28OPERATION OF THE SYSTEM WTC 600 LP / MPService Handbook 08.20043.3.2 Electrical Connections3.3.2.1 Pressure-increase Pump230 V external, via connection cable.3.3.2.2 Preliminary FilterIn delivery condition, the preliminary filters are connected to the power outlets (1/f) on the rearside of the RO equipment.3.3.2.3 Metering StationThe pumps of the projected metering stations are connected to the power outlets (1/g).The cable from the float switch must be inserted in the metering pump unit.Figure 12 Alarm output and digital input of the metering pumpsAlarm output(empty alarm)Digital input(release)For connection of the control cables in theelectrical switching cabinet, the blindconnections in the flange plate (13/4) arereplaced by the enclosed cable screw fittings(13/3).Connect the control cables in accordance withTable 13.The complete connectingdiagrams / plans (13/1) are locatedin the switch cabinet.The connections for signal inputsthat are not required are bridged atthe connecting terminal (13/2).Figure 13 Connections, metering stations214321NOTENOTENOTE
