PPS Revision Notice #2018-005M
PPS 9.17, Issue 12 - Encapsulation of Electrical Wire Harnesses and Cable AssembliesSummary of Changes:
- Added new sub-section 3.1 and para. 3.1.1, to ensure correct usage of reference specifications.
- Created new sub-section 3.2, to identify PPS document references as Bombardier Toronto (de Havilland) process specifications.
- Added new para. 4.1.1, to prevent inappropriate material substitution.
- Replaced reference to "Raychem" with reference to "TE Connectivity (Raychem)".
- Revised reference to hot air guns to add the Steinel HG 2520E hot air gun as an example.
- Replaced all reference to S-1009, S-1030 and S-1125 adhesives with reference to S1009, S1030 and S1125 adhesives, respectively.
- Add reference to TE Connectivity (Raychem) S1017 and S1048 melt adhesive tapes.
- Added provisions for preparation, curing and storage of adhesives which may be specified by the engineering drawing, but are not specifically referenced in this PPS.
- Revised cure requirements for S1030 hot melt adhesive tape.
- Revised procedure for all encapsulation involving adhesives to remove instruction to wipe away excess adhesive to form a uniform fillet of adhesive after shrinking the boot, transition or tubing in place.
- Added procedure for encapsulation of individual electrical/electronic components.
- Revised procedure for removal of installed transitions and boots to also include removal of installed heat shrinkable tubing.
- Revised requirements to clarify/illustrate adhesive extrusion limits (i.e., insufficient, optimum and excessive).
- Added para. 7.1, to clarify applicability of the safety precautions specified herein.
- Moved safety considerations regarding hot air guns to section 7 (Safety Precautions).
- Added additional safety precautions.
- Revised storage provisions to specifically include hot melt adhesive tapes.
This revision notice lists brief summaries of technical changes introduced for each of the revised PPS's. Please note that these summaries are not detailed and are intended only to assist in alerting users to changes which may affect them; refer to the applicable PPS for authorized, detailed procedure and requirements.
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