Installation and operating instructions
Table Of Contents
- 1 General information
- 2 Important safety information
- 3 Warranty
- 4 Delivery, transport, storage
- 5 Description
- 6 Name plate and type key
- 7 Installation
- 8 Electrical connection
- 9 Commissioning
- 10 Operation
- 11 Troubleshooting/maintenance/repair
- 12 Cleaning
- 13 Deinstallation/dismantling
- 14 Disposal
- 15 Commissioning Report
Electrical connection |
7
8.1 Protecting the motor
Important
Damage to motor due to overcurrent, overload or short circiut.
♦ Lead-out temperature monitors must be integrated in the control circuit in such a way that, if a fault
occurs, the motor cannot switch on again automatically after it has cooled down.
♦ Motor lines and temperature monitor lines should be laid separately on principle.
♦ Without thermal protection: Use a motor protection switch!
Note:
In fans equipped with an EC motor, there is no additional motor protection needed. The motor protection is
integrated in the electronics of the motor.
Important
Damage to motor due to over temperature.
♦ To avoid too many starts and stops a falling delay time of minimum 5 minutes has to be realized in the
control circuit.
Table 5 Motor protection
Type
Motor protection
Thermal protection,
standard
Speed regulation
IV...
By customer
PTC
Possible via frequency converter
IV...(B)
IV...(F)
By customer- must be
bypassed in case of fire
without (PTC optional) Possible via frequency converter
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