Storage; Cooling Circuit; Fault Correction; Disposal - KEB COMBIVERT F5 Instruction Manual

A.4.2

Storage

The DC link of the KEB COMBIVERT is equipped with electrolytic capacitors. If the electrolyt-
ic aluminium capacitors are stored de-energized, the internal oxide layer is removed slowly.
Due to the leakage current the oxide layer is unrenewed. If the capacitor starts running with
rated voltage there is a high leakage current which can destroy the capacitor.
In order to avoid defectives, the KEB COMBIVERT must be started up depending on the
storage period in accordance with the following specification:
Storage period < 1 year
• Start-up without special measures
Storage period 1...2 years
• Operate frequency inverter one hour without modulation
Storage period 2...3 years
• Remove all cables from the power circuit; especially of braking resistor or module
• Open control release
• Connect variable transformer to inverter input
• Increase variable transformer slowly to indicated input voltage (>1 min) and remain at
least on the specified time.
Storage period > 3 years
• Input voltages as before, however double the times per year. Eventually change capac-
itors.
After expiration of this start-up the KEB COMBIVERT can be operated on nominal rating con-
ditions or delivered to a new storage.
A.4.3

Cooling circuit

The cooling circuit must be completely empty if a unit shall be switched off for a longer period.
The cooling circuit must be blown out additionally with compressed air at temperatures below
0°C.
A.4.4

Fault correction

A defective device should only be repaired by KEB or an authorized partner. Defective com-
ponents, modules or options may only be replaced by original parts. The device must be
returned in original packaging with a detailed bug report.
A.4.5

Disposal

Defective devices which should not be repaired or which are not safe because of their service
life are applied as electronic waste and must be disposed as hazardous waste according to
the local regulations.
Voltage class
230 V
400 V
Input voltage
0...160 V
160...220 V
220...260 V
0...280 V
280...400 V
400...500 V
Annex
Residence time
15 min
15 min
1 h
15 min
15 min
1 h
GB - 33