(b)
 With E0109
 (Ref. Fig. 003)

 -Cut the convoluted conduit to the required length.
 -
Slide the connector nut, the outer sleeve and the wire clip NSA935811 onto the conduit.

 -
Slide the Viton inner sleeve onto the nipple.

 -Smooth the conduit end in the heating furnace pre-heated to approx. 350 deg.C (662.00 deg.F) when the required temperature has been reached.
 -Insert the conduit end into the heating bush, wait until it is flared and slide onto the nipple with the Viton inner sleeve (STEP 1).
 -Slide the wire clip onto the flared conduit end and install it with a pair of pliers. The correct pre-tension is achieved when the wires tightly enclose the conduit end (STEP 2).
 -Bend the wire loop in the opposite direction.
 -Cut off the protruding wire loop with a side cutter (STEP 2) and press or carefully tap down the remaining wire ends (approx. 5 mm (0.1968 in.) ) with the bottom side of the pliers (STEP 3).

20-33-31 Page 8
 Oct 01/04
R

 Convoluted Conduit - Attachment at the Rear of the Connector
 E0432, NSA935805 and NSA935806
 Figure 002

20-33-31 Page 9
 Oct 01/04
R

 Convoluted Conduit - Installation Procedure
 E0109
 Figure 003

20-33-31 Page 10
 Oct 01/04
R

 -Slide the Viton outer sleeve over the wire clip (STEP 4), pull the connector forward and screw it onto the connector or angle piece.
 (c) With NSA935829 (Ref. Fig. 004) Insert the end pieces into the protective conduit with a turning motion (Tools are not required).

20-33-31 Page 11

 Convoluted Conduit - Installation Procedure
 NSA935829
 Figure 004

20-33-31 Page 1220-33-32 Page 120-33-32 Page 2

 ____________________________________________METALLIC CONDUIT - DESCRIPTION AND OPERATION
 _______1. General
R R R R R R R R R R R  This chapter gives the description and methods for the installation of metallic conduits. Metallic tubes: They are used for wire routing, when mechanical protection of the wires is necessary, or to get over areas that you cannot access. Screened convoluted and overbraided conduits: The metallic braid parts are used to give electromagnetic compatibility (EMC) between all the electrical equipment of the aircraft and to prevent electromagnetic interference (EMI) and radio frequency interference (RFI). The other parts (convoluted, textile and halar (E-CTFE) conduits) are used to give mechanical protection to the harness.
R  The metallic conduits installed on the aircraft are divided into 3 sub-families and have the codes that follow:
 - Metallic tubes: NSA3625
R  - Screened convoluted conduits: . Without halar sheath: ABS0330 ABS0492 ABS0631 ABS0887B E0469 E0560 NSA935805T NSA935806T or S
R  . With halar (E-CTFE) sheath: ABS0510 ABS0511 ABS0887C
R R R  - Overbraided conduits: ABS1353-003 ABS5315 (For example, used for F00030090 or F00730606)

 _____________________2. Metallic tube NSA3625
 A. P/N identification  NSA3625 - 8 - 24 | | | | | ----- Length code | ---------- Diameter code ----------------- Standard P/N
 B. Procedure
R R R R  (1) General This type of harness protection has a different size and geometry which depend on the aircraft type and the area where it is installed. Before installation of the metallic conduits, the procedures that follow are necessary: - Flaring at the ends and forming to adapt them to the necessary route. - Exterior and interior treatment for corrosion protection and cable harness protection. - When specified on the drawing, a drain hole at the lowest point of the conduit.
R R  (2) Drain hole procedure (Ref. Fig. 001) If required, make drain holes 
____NOTE : For metallic conduits, the drain hole will be made with a specific tool, and in the workshop, before installation on the cable harness.
 - Drill a hole with an applicable tool at the lowest point of the tube. - Insert the point of tool 59-3-02-24799 or 59-3-02-25151 in this hole for a curved tube or an equivalent. - Install and lock the tube in position with the supports. With a portable drill, rotate the dimpling tool and pull it outwards.

R Metallic Tube - Drain Holes and Tube Preparation R NSA3625
 Figure 001

20-33-32 Page 3

 ____________________________
3. Screened convoluted conduits
 A. P/N identification
 ABS0330 - 05
 ABS0492 - 06
 ABS0510 - 05 A
 ABS0511 - 06 A
 ABS0631 06 A
 | | |
 | | ------ Type code : no code = without drain hole
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：A320 ESPM Electrical Standard Practices Manual 2(57)