Diamond DA 42 NG, Maintenance Manual

Page: 1163 / 2339

AIRCRAFT
DA 42 NG Series
AMM
Ice Protection System
Detail Steps/Work Items Key Items/References
Doc # 7.02.15
Rev. 4
30-00-00
Page 203
15 Mar 2018
(9) Sprinkle all 7 ice protection panels with
approved de-icing fluid by using a clean, lint free
cloth.
(10) Fill the de-icing fluid tank. Refer to Section 12-10.
(11) Verify that the de-ice level indication on the
MFD shows full.
(12) Switch to the ANNUN-TEST mode on the de-ice
control panel and verify that there is no
DEICE LVL LO message in the alert window of
the PFD.
(13) Set ICE LIGHT / ANNUN-TEST - switch to OFF.
Windshield Spraybar Check
(14) Verify that the canopy is closed.
(15) Check that each hole on the canopy spraybar
emits de-icing fluid with pump 1 and pump 2:
S
Press the WINDSHIELD push-button on the
de-ice control panel for 1 second.
S
Select PUMP2 on the de-ice control panel.
S
Press the WINDSHIELD push-button on the
de-ice control panel for 1 second.
Repeat procedure until de-icing fluid
emits from all holes in the spraybar.
Repeat procedure until de-icing fluid
emits from all holes in the spraybar.
(16) If the check described in the previous step was
not successful, then shortly apply high air
pressure to blocked holes of the spray bar and
repeat the check procedure.
Main De-Ice Panel Test
(17) Verify that the Pump-Selector switch on the
de-ice control panel is in PUMP 1 position.
(18) Open canopy and set the OFF/NORM/HIGH
switch to the HIGH position and check operation
of the annunciation light on the de-ice control
panel.
(19) Check all ice protection panels for evidence of
de-icing fluid.