Versatrax 100™
Document: UMDT013103.docm
Revision: A10
Created by: KJB
Date: 26 Sep 2019
3070984-A10
Source Location: C:\ePDM\ISLEng\products\dt-versatrax100mkii\manuals\UMDT013103.docm
Page 25 of 41
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Magnet Adjustment
Note: The magnet tray is held by four M6 screws. Two screws are pulling up, and two screws are pushing
down in an “X” arrangement. The screws that are pushing down (lock screws) are threaded through the
chassis backplane. The screws that are pulling up (height adjustment screws) are threaded through the
magnet tray. Using this method, small adjustments can be made to the tilt angle of the magnet tray as
well as the height. To adjust the magnet height, loosen off the two locking screws. Then adjust the height
using the height adjustment screws as required. Last, evenly snug down the locking screws. These do not
require much torque
– the magnet tray may easily be distorted if the locking screws are too tight. If the
locking screws are not positioned evenly, the magnet tray will be crooked. Use Loctite 243 (blue) to hold
the screws in place. Use low torque.
When adjusting the magnet tray, it is important to set it to an appropriate height. The proper setting for
magnet height is a balance of three factors: required force, required ground clearance, and track loading.
Generally, the magnets should be set as close to the wall surface as possible in order to yield the highest
pulling force. However, if the magnets are set too close, the vehicle may stick itself to the surface it is
driving on or the additional load may overload the tracks and immobilize the vehicle.
In the case that the vehicle will be operated on a vertical surface, special care should be taken to set the
magnet height. The inherently higher danger of operating the vehicle on a vertical surface necessitates a
higher margin of safety for the magnetic adhesion of the vehicle. Also, discontinuities on the surface, such
as welds, may cause the vehicle to lose magnetic adhesion; therefore, inspections should not require the
vehicle to navigate over such discontinuities if it is operating vertically.
Note:
If the system is equipped with an SP90
™, magnet tray mounting fasteners are to be replaced as
required for clearance with the body of the SP90. Longer fasteners are to be used when the magnet tray
is adjusted to a lower position and shorter fasteners are to be used when the magnet tray is adjusted to a
higher position.
Warning:
Pinch Hazard
– Rare earth magnets are very strong. Use caution when handling the
magnets or vehicle near steel objects, they may snap together unexpectedly.
Warning:
Strong Magnets
– Operators with magnetically sensitive medical implants should be
aware and follow appropriate practices. Care should also be exercised around other
magnetically sensitive devices, including computer hard drives, cell phones, watches and
credit cards.