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AC90 TENSION CONTROL FREQUENCY INVERTER MANUAL
8.1 Guarantee time and range
Guarantee time
Users can enjoy the following "three guarantee" service from the day of buying products if meeting products quality
problem:
We guarantee for repair, return and replacement for one month after delivery;
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We guarantee for repair and replacement for two months after delivery;
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We guarantee for repair for eighteen months after delivery;
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The articles above do not apply to export.
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Guarantee range
Installation and debugging：In principle, it should be carried by users. Our company provides technical support. But we
can afford installation and debugging service with charge.
On-site diagnosis: In principle, it should be carried by users. Our company gives technical support. But we can afford
on-site diagnosis service with charge. According to diagnosis, if it is our liability, it will be free.
Malfunction maintain: While meeting malfunction, if it is quality problem and within guarantee time, we will repair free of
charge. The malfunctions, caused by the reasons mentioned as follows, can only enjoy the paid service even if the
product under warranty:
The malfunctions caused by improper storage or faulty operation which are not in compliance with this user
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manual.
The malfunctions caused by unauthorized transformation.
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The malfunctions caused by over-range operation.
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Have over guarantee time.
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The malfunctions caused by nature causes.
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8.2 Liability exemption
Our company only takes on the liability according to our guarantee time and range. If you need more liability guarantee,
you should buy proper commercial insurance from insurance company in advance. The other extended loss caused by
malfunctions of our product is not within our guarantee range. Cases as follows, regardless of whether it is within
guarantee time,it is not within our guarantee range. If need service, you has to pay for it.
The malfunctions caused by improper storage or faulty operation.
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The malfunctions caused by unauthorized transformation.
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The malfunctions caused by over-range operation.
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Have been over guarantee time.
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The malfunctions caused by nature causes.
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User has not paid off the payment according to the contract.
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8.3 Product application
This product is not designed and produced for the case of vital importance.
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If need to apply this product in manned mobile machine, medical, aerospace , unclear energy, electric power,
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devices or system for submarine communications transit, please contact the sales department of our company.
We do not take on the liability of the accident while this product is used in these cases without authorization.
This product is produced under strict quality management. But we can not ensure that there will be no
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malfunction. If the user requires more safety requirement and reliability, standby device should be deployed. If
the user need more guarantee, proper commercial insurance should be considered.
Chapter 8 Quality Guarantee
BASIC OPERATION AND TRIAL RUN
70
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