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Page 10
Multilift Installation Guide Part No. 000643, 26-m02-2013
Step 7
Adjust limit switches (as required)
Adjust the limit switches (as required).
Procedure
The illustration below shows an example of the limit
switches.
Figure 10
Limit switches
DNL
UNL
UFL
DZ
(optional)
Note that there is a lateral adjustment on the track that
supports the limit switches. This adjustment brings the
switches closer to or further away from the platform cam.
Double-check this adjustment.
Figure 11
Limit switch lateral adjustment
Up normal limit (UNL) switch adjustment
Adjust the Up Normal Limit (UNL) switch to the proper
height to stop the lift level with the landing.
Up final limit (UFL) switch adjustment
Adjust the Up Final Limit (UFL) switch above the Up
Normal Limit (UNL) switch in order to shut the entire lift
down if it ever goes beyond the top landing. This switch
needs to be activated by the platform before any
mechanical contact occurs between the internal
components of the lift (recommended distance is less than
2 inches).
Down normal limit (DNL) switch adjustment
Adjust the Down Normal Limit (DNL) switch to the proper
height to stop the lift just above ground level.
Door zone (DZ) switch adjustment – optional
(mechanical lock only)
On lifts where a mechanical lock is used on a landing door,
a Door Zone (DZ) switch is required to allow the lift to run
during the unlocking process of the door. Adjust this switch
to respect the following sequence as the lift travels toward
a landing:
a. Activation of the Door Zone (DZ) switch.
b. Unlocking of the door.
c. Activation of either the Up Normal Limit (UNL)
switch or the Down Normal Limit (DNL) switch.