Square D Pressure Switch Manual: A Comprehensive Guide (Updated 01/09/2026)
This manual details Square D pressure switches‚ rebranded to Telemecanique Sensors since July 2023‚ offering guidance on wiring‚ operation‚ troubleshooting‚ and maintenance for optimal performance.

Square D pressure switches‚ now operating under the Telemecanique Sensors brand since July 2023‚ represent a long-standing industry standard for reliable fluid level and pressure control. These switches are meticulously designed for the control of electrically driven water pumps and air compressors‚ ensuring consistent and efficient operation across diverse applications.
Originally known as Square D‚ these devices – particularly the Class 9013 series – have earned a reputation for durability and performance. They are ideal for jet‚ submersible‚ and reciprocating systems‚ monitoring and controlling pumps to start and stop at pre-set pressure points.
This comprehensive guide provides essential information for installation‚ operation‚ and troubleshooting‚ ensuring users can maximize the lifespan and effectiveness of their Square D/Telemecanique pressure switches. Access to resources and support is readily available online.
What is a Square D Pressure Switch?
A Square D pressure switch‚ now a Telemecanique Sensors product‚ is an electromechanical device designed to monitor and regulate fluid pressure within a system. These Pumptrol Pressure Switches are compact and robust‚ functioning as critical components in controlling pumps and compressors. They automatically initiate or terminate electrical circuits based on pre-defined pressure thresholds.
Essentially‚ the switch acts as a sensor‚ detecting pressure changes and triggering corresponding actions. This control is vital for protecting equipment‚ maintaining system efficiency‚ and ensuring safe operation. The Class 9013 series‚ in particular‚ offers a range of options for various applications‚ covering both standard and higher electrical ratings.
These switches are widely used in water systems‚ pneumatic controls‚ and other industrial processes requiring precise pressure management.
Applications of Square D Pressure Switches
Square D (Telemecanique Sensors) pressure switches find extensive use in diverse applications demanding reliable pressure control. Primarily‚ they are designed for controlling electrically driven water pumps – jet‚ submersible‚ and reciprocating systems benefit from their precise operation. Beyond water‚ these switches effectively manage air compressors‚ initiating and stopping them based on pressure settings.
Further applications include hydraulic systems‚ pneumatic machinery‚ and various industrial processes where maintaining specific pressure levels is crucial. They are commonly found in irrigation systems‚ boosting pumps‚ and fluid transfer applications. The Class 9013 series’ versatility allows for adaptation to numerous environments.
Their durability and accuracy make them ideal for both commercial and residential settings.
Square D Pumptrol Pressure Switches: Overview
Square D Pumptrol pressure switches are specifically designed to monitor and control electrically driven water pumps‚ establishing them as a cornerstone in fluid management systems. These robust switches are ideal for jet‚ submersible‚ and reciprocating pump applications‚ ensuring reliable operation and longevity. They function by starting and stopping the pump when pre-set pressure thresholds are reached‚ protecting the system from damage.
Pumptrol switches are known for their compact design and durable construction‚ making them suitable for diverse environments. They offer a cost-effective and dependable solution for maintaining consistent water pressure. The switches are an industry standard due to their quality‚ service‚ and reliability.

