
minimum cruise RPM.
System connection loose Tighten or repair as
or wire broken. required.
Timer not functioning. Test or replace as
required.
Pressure regulator valves not Make electrical test.
functioning. Check for sticking
poppet. Clean. Ensure
that both vent ports on
solenoid valves are open.
Lines blocked or not Blow out lines and
connected. inspect connections.
Make air leakage test.
Deicers do not inflate Pressure regulator valves Remove and clean.
or inflate slowly. clogged.
Deicers inflate slowly Lines partially blocked Blow out lines and
(normal time - 6 seconds). or not connected securely. inspect connections.
Make air leakage test.
Deflate solenoid valves not Ensure that both vent
functioning properly. ports on solenoid are open.
System pressure not Check performance to
being reached. manufacturer’s
specifications.
Deicer puncture. Repair per specification
or replace.
Deicers deflate slowly. Lines partially blocked. Inspect and blow out lines.
Deflate solenoid valve not Ensure that both vent
functioning properly. ports on solenoid are open.
CHART 1 (Sheet 1 of 2)
TROUBLESHOOTING PNEUMATIC DEICE SYSTEM