Installation
1-30 Manual # 42-02-2P26
LS-EDGE Broken Tape Switch
The normally closed contacts on the Broken Tape Switch are used to detect a broken tape condi-
tion. The switch is mounted backwards for protection during shipment. Remove it and mount it
as shown on page 1-29. Position the switch so that the cam on the tensioner activates (opens)
the switch when the tensioner is at the bottom of its travel (no tension). Note that switch posi-
tion should be adjusted so that the switch is activated by the cam but not so close that the switch
is held against its mechanical stops. The switch activates at approximately 50% of travel.
Tape Hanging
Work from the cartop to hang the tape from the top hanger and allow it to unroll slowly as you
move the car down the hoistway. It is best to allow the tape to hang and straighten for at least
24-hours before attaching it to the bottom hanger.
Tape Tension
The tape is tensioned according to compression of the bottom tape mount spring. The tension
gauge provides visual indication of low, medium, and high tension positions. Short runs, up to
five floors will generally be acceptable at the low tension position. Runs to 15 floors will gener-
ally be acceptable at the medium tension position. Longer runs may require the high tension
position but you should start out with the medium setting first.
Tape tension is intended to reduce noise caused by tape vibration at contract speed. Generally,
you want to use the lowest tension setting that maintains a quiet tape at contract speed.
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