ST-2005 SERIES SUB. PUMP — FLOAT SWITCHES

Float Switch Theory

Mercury monitoring is a mercury-switch actuated, liquid level control that has proven to be more economical and longer lasting than other types of liquid-level control systems, easily replacing and improving upon diaphram switches, air bubble systems and electro-mechanical switches most often relied upon in the past.

How It Works

There is a tilt-sensitive mercury switch hermetically sealed within each float. As the liquid level (water) rises or falls, the float changes its angle until the mercury switch makes (close, Figure 4) or breaks (open, Figure 5) the circuit. Maximum pumping range is 120 degrees. See Figure 3 below.

Figure 3. 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-turbulentconditions. 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

Constructed of rigid, durable ABS polymer ultrasonically welded. The all-steel mercury switch is held by positioning pins. Interior is filled with cell foam.

■Suitable for most liquid environments.

■Hermetically sealed.

■Thick-walled non-corrosive PVC plastic enclosure.

■Pressure tested to 60 ft. (18.2 meters).

■Mercury switch reliability, proven to 500,000 cycles.

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

Figure 4. Float Switch (Closed)

Figure 5. 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.

40.64 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 12 — ST-2005 SERIES SUBMERSIBLE PUMPS — OPERATION & PARTS MANUAL — REV. #3 (09/21/04)

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Multiquip ST-2005 manual Float Switch Theory, How It Works, Design Features
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ST-2005 specifications

The Multiquip ST-2005 is a compact yet powerful generator that stands out in the market for its reliability and efficiency, making it a popular choice for construction sites, outdoor events, and emergency power needs. Engineered to deliver dependable electricity, it is equipped with advanced features and technologies that cater to both professional and personal use.

One of the standout features of the ST-2005 is its robust 4-stroke engine, which provides an impressive output of 2000 watts. This engine is designed with fuel efficiency in mind, allowing users to run their electrical tools and devices for extended periods without frequent refueling. The generator’s fuel tank has a capacity of 1.8 gallons, providing an operating time of up to 10 hours on a quarter load, a significant advantage for users requiring consistent power throughout the day.

Portability is another key characteristic of the Multiquip ST-2005. Weighing in at just around 50 pounds, this generator features a compact design that includes a sturdy frame and integrated wheels, allowing for easy transportation to various job sites or events. The foldable handle adds to its portability, making it convenient to store when not in use.

The ST-2005 incorporates state-of-the-art technologies that enhance its performance and usability. This includes an integrated inverter system that ensures clean and stable power output, making it suitable for sensitive electronic devices such as laptops and smartphones. Along with this, the generator features a low oil shutdown mechanism, which automatically turns off the engine if the oil level drops below a safe threshold, thereby protecting the engine from damage.

User-friendly control panels are another hallmark of the Multiquip ST-2005. The generator comes equipped with multiple output outlets, including 120V and 12V options, allowing users to connect a variety of devices simultaneously. Additionally, an easy-to-read watt meter provides real-time information on power usage, ensuring that users can efficiently manage their energy consumption.

In conclusion, the Multiquip ST-2005 is designed for durability, performance, and ease of use. With its powerful engine, portability, advanced inverter technology, and user-friendly features, it serves as an invaluable tool for anyone needing reliable power on the go, making it a worthy investment for both professionals and home users alike.
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