MCU14/0056 Response to SARA - Consulting Report

          Installation
          The control unit has been designed to be located indoors and outdoors. It should be wall mounted and
          positioned such that the LED display and push switches on the front panel can be readily seen and
          accessed. The unit can be secured to the wall by using the four mounting holes provided. Included within
          the control is an intrinsically safe circuit (approved according to ATEX Directive 94/9/EC), to which the
          probe unit is connected. The probe and the circuit are intrinsically safe and are attached to a remote control
          unit.




          Figure 2.5 – Automatic closure device within the SPEL Tank


          The control unit should be connected to a suitable 220/240V AC supply and fused at 3 amps. This
          appliance must be earthed. Wiring from the control unit to the probe junction box in the separator chamber
          requires a 3-core screened, 0.75 mm core section cable and maximum cable length is 300 metres. A 5
          metre 3-core probe cable is normally fitted to the junction box and the probe. After all connections have
          been made, the cables must be secured by tightening each entry gland.


          Certificate of conformity
          The alarm device has been approved to be used in explosion-hazardous areas. The control unit and probe
          are approved according to ATEX Directive 94/9/EC. These approvals mean that the probes can be
          installed in Zone 0, which is continuously explosion-hazardous.




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