Understanding the 9013 Series
The Square D Class 9013 series offers commercial pressure switches for water pump control‚ available in Type F and G variations with specific electrical ratings.
Square D Class 9013: Key Features
Square D’s Class 9013 pressure switches are renowned for their robust design and reliable performance in water pump applications. These switches are specifically designed to monitor and control electrically driven water pumps‚ making them suitable for jet‚ submersible‚ and reciprocating systems. A key feature is their ability to start and stop pumps at pre-set pressure points‚ ensuring consistent operation and preventing damage.
The 9013 series boasts a compact build‚ facilitating easy installation in various environments. They are built to withstand demanding conditions‚ contributing to their longevity as an industry standard. Furthermore‚ the switches offer a range of adjustable settings‚ allowing for customization to meet specific system requirements. Quality‚ service‚ and reliability are hallmarks of this pressure switch.
Types within the 9013 Series (F‚ G)
The Square D 9013 series encompasses two primary types: F and G‚ each tailored to specific application demands. Type F switches are generally suited for standard electrical ratings‚ providing reliable control for common water pump systems. However‚ Type G devices cover higher electrical ratings‚ enabling direct control of motors in more demanding pump and compressor applications.
This increased capacity makes Type G ideal for larger systems or environments requiring greater power handling capabilities. Both types maintain the core features of the 9013 series – durability‚ adjustability‚ and precise pressure control. Choosing between F and G depends on the motor’s electrical requirements and the overall system’s power needs‚ ensuring optimal and safe operation.
Typical Applications for 9013 Switches
Square D 9013 pressure switches are predominantly designed for monitoring and controlling electrically driven water pumps‚ making them indispensable in various settings. These switches excel in jet‚ submersible‚ and reciprocating systems‚ reliably starting and stopping pumps at pre-set pressure points.
Beyond water pumps‚ the Class 9013 also finds application in air compressor control‚ ensuring efficient operation and preventing damage from over-pressurization. Common environments include residential water systems‚ irrigation‚ commercial buildings‚ and light industrial facilities. Their robust construction and adjustable settings make them suitable for diverse fluid handling needs‚ offering dependable performance across a wide range of applications.

Wiring and Installation
Proper wiring is crucial for safe operation. Connect power to the outside terminals of the 9013 switch‚ ensuring correct grounding for reliable performance and safety.
Wiring Diagram for Square D 9013 Pressure Switch
Understanding the wiring configuration of the Square D 9013 pressure switch is paramount for correct installation and safe operation. When facing the switch‚ the four terminals are arranged linearly. The two outer terminals are designated for power connection – typically Line (Hot) and Neutral. These provide the electrical supply to operate the switch mechanism.
The two inner terminals are utilized for the pump or load connection. One terminal serves as the pump’s power input‚ while the other connects to the pump’s neutral wire‚ completing the circuit. Always ensure the power source is disconnected before commencing any wiring procedures. A qualified electrician should perform or supervise the installation to guarantee adherence to local electrical codes and safety standards. Incorrect wiring can lead to equipment damage‚ electrical hazards‚ or operational failure.
Refer to the official Square D/Telemecanique documentation for detailed wiring schematics specific to your application and model variation.
Identifying Terminals (Left to Right)
Accurate terminal identification is crucial for proper Square D 9013 pressure switch wiring. Looking directly at the switch face‚ the four terminals are sequentially numbered from left to right; The first terminal on the extreme left is typically designated for the Line (Hot) power input. Adjacent to it‚ the second terminal serves as the Neutral power connection point.
Moving towards the right‚ the third terminal is dedicated to the pump’s power output‚ delivering electricity when the switch is activated. Finally‚ the fourth terminal on the far right connects to the pump’s neutral wire‚ completing the electrical circuit. Double-check these identifications before making any connections to avoid miswiring and potential damage.
Consult the product’s documentation for confirmation‚ as variations may exist.
Power Connection Points
Establishing secure power connections is paramount for safe and reliable operation of your Square D 9013 pressure switch. As previously identified‚ the outermost terminals facilitate power input. The terminal furthest to the left is designated for the Line (Hot) wire‚ carrying the incoming electrical current. The terminal immediately to its right is reserved for the Neutral wire‚ completing the power circuit.
Ensure all connections are tightened securely to prevent loose wiring and potential arcing. Use appropriately sized wire connectors and follow all local electrical codes. Incorrect power connections can lead to switch malfunction‚ equipment damage‚ or even electrical hazards.
Always disconnect power before working with the switch.
Grounding Considerations
Proper grounding is a critical safety measure when installing and operating a Square D 9013 pressure switch. While the switch itself may not have a dedicated grounding terminal‚ the metal conduit or enclosure housing the switch must be effectively grounded. This provides a safe path for fault current in the event of an electrical short‚ minimizing the risk of electric shock and equipment damage.
Connect a grounding wire from the metal conduit or enclosure to a known‚ reliable grounding point in your electrical system. Verify the grounding connection’s integrity with a continuity test.
Never operate the switch without a proper ground‚ as this compromises safety.

