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ACTUATOR - MECHANICAL INSTALLATION
Figure 1008/GRAPHIC 21-53-12-991-009-A01
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Subtask 21-53-12-750-005-A01
(4) Fast Closure Test (For versions ABC only)
(a) For versions ABC only
ACTION RESULT
1 If necessary, set the actuator to the
ELECTRICAL RETRACTED position
(door flight opened) (Ref. to
Fig. 1002).
2 Apply a load of 800 -0/+100 N
(179.84 -0/+22.48 lbf) to the ball-
screw.
3 Set the Electrical Test Set-Up to drive
the motor with 115 VAC, 400 Hz (SW2
to fast) (Ref. to Fig. 1001).
4 At the same time, start a chronometer
and set the actuator to the
ELECTRICAL EXTENDED position
(door flight closed).
5 After the actuator stops to the Make sure that the travel time from the ELECTRICAL EXTENDED position ELECTRICAL RETRACTED position (door flight closed), immediately stop (door flight opened) to the ELECTRICAL the chronometer and record the time. EXTENDED position (door flight closed)
is no more than 4 s.
Record the fast closure travel time.
6 Remove the 800 -0/+100 N
(179.84 -0/+22.48 lbf) load.
Subtask 21-53-12-750-006-A01
(5) Maximum Load Test
(a) For versions ABC
ACTION RESULT
1 Set the Electrical Test Set-Up to drive the motor with 115 VAC, 400 Hz (SW2 to fast) (Ref. to Fig. 1001).
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ACTION RESULT
2 If necessary, set the actuator to the ELECTRICAL RETRACTED position (door flight opened).
3 Apply a 1800 N (404.64 lbf) load to the rod-end of the ball-screw.
4 At the same time, start a chronometer and set the actuator to the ELECTRICAL EXTENDED position (door flight closed) (Ref. to Fig. 1002).
5 After the actuator stops to the ELECTRICAL EXTENDED position (door flight closed), immediately stop the chronometer and record the time.
6 Remove the 1800 N (404.64 lbf) load.
(b) For versions DE Make sure that the travel time from the ELECTRICAL RETRACTED position (door flight opened) to the ELECTRICAL EXTENDED position (door flight closed) is no more than 10 s.
Record the maximum load travel time.
Make sure that the maximum RMS current intensity is no more than 2.3 A.
Record the current intensity.
ACTION RESULT
1 Set the Electrical Test Set-Up to drive the motor with 115 VAC, 400 Hz (SW2 to fast) (Ref. to Fig. 1001).
2 If necessary, set the actuator to the ELECTRICAL RETRACTED position (door flight closed).
3 Apply a 1400 N (314.72 lbf) load to the rod-end of the ball-screw.
4 At the same time, start a chronometer and set the actuator to the ELECTRICAL EXTENDED position (door flight opened) (Ref. to Fig. 1003).
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ACTION RESULT
5 After the actuator stops to the ELECTRICAL EXTENDED position (door flight opened), immediately stop the chronometer and record the time.
6 Remove the 1400 N (314.72 lbf) load.
Subtask 21-53-12-750-007-A01
(6) Clutch Efficiency Test
(a) For versions ABCDE Make sure that the travel time from the ELECTRICAL RETRACTED position (door flight closed) to the ELECTRICAL EXTENDED position (door flight opened) is no more than 32 s.
Record the maximum load travel time.
Make sure that the maximum RMS current intensity is no more than 0.45 A.
Record the current intensity.
ACTION RESULT
1 Set the Electrical Test Set-Up to drive the motor with 115 VAC, 400 Hz (SW2 to fast) (Ref. to Fig. 1001). 2 If necessary, set the actuator to the ELECTRICAL RETRACTED position (Ref. to Fig. 1002) (Ref. to Fig. 1003). 3 Apply a 2500 N (562 lbf) load to the rod-end of the ball-screw. 4 Remove the 2500 N (562 lbf) load. The brake is activated (no 28 VDC at pin U). After 20 s, make sure that you see an axial ball-screw displacement no more than 2 mm (0.0787 in). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：LIEBHERR-AEROSPACE TOULOUSE SAS COMPONENT MAINTENANCE MANUAL(19)
