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COMMUNICATIONS KIT INSTALLATION INSTRUCTIONS
This procedure is to be performed only by personnel who have received appropriate training.
If you do not completely understand all of the procedure, contact Aqua Lung to speak directly
with a Technical Advisor before proceeding any further.
4-Wire Terminal Block Kit Installation Instructions
Installing Terminal Block and Cable Assembly
1. Use a 3/8" nut driver to remove the communication post hex nuts and communication posts (24) from
the helmet shell (1). Remove the old plastic tubing (82) from the communication posts and replace it with
new plastic tubing from the communications kit. Re-install the communication posts into the helmet shell.
Insert the communication posts through the holes in the terminal block (83) with the "U" shape of the
block facing up (Fig. 1). Secure the terminal block to the helmet shell with a 3/8" nut driver and one hex
nut per communication post (Fig. 2).
Figure 1
2. Insert the connector cable assembly (84 or 85) through the bulkhead cap and ferrules (27), then the
communication bulkhead (25). Tighten the bulkhead cap and ferrules (27) hand tight, then 1 1/4 turns
further with a 11/16" wrench to secure the cable.
NOTE: Ensure the two piece ferrules are installed in the following order:
1. Cap.
2. Small ferrule (small side towards helmet)
3. Large ferrule (small side towards helmet).
3. Connector cable assembly is available with Hi-Use (84) (Fig. 3) or Marsh Marine (85) (Fig. 4) connector.
Figure 3
APPENDIX N
Figure 2
Figure 4
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