9
TOP unit heaters
1.53
Unit heaters (2-stage three-phase motor/1-stage AC single-phase motor/continuously variable EC single-phase motor)
Installation and operating instructions
Please note the following safety-relevant information
Disconnect all parts of the system that are being
worked on. Ensure that the system cannot be
accidentally re-connected!
Before commencing installation/maintenance
work, wait until the fan has come to a standstill
after the unit has been switched off. After
working on the unit, remove any tools, the short
circuit detector or other parts of the unit.
Caution! Pipes, casings and fittings can become
very hot or very cold depending on the
operating mode!
Caution! Wear gloves, safety shoes and suitable
protective clothing when transporting the unit!
Sharp edges cannot be ruled out despite care
during manufacture.
The operator of the unit is responsible for
the EMC conformity of the entire system in
accordance with the local applicable standards.
The terminals and connectors are still energised even when
the unit is switched off. Check whether the terminals and
connectors are de-energised with a two-pin voltage tester.
Only open the unit 5 minutes after all poles of the voltage
have been switched off.
The protective conductor carries high leakage currents
(depending on the frequency, intermediate voltage and motor
capacity). Therefore check EN-compliant earthing under test
conditions (EN 50 178, art. 5.2.11). Hazardous voltage can occur
at the motor housing without earthing.
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 various 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.
Summary of Contents for Lufterhitzer TOP Series
Page 39: ......
