Receipt of delivery vacon • 15
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
3
3.2 Storage and shipping
If the AC drive is to be kept in store before use make sure that the ambient conditions are acceptable:
Storing temperature –40…+70
°C (no cooling liquid inside cooling element allowed below 0 ºC
Relative humidity <96%, no condensation
If the storage time exceeds 12 months the electrolytic DC capacitors need to be charged with
caution. Therefore, such a long storage time is not recommended. See Chapter 9.3 and the VACON
®
NX Liquid-Cooled Drives Service Manual for instructions on charging. See also Chapter 3.3.
Warning: Always remove all cooling agent from the cooling element(s) before shipping to avoid
damage caused by freezing.
3.3 Maintenance
In case the AC drive is used in conditions with temperatures below the freezing point and the liquid
used for cooling is likely to freeze, be sure to empty the cooling element if the AC drive must be
moved or if it is taken out of use for a longer time. See also Chapter 3.2.
It may also be necessary to clean up the coolant ducts in the cooling element. Contact the factory
for more information.
The instructions for the cooling system provided by its manufacturer must be followed.
NOTE! The content of the maintenance and intervals may vary depending on ambient conditions,
assembly and application.
Table 2. VACON
®
NX Liquid-Cooled AC drive maintenance program, general
Inspection
target
Inspection
intervals
Service schedule Proactive maintenance actions
Conditions of
installation
environment
1 year 1 year
Check that installation and environ-
ment conditions are within manufac-
turer’s specification, in respect, for
example, heat, dust, moisture, vibra-
tion. Take corrective actions based on
findings.
Cleaning 1 year 1 year
If needed, clean the product with an
antistatic vacuum cleaner.
Cleanliness of
cooling tunnel
1 year 1 year
Check/evaluate the cleanliness of the
cooling tunnel for air cooled drives.
Cleaning if necessary.
Air filters 3 months
• 3 months in
demanding
environment
• 1 year in typical
environment
NOTE! VACON
®
NX Liquid-Cooled AC
drives do not include air filter. They
may be included in the enclosure
solution. The inspection and replace-
ment intervals of filters depend on
the environment. Replace at least
once a year.
Sealings 1 year Based on inspection
Check the sealings for IP21 or IP54
AC drives. Check visually the cable
bushing. Take corrective actions
based on findings.
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