14
1.53
TOP unit heaters
Unit heaters (2-stage three-phase motor/1-stage AC single-phase motor/continuously variable EC single-phase motor)
Installation and operating instructions
In the event of a fault, the rotor and impeller can be energised.
Rotor and impeller are base-insulated.
Do not touch when fitted!
The fan runs when control voltage is applied or the saved fan
speed starts up automatically when mains power has failed.
Do not go near the hazard area of the unit.
High temperatures are produced at the fan's electronic
housing.
Burning hazard.
The fan is protected from blockage. Protective functions are
integrated depending on the fan type, which cause the fan to
switch off automatically in the event of diverse faults.
Please refer to the operating instructions for the respective
fan.
Please read these instructions in full to ensure correct and
proper installation and the correct operation of TOP unit
heaters.
9.2
Motor protection
9.2.1
AC fans
Thermal contacts (temperature detectors) are embedded
in the motor windings, which open when the maximum
winding temperature of 155°C is exceeded. Combined with
an appropriate protective switch, the motor is switched
off whenever it impermissibly heats up. The motor is thus
protected against overload operation, over- and undervoltage,
unacceptably high ambient temperatures and jammed rotors.
Thermal contacts meet the conditions for protection against
overloading of equipment with electric motor drive (VDE 0730).
Commercial motor protection switches or bi-metal trips are not
suitable as motor protection with multi-stage motors. Only
appropriately wired controllers or modules or a similar type of
switch may be used.
Single-phase controller
The thermal contacts switch off and lock the motor via
the single-phase controller whenever the motor heats up
inadmissibly.
Summary of Contents for Lufterhitzer TOP Series
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