Operation and Adjustment
Square D pressure switches automatically start and stop pumps based on pre-set pressure levels‚ adjustable for cut-in‚ cut-out‚ and differential pressure settings.
Setting Cut-In and Cut-Out Pressures
Adjusting the cut-in and cut-out pressures is crucial for proper pump control. The cut-in pressure determines when the pump initiates operation‚ while the cut-out pressure dictates when it shuts off. These settings are typically adjusted using screws or dials located on the pressure switch housing.
Carefully rotate the adjustment screws‚ observing the pressure gauge connected to your system. Increase the cut-in pressure to delay pump start-up‚ and increase the cut-out pressure to extend pump run-time. Ensure the differential pressure (the difference between cut-out and cut-in) is appropriate for your application‚ preventing rapid cycling or insufficient pressure. Always consult the specific model’s documentation for detailed instructions and recommended pressure ranges.
Adjusting Differential Pressure
Differential pressure controls the range between the pump’s start (cut-in) and stop (cut-out) points. Adjusting this setting prevents frequent pump cycling‚ which can reduce the switch’s lifespan and cause system instability. Typically‚ a smaller differential means a narrower pressure range‚ while a larger differential provides a wider range.
Locate the differential adjustment screw on the Square D pressure switch. Rotating this screw alters the pressure difference between cut-in and cut-out. A wider differential is suitable for applications needing consistent pressure‚ while a narrower one is better for systems requiring precise control. Always verify the adjusted settings with a pressure gauge and refer to the specific model’s manual for recommended ranges to avoid damage or inefficient operation.
Understanding Pressure Switch Operation
Square D Pumptrol pressure switches monitor systems and initiate pump start/stop cycles based on pre-set pressure levels. When system pressure drops below the cut-in pressure‚ the switch closes the electrical circuit‚ activating the pump. Conversely‚ when pressure reaches the cut-out point‚ the switch opens the circuit‚ halting the pump.
These switches are designed for electrically driven water pumps‚ jet‚ submersible‚ and reciprocating systems. Proper operation relies on accurate pressure sensing and reliable contact switching. Understanding the interplay between cut-in‚ cut-out‚ and differential pressure is crucial for optimal system performance and longevity. Regular inspection ensures consistent and safe operation‚ preventing potential issues like rapid cycling or pump failure.

Troubleshooting Common Issues
Addressing problems like a switch failing to turn on‚ rapid cycling‚ or low pressure cut-out requires systematic diagnosis‚ ensuring proper pump and system functionality.
Pressure Switch Not Turning On

If the Square D pressure switch isn’t activating‚ several factors could be at play. First‚ verify the power supply to the switch is functioning correctly using a multimeter; check both the incoming voltage and the connections at the terminals. Ensure the wiring is secure and corresponds to the correct diagram for the 9013 series.
Next‚ inspect the pressure source itself – is there sufficient pressure reaching the switch? A blocked line or malfunctioning pump can prevent activation. Confirm the cut-in pressure setting isn’t set too high for the current system pressure. Finally‚ examine the switch’s internal components for any signs of damage or corrosion‚ potentially requiring replacement. Remember safety precautions when working with electrical components!
Pressure Switch Cycling Rapidly
Rapid cycling of a Square D pressure switch often indicates an issue with pressure fluctuations within the system. This could stem from a small leak in the plumbing‚ causing the pressure to drop below the cut-in point repeatedly. Inspect all connections‚ pipes‚ and fittings for any signs of leakage.
Another potential cause is an improperly adjusted differential pressure – a too-small differential will result in frequent on/off cycles. Verify the pump’s capacity is appropriately sized for the system’s demands; an undersized pump struggles to maintain pressure. Finally‚ check for air trapped within the system‚ as air pockets can cause erratic pressure readings and rapid cycling.
Low Pressure Cut-Out Issues
A Square D pressure switch failing to activate or exhibiting low pressure cut-out problems often points to insufficient water supply or a failing pump. First‚ confirm the water source has adequate pressure and volume. Inspect the pump itself for signs of wear‚ cavitation‚ or impeller damage‚ as these can reduce its output.
Check the switch’s adjustment settings; a cut-out pressure set too low will trigger premature shutdown. Also‚ verify there are no obstructions in the inlet line restricting water flow. Air locked within the system can also mimic low pressure; bleeding the line may resolve the issue. Finally‚ a faulty pressure switch itself should be considered.

