Sewage control panels and switches – Xylem Wastewater (Technical Manual) User Manual
Page 28
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
st
pump may also be referred to as “Lead” pump,
2
nd
pump may be called “Lag” pump.
Sewage Control Panels and Switches