E-1778 Operation and Installation Manual
Contents
1. Remove pressure switch cap Use a flat screwdriver to adjust CW to increase CCW to decrease Secure the adjusting screw with a locking liquid paint Re install the cap 7 2 Pressure switch exchange PRESSURE SWITCH Remove pressure switch cap Disconnect 2 signal wires from the switch Remove the pressure switch using 24mm wrench clean NPT 1 8 thread in pump body with a clean cloth apply asmall amount of Loctite 262 Threadlocker or equivalent onto the new switch thread install the switch and tighten reconnect 2 signal wires check functionality NOTE The pressure switch is set to 7 bars Depending on the propeller governor heating orifice condition it can be necessary to increase setting see 7 1 Install the pressure switch cap Issue 4 Page 6 2012 05 04 8 0 SHIPPING AND STORAGE Conservation Inner conservation is automatically done by engine oil Attach cover cap After installing the conservation is done together with engine in accordance with the instruction of the engine manufacturer Outside conservation isn t required Pack the feathering pump to a plastic bag The plastic bag should be vacuumed and after that welded Make a note in the pump s installation record Deconservation isn t needed Storage Pumps have to be packed in carton box with accessory documentation Store the pumps in temperature from 10 C 50 F to 30 C 86 F and relative humidity fr2. Q A AVIA PROPELLER E 1778 Operation and Installation Manual Feathering Pump Unfeathering Pump AFP EASA CZ 21G 0011 EASA 21J 072 Issue 5 February 19 2014 Table of contents Table of Contents Overview List of inserted revisions List of effective pages General Model Designation Performance Data Design and Operation Information Installation and Operation Instruction Inspections Troubleshooting Shipping and Storage omen Oa kr wo DN Pump installation record Page 1 Page N o N OA A oa A A W 2011 08 05 List of Inserted Revisions No Date of Issue Pages 1 2011 08 05 all Initial Issue 2 2011 09 29 2 6 pressure switch adjustment 3 2011 12 15 2 4 temperature range update 4 2012 05 04 2 6 7 pressure switch exchange 5 2014 02 19 2 6 7 unfeathring pump brushless motor 6 7 List of Effective Pages Page Date of Issue 2011 08 05 2014 02 19 2014 02 19 2014 02 19 2011 08 05 2012 05 04 NID 01 4 Gd Po 2012 05 04 Page 2 Issue 5 2014 02 19 1 0 GENERAL The AFP feathering pump is a pump for use with dual acting propellers mainly produced by AVIA Propeller or it is used as an unfeathring pump for single acting propellers 1 0 1 Statement of purpose This publication provides operation installation and line maintenance information for
3. AND OPERATION INFORMATION 5 0 6 0 Page 5 The Avia Propeller s feathering pumps AFP are motor driven gear pumps which can fully replace feathering pump LUN 7840 The AFP pump consists of electric motor and gear pump The motor is equipped with cable and connector for connection to aircraft system see electric wiring Connector used on the feathering pump MS3456W20 08P Recommended counter part MS3450W20 08S lp AFP 28 2 RIC DIAGRAM S3496 The gear pump consists of gears relief valve pressure switch and bypass One gear is motor driven and it drives idler Both gears together generates pressurized oil Oil pressure is controlled by relief valve which is adjusted by manufacturer The pressure switch is activated by pressure when the feathering pump works it means when it generates pressure The switch is adjusted by feathering pump manufacturer Bypass allows small amount of oil to flow through the gear pump and to heat it up when the pump is not in operation INSTALLATION AND OPERATION INSTRUCTION install the feathering pump according to the aircraft operation manual connect hoses to the pump connect receptacle lockwire switch on the pump for 3 5 seconds according to the aircraft manual to check its operation the propeller starts to move and feathering lamp is illuminated check for oil leak no oil leakage INSPECTIONS Check for oil leakage Check oil
