13
DIAGNOSTICS AND TROUBLESHOOTING
9. Execute the procedures 2 and 3 of the Preventive Maintenance During Operation.
10. Clean the dust accumulated inside the control and high voltage cabinets as described next:
Heatsink ventilation system (fans, rectifier and inverter arm heatsinks): remove the dust accumulated on the heatsink fins using compressed
air.
Electronic boards: remove the dust accumulated on the boards using an anti-static brush and/ or low pressure ionized compressed air.
If necessary, remove the boards from the inverter.
WARNING!
Electronic boards have components sensitive to electrostatic discharges. Do not touch the components or connectors directly.
If necessary, first touch the grounded metallic frame or wear a proper grounded wrist strap.
Cabinet inner part and other components: remove the accumulated dust using a vacuum cleaner with a nonmetallic nozzle. Perform this
cleaning especially on the insulating materials that support energized parts to avoid leakage currents during operation.
11. Connection retightening: inspect all the electrical and mechanical connections and retighten them if necessary.
12. Reinstall all the removed components and connections in their respective places and follow the start-up procedures described in the
Chapter 10.3 ENERGIZATION, START-UP AND SAFE DE-ENERGIZATION on page 10-18 .
13.4 GENERAL WARRANTY CONDITIONS FOR MVW-01 FREQUENCY INVERTERS
MVW01
Weg Automação S.A, located at Av. Pref. Waldemar Grubba, 3000 in the city of Jaraguá do Sul – SC, provides warranty for defects in material
and workmanship for WEG frequency inverters under the following conditions:
1. For the effectiveness of this warranty, it is essential that the buyer carefully inspects the purchased inverter immediately after its delivery,
checking thoroughly its characteristics and installation, setting, operation and maintenance instructions. The inverter will be automatically
considered as accepted and approved by the buyer when no written notice is given by the buyer within at most 5 days after the delivery
date.
2. The total length of this warranty is of twelve months from the date of the supply by WEG or authorized dealer, proven through the
purchase invoice of the equipment, and limited to twenty four months from the product manufacturing date, which is stated on the label
attached to the product.
3. In case the inverter under warranty does not work properly or does not work at all, the warranty services may be performed during the
business hours at WEG’s sole discretion, at its headquarters in Jaraguá do Sul - SC, or at an Authorized Service Provider assigned by
Weg Automation.
4. The defective product must be available to the supplier for the required period to detect the cause of the failure and to perform the
corresponding repairs.
5. Weg Automação or an Authorized Service Provider will analyze the returned product, and, if any fault covered under the warranty is
observed, they will repair, modify or replace the defective inverter at their own discretion, at not costs to the buyer, except as indicated
in the Programming Manual available at www.weg.net
6. The responsibility for this warranty is limited exclusively to the repair, modification or replacement of the inverter supplied. Weg takes
no liabilities for personal injuries, damages to third parties, other equipment or installations, loss of profits, or any other incidental or
consequential damages.
7. Other expenses, such as freights, packaging, disassembly/assembly and parameterization costs, will be paid exclusively by the buyer,
including all working hours, transportation/accommodation and meal expenses for technical personnel, when service is needed and/or
requested at the costumer’s premises.
8. This warranty neither covers the normal wear of the product or equipment, nor damages resulting from incorrect or negligent operation,
incorrect parameterization, improper maintenance or storage, abnormal operation in disagreement with the technical specifications,
poor quality installations, or any influence of chemical, electrochemical, electrical, mechanical or atmospheric nature.
MVW01 | 13-6
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