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37 

 

 

SAFIR  5L 

OPERATION AND ATTENDANCE MANUAL 

PG 01-31 

 

 
4.8.8.

 

Ignition System Inspection 

 

Inspection is performed according to the following procedures: 
(1)

 

Ignition Plug   

(The description is related to Fig. 16) 

 

 

Dismount the Interconnecting Conductor and screw off the ignition plug (1) from its casing (4) on the fuel 
ramp (3). 
Check the wear and tear of the points. An ignition plug must be discarded in the following cases: 
a)

 

Parts of the ignition plug are cracked or mechanically damaged, 

b)

 

The wear and tear of the points is bigger than Y=2mm, Z=8mm. 

Screw a satisfactory ignition plug with a new washer (2) from the set of replacement parts into the casing (4), 
lightly tighten to fit on using spanner and then tighten ignition plug using spanner for 20 ÷ 30

o

. Replace an 

unsatisfactory ignition plug for a new one from the set of replacement parts. 

 

Mount the cap nut of the connecting conductor to the ignition plug. 

 

Secure both the ignition plug and the cap nut against loosening with binding wire. 

 
NOTE: 

The ignition plug does not require any maintenance during operation. It is prohibited to clean the surface of the 
insulator between the points howsoever. 
 

After arriving at 1000 starts or 150 hours of APU operation, it is necessary to replace the ignition plug according 
to the given procedure: 
 
(2)

 

Interconnecting Conductor 

(The description is related to Fig. 17) 

 

 

Remove the binding wire and screw off the cap nuts (1). 

 

Remove the cable from the ignition plug and from the ignition device. 

 

Check:   

 

If  the cable has not been mechanically damaged; 

 

If there is no danger of disconnection or tearing out of wire strand of the Interconnecting conductor; 

 

If the connecting conductor insulation is not damaged (namely at the ends of screening). A moderate 
slackness of loops on the screening tubing is permissible. 

 

If the rubber packing rings on both ends of the conductor are not damaged. 

 

Use ohmmeter to check, if the connection of the conductor with the contact point (2) and the terminal 
(3) is not  electrically broken. 

 

 Any bad Interconnecting Conductor must be changed. 

 

 

(3)

 

Ignition exciter – without maintenance. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Содержание SAFIR 5L

Страница 1: ...PG 01 31 AUXILIARY POWER UNIT SAFIR 5L OPERATION AND ATTENDANCE MANUAL ISSUED ON 4 2015 April 2015...

Страница 2: ...UNIT SAFIR 5L OPERATION AND SERVICE MANUAL PG 01 31 Issued on April 2015 This document is the property of PBS Velk B te a s and it is illegal to copy use or promulgate it as a whole or in parts for a...

Страница 3: ...OF CHANGES AND CORRECTIONS Change number Subject of change Validity Pages No Performed by date L KSS 3874 The parameters changing of the control box based on the requirements from the operation APU Fr...

Страница 4: ...in Use 23 APU Actuation in flight 24 Other Limits 24 4 SERVICE INSTRUCTIONS 25 General Survey 25 Assembly and Operation Instructions 25 Instructions for Replacement of APU In Operation 27 Activation...

Страница 5: ...Fuel System Diagram 13 2 Oil System Diagram 14 3 Air System Diagram 15 4 Wiring Diagram with control box LUN 3594 04 16 5 APU Function Flow Chart 17 6 Timing Behavior of APU Start and Operation 18 7 T...

Страница 6: ...he time till the complete overhaul The adherence to these instructions is the prerequisite of achieving a reliable operation and endurance of APU The minute command of these instructions is therefore...

Страница 7: ...form to the class 10 11 according to GOST 17216 71 or 7 according to NAS 1638 Oil AEROSHELL TURBINE OIL 500 a 560 according to MIL L 23699D MOBIL JET OIL II according to MIL L 23699D IPM10 according t...

Страница 8: ...x current consumption 1 5 servo operated valve current consumption 0 150 m modulation 250 Hz 500 mV non return valve opens when pressure exceeds 10 kP thermoregulator 32 89 618 F air relief valve open...

Страница 9: ...ubular output filter filter efficiency 80 m Oil pump LUN 6320 8 description single stage drive from APU gear change over ratio 1 7 Oil filter 490131 01 filter efficiency 35 m differential pressure ind...

