Multiquip ST6125G, ST4125G Float Switches, Mechanical Float Switch, How It Works, Pumping Range

Page 12

FLOAT SWITCHES

Mechanical Float Switch

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

How It Works

The mechanical fl oat switch control will turn ON (close) when the fl oat tips 45° above -horizontal, indicating a high level, and turns OFF (opens) when the fl oat switch drops 45° below horizontal. Reference Figure 4 and Figure 5. Maximum pumping range is 120 degrees. See Figure 3 below.

PUMP

ON 60

120

PUMP

OFF 60

SUBMERSIBLE

PUMP

Figure 3. Pumping Range (Float Switch)

Pumping Range

The pumping range of the pump is determined by the fl oat switch tether cord. Use Table 2 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).

CONTACTS

CLOSED

ON/OFF STEEL

RAMP BALL

Figure 4. Float Switch (Closed)

CONTACTS

OPEN

STEEL

ON/OFF

BALL

RAMP

Figure 5. Float Switch (Open)

Table 2. 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 12 — ST4125G/ST6125G SUBMERSIBLE PUMP • OPERATION MANUAL — REV. #0 (11/18/10)

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Contents Model ST4125G/ST6125G This Manual Must Accompany the Equipment AT ALL TimesTable of Contents ST4125G/ST6125G Submersible PumpPage Safety Information Safety MessagesSymbol General Safety fire extinguisherfirst aid kit Pump Safety Electrical Safety Never disconnect any emergency or Power Cord/Cable Safety Grounding SafetyControl Box Safety Lifting SafetyST4125G/ST6125G Submersible Pump Specifications SpecificationsModel ST4125G/ST6125G Submersible Pump Dimensions ST4125G/ST6125G Pump DimensionsST4125G/ST6125G General Information ST4125G/ST6125G Components Submersible Pump ComponentsFloat Switches Mechanical Float SwitchDesign Features How It WorksFloat Switches Mounting The Float SwitchesCB12/CB14 Control Boxes Control Box SpecificationsControl Box Used With Heater Thermal FloatControl BOX Installation Control Box InstallationPhase Power Installation Input Power Cord RequirementsConnecting SW-1WOPA Float Switches to Control Box Dual Float switch ConnectionsFloat Terminal Wire 230/460 VAC Voltage Selection 230/460 VAC Voltage SelectionCB12/CB14 Control BOX Power Connections Phase Power Installation Output To Pump230/460 VAC Input Power Connections 230/460 VAC Output Power ConnectionsCB12/CB14 Control BOX Wiring Layout See TablePump Placement OperationControl Box Operation Auto Mode Reset ButtonShut-Down Maintenance LubricationImpeller Removal Long Term StorageWater Tank Storage Electrical Insulation Testing Why perform electrical insulation testing?Troubleshooting Pump TroubleshootingCB12/CB14 Control BOX Wiring Diagram ConnectionsPage HERE’S HOW to GET Help

ST6125G, ST4125G specifications

The Multiquip ST4125G and ST6125G are versatile and robust generators that cater to a variety of demanding applications in the construction, rental, and industrial sectors. These portable generators are designed to deliver reliable power with user-friendly features that make them ideal for both professional and recreational use.

One of the standout features of the ST4125G and ST6125G models is their impressive power output. The ST4125G is capable of providing up to 4,000 watts of continuous power, while the ST6125G offers a higher capacity of 6,000 watts. This flexibility allows users to choose the model that best suits their needs, whether for powering tools on a job site or serving as backup power during an outage.

Both models are equipped with a rugged 4-stroke gasoline engine that ensures efficient performance and longevity. The engines are designed with thermal protection to prevent overheating, allowing for extended run times without interruption. Additionally, Multiquip has engineered these generators to have low noise levels while operating, making them suitable for use in residential areas and noise-sensitive environments.

The ST4125G and ST6125G come with a variety of outlets to accommodate different power needs, including 120V and 240V outlets. This versatility makes them ideal for powering everything from small hand tools to larger machinery. Furthermore, the generators feature a dual circuit breaker system for added safety, ensuring a reliable and secure power source.

Portability is another major advantage of the Multiquip ST4125G and ST6125G. Both models are designed with a steel frame and feature large wheels and a folding handle, making transport to and from job sites effortless. The compact design also allows for easy storage when not in use.

In terms of maintenance, Multiquip has incorporated user-friendly features that simplify routine checks and servicing. The generators feature easy access to critical components, allowing users to perform maintenance tasks efficiently.

With their combination of power, portability, and user-friendly features, the Multiquip ST4125G and ST6125G generators stand out in the competitive landscape of portable power solutions. Whether for construction projects, outdoor events, or emergency backup, these generators are reliable choices that meet the demands of various users.