INSTRUCTION MANUALfor „DELTAFAN” wall fans of the type: ***/R/*-*/**/***/Ex Page 4/14In no case should any objects be placed between the protection screen and rotor.Great caution should be exercised, because outside motor temperature can be high. Touching itcan cause burns.It is forbidden to use connectors, multiple sockets and extensions in order to connect the device tothe electric supply.The safe operation of electric devices in explosion endangered areas depends mainly on theirproper selection to explosion hazard conditions, correct installation and power supply, protectionagainst short-cuts and overloads, and then, on proper usage. If one of the conditions is notsatisfied, the safety will not be ensured or be very expensive to obtain.Electric devices marked with Ex, of proper parameters and certified as explosion-proof accordingto the ATEX 94/9/WE directive should be used in explosion endangered areas.3. GENERAL INFORMATIONA fan is a rotor device, which receives mechanical energy and by means of one or a few rotors equipped withblades uses the energy to constantly transfer a medium. Therewith, the value of transferred work per a massunit does not exceed the normal value of 25 [kJ/kg].Wall fans of the type ***/R/*-*/**/***/Ex from Deltafan are designed to operate in spaces, where there is adanger of explosive atmosphere occurrence as a result of the existence of gas, air, mist and vapour mixturesrated as the group II.The fans are included in the device group II category 2G. The devices are designed and produced according tothe requirements of the Directive 94/9/WE (ATEX) and harmonized standards assigned to the Directives:• PN-EN 60079-0:2009,• PN-EN 60079-7:2008,• PN-EN 13463-2010,• PN-EN 13463-5:2005,• PN-EN 14986:2009.Additional means were providing in the construction of fans to ensure enhanced safety in case of excessivetemperature, occurrence of arches and sparks both inside and outside of the motor, and outside elementsduring normal operation.The fans meets the temperature class of T3 and T4 – that is, the maximum temperature of any fan part in themost unfavourable but permissible conditions does not exceed 200°C and 135°C, respectively. The temperatureclass of a fan depends of an electric motor used in the fan.