Maintenance and Safety
Regular inspection‚ cleaning‚ and lubrication are crucial for reliable operation. Always disconnect power before servicing and follow all electrical safety precautions diligently.
Regular Inspection Procedures
Consistent inspection is vital for ensuring the longevity and safe operation of your Square D pressure switch. Begin by visually examining the switch housing for any signs of physical damage‚ such as cracks or corrosion. Carefully check the wiring connections‚ ensuring they remain tight and free from loose strands.
Inspect the diaphragm and internal components for any evidence of wear‚ deterioration‚ or blockage. Pay close attention to the pressure adjustment settings‚ verifying they haven’t drifted from their intended values. A functional test‚ observing the switch’s response to pressure changes‚ should be performed periodically.
Document all inspection findings and any corrective actions taken. Following a regular inspection schedule – perhaps quarterly or semi-annually – will help identify potential issues before they escalate into costly repairs or hazardous situations.
Cleaning and Lubrication
Maintaining a clean environment around your Square D pressure switch is crucial for reliable performance. Periodically‚ use a soft‚ dry cloth to wipe down the exterior of the switch‚ removing any accumulated dust or debris. Avoid using harsh chemicals or abrasive cleaners‚ as these can damage the housing or internal components.
Internal lubrication is generally not required for most Square D pressure switch models. However‚ if disassembly is necessary for repair‚ consult the official Square D documentation for recommended lubricants. Applying the wrong type of lubricant can impair switch functionality.
Ensure all cleaning and maintenance activities are performed with the power supply disconnected to prevent electrical shock. A clean switch operates more efficiently and extends its service life.
Safety Precautions When Working with Pressure Switches
Working with pressure switches involves potential electrical and mechanical hazards; prioritize safety at all times. Always disconnect the power supply before attempting any installation‚ maintenance‚ or troubleshooting procedures. Verify the power is off using a reliable testing device.
Relieve all pressure within the system before disconnecting any lines or fittings from the pressure switch. Wear appropriate personal protective equipment (PPE)‚ including safety glasses and gloves. Be mindful of potential fluid leaks or bursts.
Never attempt to repair a pressure switch if you are not qualified to do so. Improper repairs can create dangerous conditions. Consult a qualified electrician or technician for complex issues.

