Edgetech PORT LF, User Hardware Manual

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C-1
LF TANDEM KIT OPTION
The PORT series of acoustic releases come with an optional Tandem Kit. A Tandem Kit is used to join two
releases, providing a single lift point and single release point.
WARNING!
The primary purpose of the Tandem Kit is to add redundancy to the
mooring, thereby increasing the odds of instrument recovery. However,
a Tandem Kit does not increase the working or release load ratings of
Tandem Assembly.
When a Tandem is used with a mooring it can be recovered by releasing either PORT-LF release. In the
event of a failure of the mooring to detach from the anchor, the RELEASE command can be sent to both
PORT-LF’s freeing both the oblong ring and chain assembly. In normal use, when just one release is
triggered the only thing that is lost is the oblong ring.
NOTE: When used to release heavy loads the last thread of the Release
Link may pull out. Carefully inspect the release links after recovering the
tandem set. Replace any damaged release links as required.
Appendix Table C-1: PORT LF Tandem Kit Parts - Refer to 0008237
Mechanical Drawing
Mechanical Drawings of the Tandem Kit are shown on the following pages:
QTY. DESCRIPTION EDGETECH MTL NUMBER
1 Spreader, Top, 316SS MTL 1
2 Washer Shoulder MTL 2
1 Stud, Threaded, 1/4-20”, 0.75”, 316SS MTL 3
1 Washer Shoulder 0.25 x 0.032” Nylon MTL 4
2 Nut, Hex Nylock, 5/16-18”, 316SS MTL 5
1 Bracket Delrin MTL 6
1 Bolt, Hex,1/4-20 3.25 INCH 316SS MTL 7
2 Washer, Flat, ¼”, 316SS MTL 8
1 Nut, Hex Nylock, 1/4-20”, 316SS MTL 9
2 Link Release Screw MTL 10
2 Shackle Anchor, 0.3125”, Galvanized Carbon Steel MTL 11
1.5 ft Chain, 0.3125”, Galvanized Steel MTL 12
1 Link, Oblong 1/2” Weldless Alloy Steel MTL 13
1 Anode (small) MTL 14
2 Bolt, Shoulder 5/16-18 x 0.375 x1.50”, 316SS MTL 15