Страница 10: ...or air inlet temperature 190 374 F 60 60 75 982 F 140 018 F Venturi tube purpose 33 mm APU protection part of the anti stall bleed valve restricting the air quantity from the compressor and protect tu...

Страница 11: ...d 89 46 400 rpm APU protections levels of setup maximum speed 109 56 660 rpm sub speed 79 41 200 rpm closing during actuation when the exhaust gas temperature does not reach 150 302 F within 13 sec cl...

Страница 12: ...2 5 3 kV number of outputs for ignition plug 1 Type of ignition plug The interconnecting conductor length1100mm 85500 11 490510 01 Electric starter type 490110 01 output on 4600 rpm 1 25 kW maximum t...

Страница 13: ...13 SAFIR 5L OPERATION AND ATTENDANCE MANUAL PG 01 31 1 BLOCK OF FILTER AND SERVO 490740 01 2 ELECTRIC FUEL PUMP 490720 01 3 RETURN FUEL FILTER LUN 7616 8 Fig 1 Fuel System Diagram...

Страница 14: ...RATION AND ATTENDANCE MANUAL PG 01 31 1 OIL TANK 490620 03 2 OIL PUMP LUN 6320 8 3 OIL FILTER 490131 01 4 ELECTROMAGNETIC VALVE 486611 01 5 ELECTROMAGNETIC FUEL VALVE LUN 2475 8 Fig 2 Oil System Diagr...

Страница 15: ...15 SAFIR 5L OPERATION AND ATTENDANCE MANUAL PG 01 31 1 ANTI SURGE VALVE 490330 03 Fig 3 Air System Diagram 33 Bleed nozzle 27...

Страница 16: ...16 SAFIR 5L OPERATION AND ATTENDANCE MANUAL PG 01 31 Fig 4 Wiring Diagram with Control Box LUN 3594 04...

Страница 17: ...ave adequate signal from TP Sub speed reached in 35s ES EU disconected from the power supply Timing 13 s reached at the exhaust gases temperature 150 C 302 F Timing 35 s finished before reaching sub s...

Страница 18: ...idling 89 6 Reaching operating speed 100 cold and hot start of the main engines 7 APU cut off by pilot after finishing the main engine starting by switching off the switch DELAY STOP Reaching idle 89...

Страница 19: ...APU sub speed within 35 s 4 APU switch off after 35 s resulting from low oil pressure 5 APU switch off resulting from reaching over speed 6 APU switch off resulting from decrease of APU speed bellow t...

Страница 20: ...20 SAFIR 5L OPERATION AND ATTENDANCE MANUAL PG 01 31 1 Electr starter Conversion ratio 1 1 96 2 Oil Pump Conversion ratio 1 7 Fig 8 Kinematic Diagram of APU Gear Box...

Страница 21: ...rruption of APU operation exceeding 1 month see Chapter 5 The method of performance is the same as in Item 2 2 without ignition device circuit switched on breaker 5A APU will automatically stop in 13...

Страница 22: ...erature of 60 o C 76 o F on the prerequisite that no part of the oil and fuel loop is subcooled to less than 40 o C 40 o F Before actuating APU at temperatures below 40 o C 40 o F on the ground when t...

Страница 23: ...angular speeds for the three axis of airplane are linear overload n 5 g n 11 4 g nz 3 g angular acceleration 4 5 rad sec 2 25 rad sec 2 z 15 rad sec 2 APU is resistant to the effect of negative linear...

Страница 24: ...reed with original producer of APU Maximal exhaust gas temperature 850 C Nominal net voltage 28 VDC Precondition of successful APU start is that supply conductors of electric starter have the adequate...

Страница 25: ...nd fuel pump are located on the airframe separately Return fuel filter and anti stall bleed valve is installed in the piping of the system For correct function of APU the following must be ensured ran...

Страница 26: ...oil level There must be adequate space under the oil cleaner 490131 01 for easy dismounting of the filter body free space under filter body min 80 mm There must be adequate space under the Blok of fi...

Страница 27: ...cturer Perform the mounting of the ignition plug in accordance with Article 4 8 8 Install APU and other devices on the airplane according to the reference manual Detach the blinding plugs gradually du...

Страница 28: ...ssible as replacement Other replacements must be agreed on with the Manufacturer Oils of different types must not be mixed The oil used must be thoroughly drained from all devices of the APU Oil Syste...

