Nanomag™
Document: UMAM000196.docm
Revision: A06
Created by: JS
Date: 26 Sep 2019
IPN: 3024835-A06
Source Location: C:\ePDM\ISLEng\products\am-nanomag\manuals\UMAM000196.docm
Page 10 of 19
User Ma
nual
Warning:
These magnets are very powerful. When removing the screws from the magnet retainer plate,
maintain good pressure on the plate. Failing to do so will allow the magnets to jump out and could easily
pinch or cut your fingers.
Caring For The Tether
The tether should be considered the most important part of the vehicle system. It feeds power and
control signals to the vehicle and returns data from the sensors. If the tether becomes damaged from
improper use, poor handling or an accident, the vehicle may become crippled or inoperable. This is a
serious situation because of the cost for tether repairs, as well as significant downtime and loss of
production. For maximum tether life and reliability, Eddyfi offers the following tether handling tips:
Never step on the tether. Trampling the tether underfoot may crush conductors, leading to premature
failure. Trampling is also abrasive to the tether jacket. Trampling fosters the wrong attitude toward the
tether. Remember that this is an expensive multi-conductor tether, not a common electrical extension
cord.
Never allow passenger or utility vehicles to drive over the tether. This will do concentrated, immediate
and permanent damage. Set up cones or blockades to keep vehicles away.
Do not bend the tether beyond its minimum bend diameter. If the tether has difficulty bending, you have
bent it too far. If the tether is bent beyond its minimum diameter on pulleys or around corners wire fatigue
will be accelerated. It is important that a winch drum and any pulleys or tackle supports the tether
beyond its minimum bend diameter. For an extended fatigue life, the minimum bend diameter should be
considered larger.
Never kink the tether. A fully bent back kink causes local but permanent deformation in the tether. This
can be serious because accelerated wire fatigue is subsequently concentrated at the kink location. Take
precautions to never allow the tether to kink. Kink situations may occur when there is slack tether with
closing loops, or when coils slip off a full drum.
Do not snap load the tether. Loads may peak at a very high value when the tether snaps taunt. Snap
loading may easily occur when a slack tether is reeled onto a motorized spool, or when the transport
device is suspended from a swinging deployment crane.
Avoid loading the tether unnecessarily. Unnecessary large loads will only shorten the fatigue life of the
tether.