AIRCRAFT
Ice Protection System
DA 42 NG Series
AMM
Page 214
15 Mar 2018
30-00-00
Doc # 7.02.15
Rev. 4
9. Purge the De-Icing System
Purging is required when part of the active area of one or more porous panels fails to dissipate fluid.
Detail Steps/Work Items
Key Items/References
Open the small inspection panels on the
outboard side of the proportioning unit.
To give access to the proportioning
units.
(1)
Open blanking plugs on the proportioning unit.
LH and RH nacelles.
(2)
Use external pump (max. 6 bar or 87 PSI) with
filtration fitted (0.8 micrometers or 1/25,000
inch) to force de-icing fluid through the porous
panels.
LH and RH. Refer to the AFM for
approved de-icing fluids.
(3)
Close blanking plugs on the proportioning unit.
LH and RH nacelles.
(4)
Close the small inspection panels on the
outboard side of the engine nacelles.
10. Remove/Install a Proportioning Unit
A. Remove a Proportioning Unit from the Nacelle
Detail Steps/Work Items
Key Items/References
(1)
Drain the ice protection system.
Refer to Paragraph 3.
CAUTION:
YOU MUST MARK THE HOSES AND PORTS SO THAT YOU CAN
RE-CONNECT THE HOSES TO THE CORRECT PORTS ON THE
PROPORTIONING UNIT. IF YOU DO NOT RE-CONNECT THE
HOSES CORRECTLY, THE SYSTEM WILL NOT WORK PROPERLY.
(2)
Remove the bolts, washers and the spacer
holding the proportioning unit.
Hold the proportioning unit.
(3)
Remove the locking wire from the hose
connections to the filter element.
(4)
Disconnect all hose connections from the
proportioning unit.
Use caps to protect the loose line
connections from contamination.
(5)
Move the proportioning unit clear of the airplane.
Summary of Contents for DA 42 NG
Page 933: ...AIRCRAFT DA 42 NG AMM Fuel Doc 7 02 15 Rev 4 28 TITLE Page 1 15 Mar 2018 CHAPTER 28 FUEL ...
Page 1459: ...AIRCRAFT DA 42 NG AMM Lights Doc 7 02 15 Rev 4 33 TITLE Page 1 15 Mar 2018 CHAPTER 33 LIGHTS ...
Page 1711: ...AIRCRAFT DA 42 NG AMM Doors Doc 7 02 15 Rev 4 52 TITLE Page 1 15 Mar 2018 CHAPTER 52 DOORS ...
Page 1853: ...AIRCRAFT DA 42 NG AMM Wings Doc 7 02 15 Rev 4 57 TITLE Page 1 15 Mar 2018 CHAPTER 57 WINGS ...
Page 2071: ...AIRCRAFT DA 42 NG AMM Engine Doc 7 02 15 Rev 4 72 TITLE Page 1 15 Mar 2018 CHAPTER 72 ENGINE ...
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