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VFC 3210
16.3 Periodic Inspection
In addition to daily inspection, periodic inspection of frequency converters is al-
so necessary. The inspection cycle should be less than 6 months. For operation
details, please see table below:
Inspection
Inspection item
category
Power supply
Voltage
Power cable
Power cable
Signal line
Signal line
Crimp terminal
Terminal
and cable / line
connection
Crimp terminal
and terminal block
Visual
appearance
Fan
Cooling system
(radiator, inlet, outlet)
Frequency
converter
Printed circuit board
Electrolytic capacitor
IGBT module
Connection
Accessories
Cable
Tab. 16-2: Periodic inspection list
DOK-RCON04-VFC3210****-IT01-EN-P
Inspection criteria
Specified in nameplate
No color change or damage
No loose connection
No deformation
No color change
or deformation
No blockage
or contamination
No blockage
or foreign matters
No dust or oil contamination
No discoloration or deforma-
tion
No leakage, color
change, crack or expansion
with safety valve shut down
no dust, cotton or oil around
the module
Module without discolora-
tion, bulge or crack
No loose connection
No color change or damage Replace cable
Bosch Rexroth AG
Maintenance
Solution
1P: 200...240 VAC
(-10 % / +10 %)
3P: 380...480 VAC
(-15 % / +10 %)
Replace cable
Replace signal line
Tighten crimp
and terminal screw
Contact with service
Replace fan
Eliminate blockage
and clean fan
Eliminate blockage
and clear foreign matters
Clean printed
circuit board
Replace capacitor (must be
operated by service engi-
neers)
Clear foreign matters or re-
place module
Tighten terminal screw
217/253
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