IMO PRF, PRF EX 009 312436
Table Of Contents
- 1 General information
- 2 Information on the explosion-protection devices
- 3 Important safety information
- 4 Warranty
- 5 Delivery, transport, storage
- 6 Description
- 7 Name plate and type key
- 8 Marking
- 9 Accessories
- 10 Installation
- 11 Electrical connection
- 12 Commissioning
- 13 Operation
- 14 Troubleshooting/maintenance/repair
- 15 Cleaning
- 16 Deinstallation/dismantling
- 17 Disposal
- 18 Commissioning Report
Electrical connection |
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11.1 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!
11.2 Variable-speed fans
Warning
Resonant frequencies may result in increased vibration in certain speed ranges. These vibrations may
destroy components.
♦ Only operate the fan outside these speed ranges.
♦ Pass through these speed ranges so quickly that any vibration cannot exceed the admissible resonant
frequency values.
♦ Observe the operating instructions of the frequency converter.
Caution
Damage as a result of incorrect commissioning of the frequency converter.
♦ Install the fan and frequency converter as near as possible to one another.
♦ Use shielded cables.
♦ All components (fan, frequency converter and motor) must be grounded.
♦ We recommend using all-pole sinus filters.
♦ Avoid running the fan via the frequency converter below 10 Hz.
♦ Heating of the motor due to use of a variable frequency drive must be checked in the application by the
customer.
♦ Never exceed the maximum impeller rotation speed indicated on the name plate of the fan.
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