User guide

PAGE 28

Wastewater

Goulds Water Technology, Bell & Gossett,

Red Jacket Water Products, CentriPro

There are two basic switches used in sewage and efﬂuent systems. Single-action or narrow-angle ﬂoat switches perform one function

(on or off). They operate over a range of 15º. Wide-angle, or double-action ﬂoat and diaphragm switches perform two functions (on

and

off). Wide-angle ﬂoat switches operate over a 90º range and diaphragm switches on a 6” rise in water level.

Control panel wiring diagrams refer to 3 ﬂoat and 4 ﬂoat systems, this terminology refers to the use of single-action switches. The fol-

lowing chart shows how many of either type switch to use with different control panels.

Duplex Control Panels

Typical Duplex panels use the following switch set-ups depending on the switch type you use. Most Duplex control panels have a stan-

dard high level alarm circuit with a ﬂashing light, most have a horn or bell. Once it turns On - the alarm must be manually reset (turned

off) on Duplex panels.

Using a Single-action or Narrow-angle Switch requires:

Three Float Panel Wiring Four Float Panel Wiring

#1 Bottom Pumps Off #1 Bottom Pumps Off

#2 Middle 1st Pump On #2 2nd 1st Pump On

#3 Top 2nd Pump & Alarm On #3 3rd 2nd Pump On

#4 Top Alarm On

Using Double-Action or Wide-Angle Switches; A2D23W, A2E21, A2E22, A2E23,

A2D11, A2D31 or A2S23 requires:

Three Float Panel Wiring Four Float Panel Wiring

#1 Bottom 1st Pump On/Both Off #1 Bottom 1st Pump On/Both Off

#2 Top 2nd Pump and Alarm On #2 Middle 2nd Pump On

#3 Top Alarm On

Simplex Control Panels

Only some Simplex panels have alarms. This is why the switch quantity requirements vary by simplex panel model.

All of our SES panels have high level alarms.

Using a Single-action or Narrow-angle Switch requires:

Simplex Panel with Alarm Simplex Panel with No Alarm

#1 Bottom Pump Off #1 Bottom Pump Off

#2 Middle Pump On #2 Top Pump On

#3 Top Alarm On/Off

Using Double-Action or Wide-angle Switches requires:

Simplex Panel with Alarm Simplex Panel with No Alarm

#1 Bottom Pump On/Off #1 Bottom Pump On/Off

#2 Top Alarm On/Off

NOTE: 1

pump may also be referred to as “Lead” pump,

pump may be called “Lag” pump.

Sewage Control Panels and Switches