AIRCRAFT
Ice Protection System
DA 42 NG Series
AMM
Page 220
15 Mar 2018
30-00-00
Doc # 7.02.15
Rev. 4
15. Remove/Install the Low Pressure Switch Proportioning Unit
A. Remove the Low Pressure Switch Proportioning Unit
Detail Steps/Work Items
Key Items/References
(1)
Remove fairing cover from empennage.
(2)
Remove cable ties.
(3)
Disconnect VOR antenna (coaxial cable).
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.
(4)
Disconnect all electrical connectors from the low
pressure switches.
(5)
Remove locking wire from the hose connections
pointing in flight direction.
(6)
Disconnect the hose connections to the low
pressure switches.
Use caps to protect the loose line
connections from contamination.
(7)
Remove bolts and washers, which hold the low
pressure switch proportioning unit to the vertical
stabilizer.
(8)
Pull low pressure switch proportioning unit
upward.
To give access to the feeder line of the
fuselage section.
(9)
Remove locking wire from the feeder line
connection.
(10)
Disconnect feeder line to the low pressure
switch proportioning unit.
Use caps to protect the loose line
connections from contamination.
(11)
Remove locking wire from the two hose
connections labeled as 2 and 3 on the
proportioning unit (LH & RH horizontal tail
panel).
(12)
Disconnect the two hose connections labeled as
2 and 3 on the proportioning unit (LH & RH
panel).
Use caps to protect the loose line
connections from contamination.
(13)
Remove low pressure switch proportioning unit.
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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