Autoquip FREIGHTLIFT FL4M - Manual (Page 71)

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f. While still holding the actuator in place with the needle nose pliers, tighten
the switch arm onto the actuator with the socket head cap screw provided
g. You can now release the needle nose pliers from around the actuator
NOTE: To change the actuation direction of the switch, remove the switch head. Change
the switch actuator to the desired actuation direction, then re-tighten the (4) machine
screws holding the switch head to the switch body. (Reference Figure 37)
3. Repeat step 2 on the other sensing switch assemblies.
4. After installing the slack chain sensing switches, you must test them to make sure
they are adjusted and set correctly.
a. stack some empty pallets under the carriage, make sure this landing
surface is level
b. operate the lift and lower the empty carriage onto the pallets
c. when the carriage makes contact with the pallets and as soon as the lifting
chains go slack, the motor should stop.
CAUTION: Be ready to press the emergency stop button if the motor doesn’t
stop when chains go slack.
IF THE MOTOR STOPS WHEN CHAINS GO SLACK
5. A qualified electrician should, while referencing the lift’s electrical schematic, test
the electrical continuity of all four (4) slack chain sensing switches inside the lift’s
motor control panel to make sure that the contacts in all switches are in the open
condition. If all switches prove to be in the open condition, proceed to step 7. If
any switch has contacts which test closed, repeat steps 2 through 5 for those
switches.
IF THE MOTOR DOESN’T STOP WHEN CHAINS GO SLACK
6. If the emergency stop button had to be used to stop the motor, repeat steps 2
through 5 to further adjust & re-test all slack chain sensing switches.
INSTALLATION INSTRUCTIONS