POINT 1
ACTUATOR - CASE BONDING TEST
Figure 1004/GRAPHIC 21-53-12-991-005-A01
Page 1010
Subtask 21-53-12-750-002-A01
(6) Insulation Test
CAUTION: BEFORE YOU DO THE INSULATION TEST, MAKE SURE THAT THE ACTUATOR IS NOT CONNECTED TO THE ELECTRICAL TEST-UP.
(a) For Versions ABCDE
ACTION RESULT
1 Make sure that pin M of the connector is connected to the casing of the actuator.
2 Connect pins H, J, K, L, N, R and V together.
3 Connect pins G, P, S, A, B, C, D, E, F ,T and U together and to the Ground.
4 Apply 500 VDC between pins [ H, J, K, L, N, R and V together ] and pins [ G, P, S, A, B, C, D, E, F ,T and U together ] during 1 mn.
5 Disconnect all wires.
6 Connect pins A, B, C, D, E, F ,T and U together.
7 Connect pins G, P, S, H, J, K, L, N, R and V together to pin M and to the Ground.
8 Apply 45 VDC voltage between pins [ A, B, C, D, E, F ,T and U together ] and pins [ G, P, S, H, J, K, L, N, R and V together to pin M and to the ground] during 1 mn.
Make sure that insulation resistance is more than 100 M..
Make sure that insulation resistance is more than 100 M..
Page 1011
21-53-12 JUN 15/10
E. Functional Tests WARNING: THE ELECTRICAL TEST SET-UP USES 115 VAC VOLTAGES. OBEY STANDARD
PROCEDURES TO WORK WITH HIGH VOLTAGE.
Subtask 21-53-12-750-003-A01
(1) Strokes, Microswitches and Potentiometer Test
(a) For Versions ABC
ACTION RESULT
1 Remove the protective sleeve or the protective jacket from the ball-screw.
2 Connect the actuator to the Electrical Test Set-Up (ratiometers) (Ref. to Fig. 1001).
3 Carefully set the auto-transformer to have a very low displacement speed (lower than 1 mm/s (0.039 in/s)).
4 Set the actuator to the MECHANICAL STOP EXTENDED position (door fully closed) (Ref. to Fig. 1002).
5 (Ref. to Fig. 1005).
6 Measure the distance DRF between the measurement point X and the measurement point Y.
7 Measure the total resistance X of the main potentiometer between pin A and pin C of the connector.
8 Measure the total resistance Y of the secondary potentiometer between pin D and pin F of the connector.
9 Calculate |X – Y|.
10 Measure, with the ratiometers, the voltage ratio AB/AC between pin A and pin B and between pin A and pin C (AC).
Record DRF.
Make sure that X = 6600 ± 660 .. Record X.
Make sure that Y = 6600 ± 660 .. Record Y.
Make sure that |X – Y| < 660 .. Record |X – Y|.
Make sure that AB/AC = 0.9273 + 0/- 0.0080.
Record AB/AC.
Page 1012
ACTION RESULT
11 Measure, with the ratiometers, the voltage ratio DE/DF between pin D and pin E and between pin D and pin
F.
12 Carefully set the auto-transformer to have a displacement speed between 3 mm/s and 5 mm/s (between 0.118 in/s and 0.197 in/s).
13 Set the actuator to the ELECTRICAL RETRACTED position (door flight opened).
14 Measure the distance D between the measurement point X and the measurement point Y.
15 Measure, with the ratiometers, the voltage ratio AB/AC between pin A and pin B and between pin A and pin C (AC).
16 Measure, with the ratiometers, the voltage ratio DE/DF between pin D and pin E and between pin D and pin
F.
中國航空網(wǎng) www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：LIEBHERR-AEROSPACE TOULOUSE SAS COMPONENT MAINTENANCE MANUAL(16)
