Table of Contents
Advertisement
9.5
Residual current circuit breaker
All-current-sensitive residual current circuit breakers are required for use in alternating-current systems with 50/60 Hz,
in combination with electronic devices such as EC motors, frequency converters or uninterruptible power supplies
(UPS).
9.6
Protecting the motor
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 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!
10
Commissioning
Warranty claims can only be made if commissioning work is carried out correctly and written evidence thereof is
provided.
It is recommended to fill out the commissioning report 16 Commissioning Report, page 16.
10.1 Safety information
♦ Commissioning may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page 1.
♦ Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 2.
10.2 Preconditions
♦ Installation and electrical connection have been
correctly performed.
♦ Residual material from installation and foreign objects
have been removed from the fan and ducts.
♦ Inlet and outlet are free.
♦ Safety devices have been fitted.
| 006
♦ Ground cable is connected.
♦ Cable glands are tight.
♦ Nominal current (from the name plate) is not
exceeded.
♦ Data on the name plate corresponds with the
connection data.
11
Commissioning |
Advertisement
Table of Contents
Troubleshooting
