Taylor-Dunn B0-012-10 Operation, T Roubleshooting And Replacement Parts Manual page 71

Pot Box module
The pot box module is used on vehicles that are to be operated in
areas with large magnetic fields.
The linkage to the pot box should be adjusted so that the FS-1
switch closes just as the pedal is depressed and the output is at
5K with the pedal fully depressed.
NOTE: The magnetic sensor module and pot box
module are not interchangeable.
Maintenance, Service, and Repair
Pot Box Module
1
2
8
5K
9
4
FS-1
5
Front Axle
Page 3