Magnetic Autocontrol MHTM MicroDrive Access Series, Operating Instructions Manual

Page: 75 / 144

Barrier MHTM
TM
MicroDrive Access and Parking
Assembly and installation
5815,5013US / Version 05 75
8.14 Check and set the balancing springs in the lever system
Danger of crushing, lever system WARNING
Danger of crushing at opened barrier housing
at the lever system!
The lever system in the barrier housing can cause
serious crushing injuries!
– Balancing springs in the lever system must only
be checked and adjusted by specialised
personnel.
– Balancing springs must only be checked and
adjusted with the power supply turned off
– Wear protective gloves if necessary.
The lever system has balancing springs that exactly balance the
barrier arm weight. These balancing springs are pre-set in the
factory. The precise setting must be performed after assembly of
the barrier arm and before commissioning.
The lever force is determined not only by the spring tension but
also by the number of springs used and the spring rate.
MAGNETIC uses two spring types. Depending on application case,
you will have to set the spring tension, remove the springs, use
additional springs or use springs with a different spring rate.
→ Also see page 78, chapter 8.14.2.
In the "Power failure" menu, you can set the barrier behaviour in
case of voltage failure. The settings in this menu do not influence
the settings of the balancing springs.
→ See separate document
"Description of control units MGC and MGC Pro for MHTM
TM
MicroDrive barriers".