PROPELLER DEICING SYTEM
A. Description
Deicers contain special heater wires protected by fabric plies and by oil and abrasion-resistant rubber.
The side of deicer cemented to propeller has a dull finish whereas air side finish is glossy. Each deicer
has a separate lead for inboard and outboard heater and a third lead which is a common ground. These
leads are so marked. An unmarked ground can be identified by using an ohmmeter across three possible
pairs of leads. One pair will show twice the resistance of the other pairs. The latter are the hot leads
and the lead excluded from the pair that shows twice the resistance of the other pairs is the ground
lead. All deicers used on this airplane must be of the new design, which includes a grey plastic patch
where deicer and strap join.
To transfer electrical power to rotating deicers, a brush block assembly is mounted to engine or similar
stationary member and has brushes which are spring loaded to press against revolving slip rings. The
slip ring assembly is provided as a slip ring gear assembly which replaces original starter ring gear of
engine.
The timer is a sealed unit. If found inoperative, it must be replaced as an assembly no field repairs are
authorized.
The ammeter is designed for each particular system and it is therefore important that correct replacement
part number be used if replacement should be required. In event of low aircraft battery voltage (very
possible in ground checks), ammeter readings will be lower than at full voltage. Provided ammeter
needle reads in shaded range on scale, (full aircraft voltage) current flow is considered as normal.
B. Deicer System Operational Check
(1) Lock brakes and operate engine at near take-off power.
(2) Turn deicer system switch ON and observe deicer ammeter for at least two minutes.
(3) Ammeter needle must flicker approximately every 30 seconds as step switch of timer operates.
(4) With engines stopped, turn deicer switch ON and feel deicers on propellers for proper sequence of
heater operation.
(5) Temperature rise should be noticeable and each heater should warm for about 30 seconds.
(6) Local hots spots indicate surface damage requiring replacement of deicer.
C. Troubleshooting
Troubles along with their probable causes and suggested remedies are listed in Chart 4.
PIPER AIRCRAFT
PA-32R-301/301T
MAINTENANCE MANUAL
30-60-00
Page 30-27
Reissued: July 1, 1993
2H21
Содержание PA-32R-301T SARATOGA S
Страница 26: ...CHAPTER 4 AIRWORTHINESS LIMITATIONS 1C1 ...
Страница 29: ...CHAPTER 5 TIME LIMITS MAINTENANCE CHECKS 1C4 ...
Страница 53: ...CHAPTER 6 DIMENSIONS AND AREAS 1D6 ...
Страница 64: ...CHAPTER 7 LIFTING AND SHORING 1D21 ...
Страница 68: ...CHAPTER 8 LEVELING AND WEIGHING 1E1 ...
Страница 72: ...CHAPTER 9 TOWING AND TAXIING 1E5 ...
Страница 76: ...CHAPTER 10 PARKING AND MOORING 1E9 ...
Страница 80: ...CHAPTER 11 REQUIRED PLACARDS 1E13 ...
Страница 92: ...CHAPTER 12 SERVICING 1F1 ...
Страница 126: ...CHAPTER 20 STANDARD PRACTICES AIRFRAME 1G17 ...
Страница 127: ...THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 137: ...INTENTIONALLY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 20 00 00 Page 20 9 Reissued July 1 1993 1H3 ...
Страница 138: ...INTENTIONALLY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 20 00 00 Page 20 10 Reissued July 1 1993 1H4 ...
Страница 139: ...CHAPTER 21 ENVIRONMENTAL SYSTEMS 1H5 ...
Страница 186: ...INTENTIONALLY LEFT BLAN PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 21 50 00 Page 21 45 Reissued July 1 1993 1J4 ...
Страница 188: ...CHAPTER 22 AUTOFLIGHT 1J7 ...
Страница 193: ...CHAPTER 23 COMMUNICATIONS 1J12 ...
Страница 203: ...CHAPTER 24 ELECTRICAL POWER 1J22 ...
Страница 263: ...CHAPTER 25 EQUIPMENT FURNISHINGS 2A13 ...
