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

Page: 677 / 1956

PAGE 3
Feb 28/07
30-10-00
3I13
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
Trouble Cause Remedy
Deicers inflate, indicator Indicator lamp burned out. Replace lamp.
light does not function.
(Check that deicer boot
switch is ON.)
System pressure not Check “Deicers Inflate
being reached. Slowly” above.
Pressure regulator valve Make electrical test
switch not functioning. and replace if required.
Wires loose or broken. Make electrical test.
Repair or replace
broken wires.
Poor grounding of Check for
pressure regulator valve proper ground.
switch.
Deicer boots do not Deflate valve not Remove and trouble-
hold their form in functioning properly shoot valve. Replace
flight or vacuum to if necessary.
the system is inadequate.
Vacuum line restricted. Disconnect line from
instruments, deflate
valve, and blow out line.
Broken line. Inspect system and repair.
CHART 2 (Sheet 1 of 2)
TROUBLESHOOTING PNEUMATIC DEICE SYSTEM
D. Vacuum Manifold/Check Valve
The vacuum manifold/check valve is located aft of the forward pressure bulkhead, slightly to the
right of the airplane centerline.
(1) Removal
(a) Disconnect the three (or four) hoses from the manifold body.
(b) For the forward manifold, remove the screw which secures the manifold bracket to the
pressure bulkhead.
(c) Remove the vacuum manifold/check valve assembly.
(2) Installation
(a) Position the vacuum manifold/check valve in place.
(b) Secure the forward vacuum manifold/check valve in place with the previously removed
screws.
(c) Reconnect the three (or four) hoses to the manifold body.