Страница 29: ...ces The APU 490100 02 The Block of Filter and Servo 490740 01 The Return Fuel Filter LUN 7616 8 The Oil Tank 490620 03 3 After 150 30 service hours or 1000 APU actuations at the latest the one which w...

Страница 30: ...16 8 2000 8 300 Control Box LUN 3594 04 2000 8 300 Ignition exciter 81550 01 2000 8 300 Interconnecting Conductor 490510 01 2000 8 300 Ignition Plug 85500 11 1000 4 150 Temperature Transmitter LUN 137...

Страница 31: ...oreign matter and the possible products of corrosion by a wiping cloth X X X X 3 Check the leak tightness of the APU fuel oil installation Eliminate the possible presence of working liquids by tighten...

Страница 32: ...4 Inspection of Fuel Filter from Block of Filter and Servo in case of signaling of clogging X 12 4 8 5 Inspection of the Return Fuel Filter X 13 4 8 6 Inspection of the Oil Filter in case signaling of...

Страница 33: ...lock and unscrew bolts 4 21 pcs using spanner s7 Dismount the combustion chamber drainage valve 5 using spanner s17 Dismantle the fuel supply line 6 on the input to fuel drainage 7 using spanner s17 S...

Страница 34: ...essor overhaul with attendance of the production plant service crew Control the deposition Guide Wheel 13 with a 1st stage of Guide Wheel Guide Wheel 13 must freely slip by grooves in the outer rim on...

Страница 35: ...th clean petrol or aviation petroleum Clean the filter body with petrol Lubricate the packing rings 3 4 with the APU operating oil If the packing rings are defective it is permitted to use rings from...

Страница 36: ...g of the filling opening 1 and full the magnetic plug 2 Drain off the oil Remove the screen from the filler and rinse it in clean petrol Dismount oil filter 4 on output of oil tank see instruction and...

Страница 37: ...cap nut against loosening with binding wire NOTE The ignition plug does not require any maintenance during operation It is prohibited to clean the surface of the insulator between the points howsoeve...

Страница 38: ...pressure gauge which is mounted in place of the piping between the oil pump and the oil filter d Record the flushing of the oil pump into the oil pump certificate and into the APU Engine log book 4 8...

Страница 39: ...ion using distance washers from the set of replacement parts 1 10 Check the condition of the gasket ring If defective replace it with a new one from the set of replacement parts Tighten three M2 5 bol...

Страница 40: ...work into the APU Engine log book including values of the measured play V 4 9 Tightening Torque for screws and nuts fastening Thread Part Position Tightening Torque M3 0 8 0 5 Nm M4 3 1 Nm M5 7 1 Nm...

Страница 41: ...OPERATION AND ATTENDANCE MANUAL PG 01 31 1 Regulation casing 2 Spring 3 Spring support 4 Piston 5 Bolt 6 Cap 7 Adjusting regulating washers 8 Washer 9 Bolt 10 Plug Fig 9 Oil Pump 486130 01 1 3 4 5 6...

Страница 42: ...acking 19 Sealing Washer 20 Oil Filter 21 Suction tube 22 Screw of turned neck 23 Screw of turned neck 24 Exhaust pipe 25 Clutch of exhaust pipe 26 The grounding screw M4 27 The grounding screw M5 28...

Страница 43: ...43 SAFIR 5L OPERATION AND ATTENDANCE MANUAL PG 01 31 Fig 11 Permissible Defects of the Combustion Chamber 10 10 3 6 1 4 5 2 2 4...

Страница 44: ...ION AND ATTENDANCE MANUAL PG 01 31 1 Filter Body 2 Filter Element 3 Gasket Ring 14 6 x 1 9 4 Gasket Ring 47 x 2 5 5 Filter and Servo Block Body Fig 12 Sectional View of the Block of Filter and Servo 4...

Страница 45: ...45 SAFIR 5L OPERATION AND ATTENDANCE MANUAL PG 01 31 1 Filter Element 2 Filter Body 3 Gasket Ring 16 6x1 9 4 Gasket Ring 19 5x2 5 Fig 13 Sectional View of the Return Fuel Filter LUN 7616 8 3 2 1 4...

Страница 46: ...SAFIR 5L OPERATION AND ATTENDANCE MANUAL PG 01 31 1 Main Body 2 Filter Body 3 Filter Element 4 Gasket Ring 14 6 1 9 5 Gasket Ring 47 2 5 Fig 14 Broken out Section of the Oil Filter 490131 01 1 2 3 4...

