Nederman FilterMax DX Series Instruction Manual

Nederman FilterMax DX Series Instruction Manual Manual pdf 13 page image

EARTH CONTROL MEASURING01483671 201910JP32301201000024Circuit cardFilterMax DXControl BoxGND1Earth control measuring must only be done by aperson with necessary knowledge of explosionproofed installations.IMPORTANT!All metal parts of the filter unit must be earthedreciprocally and connected to extern earth ontwo of each other independent points. To securethis, the following procedure must be followed.The control measuringUse an ohm-meter which at all measurings must indicate less than10 ohm. Make sure that there is a metallic contact between theactual component and the ohm-meter measuring tool.NB! The duct system must not be connected.1.A. Disconnect the net earth from GND 1.B. Measure between all components according to the listabove and GND 1.C. Measure and check if contact between incoming ductsystem and the free coupled incoming net earth.2.Connect incoming duct system (make sure that there is anearth connection between the duct system and FilterMax DX).A. Measure and check if contact between GND1 and extern net earth.B. Reconnect net earth to GND1.Connect outgoing duct system (make sure that there is anearth connection between the duct system and FilterMax DX) 3.Disconnect at earthcontrol measuringWhen the FilterMax DX has been installed and at maintenancework the earthing shall be measured. The measuring is donebetween GND1 (in the Control Box, see picute below) and thefollowing components on FilterMax DX:1. Inlet2. Cleaning access point (on the inlet)3. Dust collector4. Adapter for dust collector5. Filter cartridge6. Filter module7. Door8. Relief panel9. Dust feeder10. Adapter for dust feeder13