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Setting Upper and Lower Limits
Limit switch
adjustment
screws
To set the upper and lower limits for the hoist:
1:
Move the batten up until it is at the desired overtravel limit.
CAUTION:
2:
Turn the Upper Limit adjustment screw counterclockwise (which is moving the limit downwards)
until the blue and red LEDs illuminate.
3:
Turn the adjustment screw in the opposite (clockwise) position about 1/8 turn, but not so far that
the LED turns off.
4:
Press and hold the OVERTRAVEL override button using a small diameter instrument. This will
allow you to move the hoist from the local switch.
5:
Press the switch in the "DOWN" direction until the limit LED is unlit.
6:
Press the switch in the "UP" direction until the upper limit is reached and the hoist stops.
7:
Press the switch in the "DOWN" direction until the limit LED is unlit again.
Note:
26
The Overtravel limit should be no less than 6" (152mm) from the bottom of
the loft block to the top of the attachment for the batten. This is the
minimum distance that should be between these parts to ensure proper
operation and stopping distance.
It is important to return the batten to its normal operating range before
testing the overtravel limit. Testing the overtravel limit with full momentum
of the hoist is the desired outcome of returning the hoist to its normal
operating range.
Limit switch
LEDs
Vortek NXT Hoist Installation Manual
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