Stick Alignment; Mounting The Floor Magnets - O. Thompson Microflite Ultra 2000 Installation & Adjustment Manual

Stick Alignment

5.2
After the tape has been installed, adjust the stick front to back slightly so it does not ride hard on
one side of the unistrut bracket during any part of the travel through the hoistway. In high rise
buildings, the rails may vary in and out substantially. This may cause the encoder guides to wear
prematurely unless the above precaution is taken.
5.3

Mounting the Floor Magnets

South facing magnets of different lengths are used to encode each floor position. The lengths
start at 6 ½ inches at the bottom floor and increase by ½ inch for each successive floor. Looking
at the perforated tape from the elevator car, the magnets for the door zone are mounted to the
right of the perforated holes. The magnets should be mounted as close to the perforated holes
as possible without covering any portion of the hole.
The 6 ½ inch magnet should be mounted on the lowest floor. Each successively larger magnet
should be mounted on the next highest floor. For example:
Landing #
1
2
3
4
5
The magnets are mounted on the perforated tape as follows:
1. The elevator is moved level with the lowest floor on inspection.
2. Next, make a mark on the tape even with the top of the encoder assembly back
plate.
3. The top of the magnet is then placed 9 inches below the scribe mark and to the
right of the perforated holes. The side edge of the magnet should line up as close
as possible to the holes in the tape without actually covering any part of the holes
in the tape.
Note:
If the floor position magnet is designated as an express zone magnet, it should be
mounted in the same vertical position, but on the left side of the tape so the door
zone sensors will not sense a door zone at that floor.
Express Zone Magnets designate a position output, but not a floor stop. Example -
This would be used to indicate an "X" for a blind hatch. Place magnets for express
zones toward the middle of the zone.
4. The elevator is then moved up to the next floor and steps 2 and 3 are repeated.
This continues until the last floor is reached.
Revision: AA 2.2
Microflite Ultra 2000
Magnet Length ( in inches)
6 ½
7
7 ½
8
8 ½
Printed 03 - 15 - 03 5 - 3