float switches

Mechanical Float Switch

Mechanically activated float switches offer a reliable low current control for dewatering applications.

How It Works

The mechanical float switch control will turn ON (close) when the float tips 45° above -horizontal, indicating a high level, and turns OFF (open) when the float switch drops 45° below horizontal. Reference Figure 6 and Figure 7. Maximum pumping range is 120 degrees. See Figure 5 below.

Figure 5. Pumping Range (Float Switch)

Pumping Range

The pumping range of the pump is determined by the float switch tether cord. Use Table 3 as guide line to determine your required pumping range. Pumping ranges are based on non-turbulent conditions. Range may vary due to water temperature and cord shape. Please note as the tether length increases, so does the variance of the pumping range.

Design Features

Float switch housings are constructed of high-impact, corrosion resistant polypropylene with mechanically activated, snap action contacts.

„„Suitable for most liquid environments. „„Hermetically sealed.

„„Thick-walled non-corrosive PVC plastic enclosure.

„„Pressure tested to 30 ft. (9 meters).

„„Standard SJO, 16-gauge, 2 conductor cord (20 ft./6.09 m).

Figure 6. Float Switch (Closed)

Figure 7. Float Switch (Open)

Table 3. Pumping Range

Tether Length

2 in.

4 in.

6 in.

8 in.

10 in.

12 in.

14 in.

16 in.

5.08 cm.

10.16 cm.

15.24 cm.

20.32 cm.

25.4 cm.

30.48 cm.

35.56 cm.

40.46 cm.

 

Pumping Range

6 in.

10 in.

14 in.

18 in.

22 in.

27 in.

31 in.

35 in.

15.24 cm.

25.4 cm.

35.56 cm.

45.72 cm.

55.88 cm.

68.58 cm.

78.74 cm.

88.9 cm.

page 14 — st3020b1/BCUL Sub. pump • operation and parts manual — rev. #2 (10/28/10)

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Multiquip st3020bcul, st3020b1 manual Float switches, Mechanical Float Switch, How It Works, Pumping Range, Design Features

st3020bcul, st3020b1 specifications

The Multiquip ST3020B1 and ST3020BCUL are robust and efficient generators designed to meet the power needs of various applications. These models are particularly popular among contractors, events, and emergency services due to their reliability and high performance.

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