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NOTE : If necessary, adjust with screws (3).
3) Similarly, the retracted intermediate microswitch (1) (R.I.MS.) will trigger before the extended intermediate microswitch (4) (E.I.MS.) during flap retraction.
4) The offset value between these microswitches must be determined by testing so that the flap actuator stops between the 2 microswitches in both directions of operation - see Figure 202.
5) The audible warning signal microswitch (2) must sound (landing gear not extended) from "flaps extended 15 to 20°" position to "flaps extended at 40°" position.
Arret moteur — Motor stop
Am& moteur (MC.R.) Motor stop (R.MS.)
(MC.I.S.) (E.I.MS.)
(MC.I.R.) (R.I.MS.)
Arret motor (MC.S.) Motor stop (E.MS.)
Volets rentres
Flaps up
0°
Zone freinage moteur
Motor braking area
10°
Landing gear warning signal and wing flap intermediate microswitches - Adjustment
Figure 202
AGAB
Validity : "LPMI" flap actuator 27-50-01Page 203
(EA) MAR 00
1 - Retracted intermediate microswitch
2 - Audible warning signal microswitch
3 - Bolt
4 - Extended intermediate microswitch
5 - Flap actuator
6 - Extended limit microswitch
7 - Retracted limit microswitch
Landing gear warning signal and wing flap intermediate microswitches - Adjustment
Figure 203
AGAB
Validity : "LPMI" flap actuator 27-50-01 (EA) Page 204
MAR 00
4. INSPECTION / CHECK - FLAP ACTUATOR
A. Tools and consumable materials
- M ultimeter
- Varnish (TB 07-906)
B. Inspection / check of flap indicator (Figures 201 and 204)
1) Connect position transmitter potentiometer (8) to contact 4 : 40 < Rx 5 300 (Rx : adjustable resistor). NOTE : Make sure that potentiometer (8) value lies within 40 and 300 ohms. If necessary, adjust potentiometer (8).
2) Connect the indicator or voltmeter to contact 5.
3) Supply contact 1 at a voltage of 28 V.
4) Extend the flaps to "take-off' position. Open SW1 microswitch and position the indicator pointer to the intermediate position by adjusting P2 to obtain Rx = 245 Ohms and Vs = 2.57 V (± 10 mV).
5) Retract the flaps and adjust the indicator by adjusting P4 to obtain Rx = 300 Ohms et Vs = 1 V (± 10 mV).
NOTE : The spot on the microswitch indicates that SW1 is "ON".
6) Position the flaps to the intermediate position. Close SW1 microswitch and, if necessary, adjust P5 to obtain a correct indication.
7) Position the flaps to "landing" position and adjust P3 to obtain Rx = 75 Ohms and Vs = 5 V (± 10 mV).
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