Страница 267: ...INTENTIONALLY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 25 00 00 Page 25 3 Reissued July 1 1993 2A17 ...
Страница 269: ...CHAPTER 27 FLIGHT CONTROLS 2A20 ...
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Страница 301: ...INTENTIONALLY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 27 20 00 Page 27 30 Reissued July 1 1993 2C4 ...
Страница 332: ...CHAPTER 28 FUEL 2D11 ...
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Страница 363: ...CHAPTER 29 HYDRAULIC POWER 2E18 ...
Страница 404: ...CHAPTER 30 ICE AND RAIN PROTECTION 2G16 ...
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Страница 470: ...CHAPTER 32 LANDING GEAR 3A13 ...
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Страница 550: ...CHAPTER 33 LIGHTS 3D24 ...
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Страница 562: ...CHAPTER 34 NAVIGATION AND PITOT STATIC 3E12 ...
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Страница 580: ...INTENTIONALLY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 34 40 00 Page 34 17 Reissued July 1 1993 3F6 ...
Страница 581: ...INTENTIONALLY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 34 40 00 Page 34 18 Reissued July 1 1993 3F7 ...
Страница 582: ...CHAPTER 35 OXYGEN 3F8 ...
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Страница 604: ...CHAPTER 37 VACUUM 3G6 ...
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Страница 616: ...CHAPTER 39 3G18 ELECTRIC ELECTRONIC PANELS MULTIPURPOSE PARTS ...
Страница 619: ...INTENTIONALLY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 39 40 00 Page 39 2 Reissued July 1 1993 3G21 ...
Страница 620: ...CHAPTER 51 STRUCTURES 3G22 ...
Страница 636: ...CHAPTER 52 DOORS 3H14 ...
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Страница 646: ...INTENTIONALLY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 52 10 00 Page 52 9 Reissued July 1 1993 3H24 ...
Страница 647: ...INTENTIONALLY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 52 10 00 Page 52 10 Reissued July 1 1993 3I1 ...
Страница 649: ...INTENTIONALLY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 52 30 00 Page 52 12 Reissued July 1 1993 3I3 ...
Страница 650: ...CHAPTER 55 STABILIZERS 3I4 ...
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Страница 659: ...INTENTIONALLY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 55 30 00 Page 55 8 Reissued July 1 1993 3I13 ...
Страница 662: ...CHAPTER 56 WINDOWS 3I16 ...
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Страница 669: ...INTENTIONALLY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 56 20 00 Page 56 6 Reissued July 1 1993 3I23 ...
Страница 670: ...CHAPTER 57 WINGS 3I24 ...
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Страница 675: ...INTENTIONALLY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 57 20 00 Page 57 4 Reissued July 1 1993 3J5 ...
Страница 688: ...CHAPTER 61 PROPELLER 3J18 ...
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Страница 702: ...INTENTIONALY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 61 20 00 Page 61 13 Reissued July 1 1993 3K8 ...
Страница 703: ...INTENTIONALY LEFT BLANK PIPER AIRCRAFT PA 32R 301 301T MAINTENANCE MANUAL 61 20 00 Page 61 14 Reissued July 1 1993 3K9 ...
Страница 704: ...CHAPTER 70 STANDARD PRACTICES ENGINES 3K10 ...
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Страница 708: ...CHAPTER 71 POWER PLANT 3K14 ...
Страница 737: ...CHAPTER 73 ENGINE FUEL SYSTEM 4A13 ...
Страница 749: ...CHAPTER 74 IGNITION 4B1 ...
Страница 783: ...CHAPTER 77 ENGINE INDICATING 4C11 ...
Страница 793: ...CHAPTER 78 EXHAUST 4C21 ...
Страница 801: ...CHAPTER 79 OIL 4D5 ...
Страница 805: ...CHAPTER 80 STARTING 4D9 ...
Страница 819: ...CHAPTER 81 TURBINES 4D23 ...
Страница 833: ...CHAPTER 91 CHARTS WIRING DIAGRAMS 4E13 ...
Страница 945: ...CHAPTER 95 SPECIAL PURPOSE EQUIPMENT 4J5 ...