sewage ejector system with only one wire

If there is continuity through the switch, it is a normally closed switch.Ĭheck the control panel/alarm installation instructions for correct terminal positions. If there is continuity through the switch, it is a normally open switch. NOTE: On an SPDT switch, the black and white wires are used for a N/O switch and the red and white wires are used for a N/C switch.Ĭheck the label on the float switch cable. A Normally Open (NO) float switch is used for high level alarm applications and Normally Closed (NC) float switch is used for low level alarm applications. Check the control panel/alarm installation instructions for correct wiring positions for power.Ĭontrol Switch: Make sure the float switch is the correct model for the application. Disconnect power before proceeding.Ĭontrol Panel/Alarm: Inspect the power cord for damage. (“ON” position is up for a normally open application or down for a normally closed application “OFF” position is down for a normally open application or up for a normally closed application) There may be a problem with the wiring, the control switch, or other panel components. If the meter reads continuity, return float to your supplier. Lift the black float up and leave gray float hanging down. Relay: To check the relay on pump up or pump down models, use a volt/ohm meter, touch one lead to the black wire and one lead to the white wire. For the Double Float® the gray float is always the top float and the black float is always the bottom float. Check the float for proper positioning, tether length, or obstructions which may have caused it to hang-up. Double-check your wiring against the wiring diagram on the installation instructions.įloat: Inspect float positioning. If so, there may be a problem with the wiring, the floats or the relay. Is Double Float® short cycling on one float? The resistance values are: 120 VAC Switch – 3.6 ohms resistance, 230 VAC Switch – 13.6 ohms resistance. For a switch with a plug, place leads as shown below. Disconnect the red and white wires, connect the volt/ohm meter leads to the wires. In the absence of a cord label the voltage of a Double Float® can be discovered by measuring the resistance of the relay coil inside the switch. A 230 VAC Double Float® will not operate on 120 VAC. A 120 VAC Double Float® will be damaged if 230 VAC is applied. The voltage of the switch is listed on the label attached to the cable.

Sewage ejector system with only one wire