ET/EP/EH Series Intelligent Flexible Driver Manual
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Chapter 9 Care and Maintenance
This chapter contains the general information on care and maintenance.
◎
Maintenance operation should be carried out after the input power supply is
disconnected for 10 minutes. At this time, the charging indicator is completely off
or the DC bus voltage is lower than 24VDC.
Otherwise, there is a risk of electric shock.
◎ Never modify the inverter by yourself.
Otherwise, there is danger of electric shock and personal injury.
◎ Please contact professional electrical engineers for maintenance. Do not leave
wire ends or metal objects inside the inverter.
Otherwise, there is a risk of fire.
◎ Do not change the wiring and disconnect the terminals when the power is on.
Otherwise, there is a risk of electric shock.
9.1 Warranty period
The company will provide warranty services for the inverter (main body) in the following cases:
In case of any failure or damage in normal use, the manufacturer shall be responsible for the
warranty within the warranty period (from the date of delivery). The reasonable maintenance fees
will be charged after expiration date of the warranty period.
However, even during the warranty period, the failure caused by the following reasons will be
charged:
1) Problems caused by non-use in accordance with the instruction manual or self-repair or
modification without permission.
2) Problems caused by use beyond standard specifications.
3) Drops after purchase or damage during transportation.
4) Damage caused by earthquake, fire, flood, lightning strike, abnormal voltage or other
natural disasters and the causes associated with disasters.
9.2 Product inquiry
In case of any product damage, failure or other problems, please contact our office or after-sales
service department for the following items.
Inverter model
Production serial number
Date of purchase
Problems requiring contacting include: damage, unclear problems and faults.
9.3 Routine inspection
When the inverter is powered on and running, its shell should not be removed, and the operation
status of inverter should be checked by external visual inspection. The following items can be
checked in routine inspection:
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