Страница 47: ...1 4 2 10 6 5 8 9 7 13 12 11 1 Filler Neck with Cap and Screen 2 Magnetic Plug 3 Tank Jacket 4 Oil Filter 5 Oil Gauge 6 Safety Valve 7 Exchanger 8 Reaeration Neck 9 Neck Spout 10 Temperature Sensor Bli...

Страница 48: ...UAL PG 01 31 1 Ignition Plug 2 Sealing Washer 3 Fuel Ramp 4 Casting Fig 16 Ignition Plug 85500 11 installation 1 Cup Nut 2 Contact Point 3 Terminal Fig 17 Interconnecting Conductor 490510 01 1 3 2 1 H...

Страница 49: ...49 SAFIR 5L OPERATION AND ATTENDANCE MANUAL PG 01 31 1 Speed Transmitter 2 Tooth Wheel 3 Gear Box Body 4 Adjusting Washers 5 Gasket ring 12 6x2 5 Fig 18 Speed Transmitter LUN 1326 03 8 1 2 3 4 5...

Страница 50: ...0 SAFIR 5L OPERATION AND ATTENDANCE MANUAL PG 01 31 1 Collector Casing 2 Starter Wheel 3 Clutch Body 4 Cage 5 Flange 6 Gasket Ring 48x2 7 Screw 8 Brush Fig 19 Electric Starter 490110 01 1 2 3 4 5 6 7...

Страница 51: ...vo 490740 01 Oil filter 490131 01 and Filter in Oil tank devices after dewaxing It is recommended to perform this operation also after performing an airplane test flight at the final Manufacturer Firs...

Страница 52: ...tive air humidity 65 Do not store APU directly on the ground in open air area or in damp rooms The devices of the Fuel Oil System are not dismounted from the airplane but filled with operating oil acc...

Страница 53: ...ing START BUTTON the APU does not start turning APU is running for 2 sec only APU is ronning for 13 20 sec only APU runs for 35 seconds only APU not accelerate to operating speed 100 or after reaching...

Страница 54: ...gle way Valve of Block of Filter and Servo Check Valve SDF Signaling Device of Fuel Filter Clogging part of the Block of Filter and Servo SDO Signaling Device of Oil Filter Clogging differential press...

Страница 55: ...es the EC Control electronic Faulty operation of the electronic circuit the Control Box APU rotor revolves freely Replace ES APU Board network voltage in order Check the feeding Circuit breakers and f...

Страница 56: ...re Little or no signal level of APU speed Board network voltage in order Check the feeding Cables between the pickuk of revolutions and the Control Box in order When checking the Control Box by means...

Страница 57: ...ES or APU Fuel air mixture in combustion chamber has been ignited Exiter Device in operation Replace Control Box 150 C NO YES Check EGTP in 13th NO 20 YES YES NO Replace EU Check APU draining Replace...

Страница 58: ...in 35th second Replace EC Clean FF Check APU Draining Replace BFS and or FP Check feeding Servovalve circuit of FC Check current at Acceleration Limiter Replace EC Check if OF is clean Replace EC and...

Страница 59: ...APU via PC RS232 interface on a COM connector on Control Box and via software SAFIR Monitor Voltage of board electric network is correct Check the carrent of Servovalve Replace EC The exhaust gas tem...

Страница 60: ...haust gas is 850 15 C YES NO Replace EC Check if CL and EGTP are free from defects Repair connection of EGTP or CL Replace EGTP and or CL Control lamp light Check compressor and turbine APU Replace AP...

Страница 61: ...st Check if the voltage at EV3 and EV4 is correct YES NO Replace EC Check electric connection and operation of EC EV3 EV4 valves when energized are open without energized shut and tight EV2 valve in O...

Страница 62: ...eeding Replace EC Check if RFF is clean check if JV serviceable Clean RFF and or JV Replace JV Check free passage of reverse fuel flow pipe Replace BFS Perform the checks error messages the EC via PC...

Страница 63: ...speed YES NO Engine failure Piping between APU and ATS isnt tight Check APU rotor speed Remove untightness 95 100 Replace EC Voltage of board electric network is correct NOT TIGHT 133mA YES NO TIGHT V...

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