Motor Controllers AC Variable Frequency Drives Type VariFlex
3
RVLF
130 Specications are subject to change without notice. Pictures are just an example. For special features and/or customization, please ask to our sales network. 13/12/2017
5.4. Routine and Periodic Inspection
To ensure stable and safe operations, check and maintain the inverter at regular intervals.
Use the checklist below to carry out inspection.
Disconnect power after approximately 5 minutes to make sure no voltage is present on the
output terminals before any inspection or maintenance.
Items Details
Checking period
Methods Criteria Remedies
Daily 1Year
Environment & Ground connection
Ambient
conditions at the
installation
Conrm the
temperature and
humidity at the
machine
•
Measure with
thermometer and
hygrometer
Temperature:
-10~+40°C
(14~+120°F)
Humidity: below
95%RH
Improve the
ambient or
relocate the drive
to a better area.
Installation
grounding
Is the grounding
resistance
correct?
•
Measure the
resistance with a
multi-tester
200Vclass: below
100Ω
Improve the
grounding if
needed.
Terminals & Wiring
Connection
terminals
Any loose parts
or terminals?
•
Visual check.
Check with a
screwdriver
Correct
installation
requirement
Secure terminals
and remove rust
Any damage to
the base ?
•
Any corroded
Terminals?
•
Wiring
Any broken
wires?
•
Visual check
Correct wiring
requirement
Rectify as
necessary
Any damage
to the wire
insulation?
•
Voltage
Input power
voltage
Is the voltage of
the main circuit
correct?
•
Measure the
voltage with a
multi-tester
Voltage must
conform with the
spec.
Improve input
voltage if
necessary.
Circuit boards and components
Printed circuit
board
Any
contamination
or damage to
printed circuit
board?
•
Visual check
Correct
component
condition
Clean or replace
the circuit board
Power
component
Any dust or
debris
•
Clean
components
Check resistance
between
terminals
•
Measure with a
multi-tester
No short circuit
or broken circuit
in three phase
output
Consult with the
supplier
Cooling System
Cooling fan
Unusual vibration
and noise?
•
Visual and sound
check
Correct cooling
Consult with the
supplier
Excessive dust
or debris
•
Visual check
Clean the fan
Heat sink
Excessive dust
or debris
•
Clean up debris
or dust
Ventilation Path
Is the ventilation
path blocked?
• Clear the path