Laserfiche WebLink
E <br />E <br />needs, two Zener Safety Barriers are used: Model ZBS•1 for liquid -only channel, and <br />ZSB-2 for vapor -only and liquid/vapor combination channel applications. The <br />following three different wiring schemes are available: <br />A. For Liquid -Only Channel: Use Model ZSB-1 Zener Safety Barrier. <br />ZSB-1 <br />Terminal <br />3 Motherboard terminal marked GREEN <br />4 Ground terminal block <br />7 Liquid sensor green wire <br />8 Liquid sensor black wire <br />For Vapor -Only Channel: Use Model ZSB-2 Zener Safety Barrier. <br />ZSB-2 <br />Terminal <br />Connect To <br />1 Motherboard terminal marked RED <br />2 Motherboard terminal marked WHITE <br />3 No Connection <br />4 Ground terminal block and Motherboard GREEN terminal <br />5 Vapor sensor red wire <br />6 Vapor sensor white wire <br />7 No Connection <br />. Vapor sensor black wire <br />For Vapor/Liquid Combination Channel: Use Model ZSB-2 Zener Safety <br />1 Motherboard terminal marked RED <br />2 Motherboard terminal marked WHITE <br />3 Motherboard terminal marked GREEN <br />4 Ground terminal block <br />5 Vapor sensor red wire <br />6 Vapor sensor white wire <br />7 Liquid sensor green wire <br />8 Liquid and vapor sensors black wire <br />III.6. MASTER RELAY CONTACT <br />The Leak Alert system provides a set of SPDT master relay contact for applications <br />such as remote alarm, automatic phone dialer, or pump shut down control, etc. This <br />master relay is mounted on the motherboard, and it responds to any alarm signal <br />from any of the individual monitoring channels. The relay contact is connected to a <br />terminal block marked COM. NC. and NO on the base plate. The contact rating is 5A <br />at 125VAC, <br />zM <br />