Start-up / Operation
Adjustment system - Installation Instructions
Page 40
7.3
Duty Cycle
The duty cycle refers to the time period in which a motor or system is in motion, compared with
the rest period.
The Height Adjustment System is not designed for continuous operation without rest periods. It is
designed for intermittent use and has a maximum 10% duty cycle. This means that after operating
the Height Adjustment System for two minutes, you must let it rest for 18 minutes before it can be
reused. It should be noted that the maximum period of use of the system is two minutes. The
limited duty cycle of 10% is stored as a security measure in the electrical controller system.
CAUTION
Danger posed by thermal energies
The motor housing may become hot if the operating time exceeds the duty cycle.
The duty cycle must not be exceeded in order not to damage the system. Exceeding the duty
cycle on a regular basis, can lead to system malfunction or damage to the lifting element mo-
tor(s) and/or electrical controller. Moreover, this could also result in the premature wear of sin-gle
components, thereby reducing the lifetime of the Height Adjustment System.
Ensure adequate ventilation to ensure sufficient heat dissipation from the components of the
Height Adjustment System and do not exceed the duty cycle.
7.4
Manual Switch
All functions of the Height Adjustment System can be controlled using the manual switch.
Figure 27 Simple manual switch UBM-F/2-p
Figure 28 Programmable manual switch UBS/6-LCD (optional)
