27
Temper
atur
e
Time
Hydraulic unit temperature during continuous use.
Hydraulic unit temperature when cooling after use.
Temperature at which the temperature switch prevents use.
Design and Function
3.11 Overheating protection
The hydraulic system is equipped with a thermostat which cuts control circuit power and
reduces the risk of damage to the motor if it overheats, which may occur during e.g. conti-
nuous, intensive use.
The amount of continuous work the liftgate is able to perform is influenced by ambient
temperature and the load the liftgate is exposed to. Generally speaking, it takes conside-
rably longer for the motor to cool down after use than the time spent working. Insufficient
pauses between intensive periods of work cause the motor to grow increasingly hot until
the thermostat cuts the control circuit and prevents further use. When the motor has coo-
led to a permissible temperature, the thermostat resets automatically and the liftgate can
be used again.
