012. MAINTENANCE AND GUARANTEEThe N30O digital panel meter does not require any periodical mainte-nance.In case of some incorrect operations:1. From the Shipping Date, During the Period Given in theAnnexed Guarantee CardOne should take the meter down from the installation and return itto the Manufacturer’sQuality Control Dept.If the meter has been used in compliance with the instructions, theManufacturer warrants to repair it free of charge.2. After the Guarantee Period:One should turn over the meter to repair it in a certified serviceworkshop.The disassembling of the casing causes the cancellation of thegranted guarantee.Our policy is one of continuous improvement and wereserve the right to make changes in design and speci-fications of any products as engineering advances ornecessity requires and revise the above specificationswithout notice.