Chapter 3—Product Overview
DG1 Series VFD MN040002EN—March 2014 www.eaton.com 15
Maintenance and Inspection
DG1 frequency inverters are maintenance free. However,
external influences may affect the function and the lifespan
of the DG1 frequency inverter. We therefore recommend
that the devices are checked regularly and the following
maintenance measures are carried out at the specified
intervals.
If the DG1 frequency inverter is damaged by external
influences, contact Eaton Technical Service.
Table 13. Maintenance Measures and Intervals
Storage
If the frequency inverter is stored before use, suitable
ambient conditions must be ensured at the site of storage:
●
Storage temperature: –40°F to 158°F (–40°C to 70°C)
●
Relative average air humidity: <95%, noncondensing
(EN 50178)
●
To prevent damage to the DC link capacitors, storage
times longer than 12 months are not recommended
Charging the Internal DC Link Capacitors
After extended storage times or extended downtimes during
which no power is supplied (>12 months), the capacitors in
the internal DC link must be recharged in a controlled manner
in order to prevent damage. To do this, the DG1 variable
frequency drive must be supplied with power, with a
controlled DC power supply unit, via two mains DC bus
connection terminals. Please consult the factory for detailed
instructions.
Service and Warranty
In the unlikely event that you have a problem with your DG1
frequency inverter, please contact your local sales office.
When you call, have the following information ready:
●
the exact frequency inverter part no. (see nameplate)
●
the date of purchase
●
a detailed description of the problem that has occurred
with the frequency inverter
If some of the information printed on the nameplate is not
legible, please state only the information that is clearly
legible. This information can also be found on the cover of
the control terminals.
Information concerning the guarantee can be found in the
Eaton General Terms and Conditions of Sale.
Maintenance Measure Maintenance Interval
Clean cooling vents (cooling slits) If required
Check the fan function 6–24 months (depending
on the environment)
Filter in the switching cabinet doors
(see manufacturer specifications)
6–24 months (depending
on the environment)
Check the tightening torques of the terminals
(control signal terminals, power terminals)
Regularly
Check connection terminals and all metallic
surfaces for corrosion
6–24 months (depending
on the environment)
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