Inspection And Replacement Of Consumable Parts; Storage; Inverter Warranty - Veikong VFD200A Series Operation Manual

8-2 Inspection and replacement of consumable parts

Some components in the inverter will wear or degrade during use. To ensure stable and reliable
operation of the inverter, preventive maintenance should be performed on the inverter and replace parts if
necessary:
Component Service Life
Fan 2 to 3 years
Electrolytic
4 to 5 years
capacitor

8-3 Storage

This product is best placed in the original packaging before installation. If the machine is not used for
the time being, in order to make the product meet the warranty of the company and future maintenance,
please pay attention to the following matters during storage.：
 Must be placed in a dirt-free, dry location
 The ambient temperature of the storage location must be in the range of -20 ° C to +60 ° C.
 The relative humidity of the storage location must be in the range of 0% to 95% without
condensation.
 Avoid storage in environments containing corrosive gases and liquids.
 It is best to store it properly on a shelf or countertop.
 Long-term storage will lead to deterioration of electrolytic capacitors. It is best to ensure that the
power is turned on within 2 years, and the power-on time is not less than 5 hours.

8-4 Inverter warranty

The company will provide repair services in the following cases:：
 If it fails or is damaged under normal use conditions：
1) During the warranty period (from within 18 months after delivery or within 1 year of delivery to
the end user), the company provides free repairs.
2) If it is more than 18 months, reasonable maintenance fees will be charged.
 Even within the warranty period, a certain maintenance cost should be charged for the failure caused
by the following reasons：
1) Failures caused by failure to use the operating manual or beyond the standard.
2) Failure caused by self-repair and modification without permission.
3) Failures caused by improper storage and improper handling.
4) The fault caused when the inverter is used for abnormal functions.
5) Machine damage due to fire, salt erosion, gas corrosion, earthquake, storm, flood, lightning,
voltage abnormality or other force majeure.
 Even if the warranty period is exceeded, the company also provides lifetime paid repair service.
Chapter 8 Inspection and maintenance
Possible Damage Reason
Bearing worn

Blade aging

Input power supply in poor quality

High ambient temperature

Frequent load jumping

Electrolytic aging

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Judging Criteria
Input power supply in poor quality

High ambient temperature

Frequent load jumping

Electrolytic aging

Whether there is liquid leakage.

Whether the safe valve has projected.

Measure the static capacitance.

Measure the insulating resistance.
