1 Introduction1-4 VL3622/VL4222/VL50221.2 Safety informationThis section contains detailed instructions on the operation and maintenance of this machine. To achieveoptimum utility of this device, all operators should carefully read and follow the instructions in this manual.Please read the following section before connecting the machine to the supply. It contains importantinformation related to user safety and preventing equipment problems.Please keep this manual in a handy place near the machine.Make sure you observe all of the precautions appear in each section of this manual.2 NoteSome parts of the contents of this section may not correspond with the purchased product.Warning and precaution symbolsThe following indicators are used on the warning labels or in this manual to categorize the level of safetywarnings.7 WARNINGIgnoring these warnings could cause serious injury or even death.% Do not ignore these safety advices.7 CAUTIONIgnoring this cautions could cause injury or damage to property.% Do not ignore these safety advices.Meaning of symbolsDisassemble and modification7 WARNINGIgnoring these warnings could cause serious injury or even death.% Do not ignore these safety advices.Symbol Meaning Example MeaningA triangle indicates a danger againstwhich you should take precaution.This symbol warns against possiblecauses of burns.A diagonal line indicates a prohibitedcourse of action.This symbol warns against dismantlingthe device.A solid circle indicates an imperativecourse of action.This symbol indicates you must unplugthe device.Warning Symbol• Do not attempt to remove the covers and panels which have been fixed to the product.Some products have a high-voltage part or a laser beam source inside that couldcause an electrical shock or blindness.• Do not modify this product, as a fire, electrical shock, or breakdown could result. If theproduct employs a laser, the laser beam source could cause blindness.