4. leakage immediately after engine stop Check oil leakage at pump surface and at fittings If oil leakage is detected check whether everything is torqued sufficiently If not torque If oil leakage is detected repeatedly contact service center WARNING No OIL LEAKAGE IS PERMITTED Issue 1 2011 08 05 7 0 TROUBLESHOOTING Symptom Probable cause Solution the feathering pump no electricity check breaker switch on doesn t work disconnect the pump check whether it is energized If not check airframe circuits motor burnt exchange the feathering pump relief valve open exchange the feathering pump the feathering pump burnt lamp replace the lamp works but no failed airframe circuit check the airframe circuit fix it signalization failed pressure switch disconnect receptacle energize motor and check the pressure switch if it is not closed after the pump has been energized it is failed Exchange the feathering pump the feathering pump wrong setting failed EHO check setting of the levers and EHO works but the propeller functionality Set appropriately doesn t move as required the feathering lamp low setting of the pressure re set the pressure switch by turns CW illuminated but the switch maximum 4 turns with its adjusting feathering pump is not element see 7 1 If it doesn t help energized exchange the pressure switch see 7 2 7 1 Pressure switch adjustment lt
5. the Avia Propeller feathering unfeathering pumps Installation removal operation and trouble shooting data is included in this publication However the airplane manufacturer s manuals and applicable propeller manuals should be used in addition to this information 1 1 DEFINITION OF COMPONENT LIFE AND SERVICE 1 1 1 Overhaul Overhaul is a periodic process and contains the following items disassembly inspection of parts reconditioning of parts reassembly The overhaul interval is based on hours of service operating time or on calendar time At such specified periods the feathering pump should be completely disassembled and inspected for cracks wear corrosion and other unusual or abnormal conditions As specified certain parts should be refinished and certain other parts should be replaced For overhaul interval for the feathering unfeathering pump please refer to Aia Propeller s Service Bulletin 1 1 1 2 Repair Repair is correction of minor damage caused during normal operation It is done on an irregular basis as required 1 1 2 1 A repair does not include an overhaul 1 1 2 2 Amount degree and extent of damage determines whether or not a governor can be repaired without overhaul 1 1 3 Component Life Component life is expressed in terms of total hours of service TT or Total Time and in terms of hours of service since overhaul TSO or Time Since Overhaul Both references are necessary in defining the lif
6. e of the component Occasionally a part may be life limited which means that it must be replaced after a specified period of use Overhaul returns the component or assembly to zero hours TSO Time Since Overhaul but not to zero hours TT Total Time No life limit is established for the AFP feathering unfeathering pump Page 3 2014 02 19 2 0 MODEL DESIGNATION AFP 28 1A 1 2 3 4 Legend 1 AFP Feathering Unfeathering Pump manufactured by AP 2 28 nominal voltage 3 application number settings of pressures etc 1 SAE fitting 2 ONL fitting 3 ONL fitting flange for L 410 airplane 4 SAE fitting AeroVolga unfeathering pump 4 A version with DC brushless motor S No 09 P 003 a b c a Year of Manufacture b Feathering Pump c Consecutive Number 3 0 PERFORMANCE DATA Surrounding operation temperature from 60 C 76 F to 85 C 185 F Nominal Voltage 28 VDC Maximum Current 35 A Output Pressure Max 2 0 0 1 MPa Maximum Switch on Time 16 s Pump Capacity at 1 5 MPa Output Pressure 6 8 l min 3 1 Dimensions 270 TR SWITCH INPUT O 2 N oo M18x1 5 _ M22x1 5 a o AJ ON 19 l O 5 LO Von 50 8 j 4x No 10 32 for fixing Fig 1 Fig 2 Weight 1 70 kg in basic configuration Issue 5 Page 4 2014 02 19 4 0 DESIGN
7. om 40 to 80 Keep stock room free of gases with deleterious effect FEATHERING PUMP INSTALLATION RECORD RINE Gast Sciccm ati Ghia oti SINS 4 4c2o Scie ei Seite Page 7 2012 05 04
Download Pdf Manuals
Related Search