F0002-AA007595-AAR-10-SMP · MCU14/0102.05

            Operation
            The probe is freely suspended in the probe protection tube in the separator at the correct level. When the oil-
            layer or depth of hydrocarbons reaches the predetermined level, the top of the probe will be immersed in the
            oil, breaking the circuit and activating the alarm. It is a ‘fail-safe’ system providing complete assurance that it is
            operative. If a fault occurs, the fault lights activate immediately.

            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 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.




HEAD OFFICE                  POSTAL                           EMAIL                           ABN                           spel.com.au
100 Silverwater Road         PO BOX 7138                      [email protected]               83 151 832 629
Silverwater NSW 2128         Silverwater NSW 2128