Square D to Telemecanique Sensors Transition
Square D pressure switches transitioned to the Telemecanique Sensors brand in July 2023‚ maintaining quality and reliability while updating branding and support resources.
Rebranding Details (July 2023)
In July 2023‚ Square D pressure switches underwent a rebranding initiative‚ becoming part of the Telemecanique Sensors portfolio. This change reflects a broader strategy within Schneider Electric‚ the parent company‚ to consolidate its sensor offerings under a unified brand. Despite the name change‚ the core functionality‚ quality‚ and reliability of these pressure switches remain consistent.
Customers can expect the same dependable performance they’ve come to associate with Square D‚ now backed by Telemecanique Sensors’ expertise. This transition impacts product labeling‚ documentation‚ and support channels. Existing Square D part numbers may have corresponding Telemecanique Sensors equivalents‚ and it’s crucial to reference updated resources for accurate information. The rebranding aims to streamline product identification and enhance customer support accessibility.
Impact on Manuals and Support
The rebranding from Square D to Telemecanique Sensors in July 2023 necessitates a review of existing manuals and support resources. While the underlying technology remains unchanged‚ documentation now reflects the Telemecanique Sensors branding. Older Square D manuals are still valuable for understanding operation‚ but users should be aware of the updated product names and logos.
Technical support channels have also transitioned. Customers seeking assistance should now direct inquiries to Telemecanique Sensors support teams. Online resources‚ including FAQs and troubleshooting guides‚ are being updated to reflect the rebranding. Finding equivalent Telemecanique Sensors products for previously Square D parts is crucial for continued support and parts availability.
Finding Telemecanique Sensors Equivalents
Locating Telemecanique Sensors equivalents for your existing Square D pressure switches is straightforward. The core functionality and specifications remain consistent despite the rebranding. Utilize cross-reference charts available on the Telemecanique Sensors website or through their technical support channels. These charts map Square D part numbers directly to their corresponding Telemecanique Sensors replacements.
When searching online‚ use the original Square D specifications (voltage‚ pressure range‚ connection type) to filter Telemecanique Sensors products. Plumbing associates or Pro Desk staff at hardware stores can also assist in identifying the correct equivalent. Remember that while the branding has changed‚ the quality and reliability you expect from Square D are maintained by Telemecanique Sensors.

Resources and Documentation
Access official Square D/Telemecanique documentation online and through technical support. Online resources provide troubleshooting assistance and detailed product specifications for your switch.
Official Square D/Telemecanique Documentation
Comprehensive documentation for Square D and now Telemecanique Sensors pressure switches is readily available. A key resource is the Class 9013 data sheet‚ originally sourced from stevenengineering.com (as of 02/24/2011)‚ detailing water pump pressure control switch specifications.
You can find detailed manuals and product information on the Telemecanique Sensors website‚ reflecting the July 2023 rebranding. These resources cover installation‚ wiring diagrams (identifying terminals from left to right)‚ operation‚ and troubleshooting procedures.
Square D Company’s address (8001 Highway 64 East‚ Knightdale‚ NC 27545-9023) and phone number ((919) 266-3671) are often included in older documentation. Always prioritize the most current Telemecanique Sensors materials for accurate information‚ ensuring compatibility and safe operation of your pressure switch.
Technical Support Contact Information
For direct assistance with Square D/Telemecanique Sensors pressure switches‚ several support channels are available. Historically‚ Square D Company could be reached at (919) 266-3671‚ located at 8001 Highway 64 East‚ Knightdale‚ NC 27545-9023. However‚ due to the rebranding in July 2023‚ contacting Telemecanique Sensors is now recommended.
Visit the official Telemecanique Sensors website for updated contact details‚ including phone numbers‚ email addresses‚ and online chat support options.
Many plumbing supply stores and their Pro Desks can also provide assistance‚ helping you locate specific models and offering basic troubleshooting advice. Online resources and forums dedicated to electrical and plumbing systems can also be valuable for peer-to-peer support and finding solutions to common issues.
Online Resources for Troubleshooting
Numerous online platforms offer valuable troubleshooting assistance for Square D (now Telemecanique Sensors) pressure switches. A starting point is searching for the specific 9013 series model number‚ as detailed documentation‚ like the PDF from stevenengineering.com (dated 02/24/2011)‚ may be available.
Web searches utilizing keywords like “Square D 9013 troubleshooting” or “Telemecanique pressure switch repair” yield forum discussions and video tutorials addressing common problems like switches not turning on or rapid cycling.
Electrical and plumbing focused websites often host detailed guides. Remember to verify information’s relevance‚ considering the July 2023 rebranding. Always prioritize safety and consult a qualified electrician when dealing with electrical components.