Danfoss iC7 Series Installation Manual page 16

Installation Guide | iC7 Series Air-cooled LCL Filter OF7Z3
4 Maintenance
Preventive Maintenance Recommendations
4.1
Generally, all technical equipment needs a minimum level of preventive maintenance. Regular maintenance is recommended to ensure
trouble-free operation and long life of the product. It is also recommended, as a good service practice, to record a maintenance log with
counter values, date, and time describing the maintenance and service actions.
Danfoss recommends the following inspections and service intervals for the product.
The service schedule for part replacements can vary depending on operating conditions. Under specific conditions, the
combination of stressful operation and environmental conditions work together to reduce the lifetime of the components
significantly. These conditions can include, for example, extreme temperature, dust, high humidity, hours of use, corrosive
environment, and loading.
For operation in stressful conditions, Danfoss offers the DrivePro® Preventive Maintenance service. DrivePro® services extend the lifetime
and increase the performance of the product with scheduled maintenance including customized part replacements. DrivePro® services
are tailored to your application and operating conditions.
Table 5: Maintenance Schedule for Air-cooled Filters
Component Inspection
interval
Installation
Visual inspection 1 year
Cable routing 1 year
Power cabling 1 year
Control wiring 1 year
EMC consideration 1 year
Grounding 1 year
Proper clearances 1 year
16 | Danfoss Drives Oy © 2024.11
Service schedule
(1)
–
–
–
–
–
–
–
NOTICE
Preventive maintenance actions
(2)
Check for the unusual, for example, for signs of overheating, aging,
corrosion, and for dusty and damaged components.
Check for parallel routing of motor cables, mains wiring, and signal
wiring. Avoid parallel routing. Avoid routing cables through free air
without support. Check for aging and wearing of the cable insula-
tion.
Check for loose connections, aging, insulation condition, and
proper torque to the drive connections. Check for proper rating of
fuses and continuity check. Observe if there are any signs of oper-
ation in a demanding environment. For example, discoloration of
the fuse housing can be a sign of condensation or high tempera-
tures.
Check for tightness, damaged or crimped wires, or ribbon wires.
Terminate the connections correctly with solid crimped ends. The
use of shielded cables and grounded EMC plate, or a twisted pair is
recommended.
Inspect the installation wiring regarding the electromagnetic ca-
pability and the separation distance between control wiring and
power cables.
The drive system requires a dedicated ground wire connecting
the drive, the output filter, and the motor to the building ground.
Check that the ground connections are tight and free of paint or
oxidation. Daisy-chain connections are not allowed. If applicable,
braided straps are recommended.
Check that the required external clearances for proper airflow for
cooling are followed according to the type of the drive. For clear-
ances, refer to the local design regulations.
Maintenance
AN447722806364en-000201 / 172K1109B