After logging in, you can proceed to the next step by entering the details of the pump you request, such as the type of fluid, flow rate, discharge head, static head, and rpm.
After entering the necessary information, click the "select pump" button and pump series are listed based on efficiency, either individually or in multiples.
By accessing the data sheet of the requested pump, you can manually select the pump material, motor, mechanical seal, flange pressure classes, and their locations. If you want the standard material combination and information, there's no need to select manually.
After completing the steps, you can obtain a printout of the data sheet by clicking the "print" button.
What is Flow Rate?
Flow rate indicates how much liquid a pump can transfer in a unit of time. It's usually expressed in liters/minute or m³/hour. The flow rate is chosen based on the needs of a system. For example, a pump supplying water for a large building is expected to have a higher flow rate than one needed for a small house.
What is Pump Head (Hm)?
Pump head represents how high a pump can push the liquid. This value is typically expressed in meters and is an important criterion for evaluating the performance of a pump. The Hm value can vary depending on the design of the pump, the power of the motor, and the materials used.
What is a Pressure Switch?
A pressure switch is a device that produces a signal or initiates an action when the pressure in a system reaches a predetermined value or falls below it. For example, in a hydrophore system, when the water pressure drops below a certain value, the pressure switch activates the pump to restore the pressure to normal.
What is a Pear-Type Check Valve?
A pear-type check valve has a pear-shaped body and allows the liquid to flow in only one direction. This prevents the liquid from flowing backward, ensuring the proper operation of the system. Pear-type check valves are especially preferred in horizontal pipe lines.
What is an Open Expansion Tank Heating System?
An open expansion tank heating system is based on the principle that as a liquid heats up, it expands, and as it cools down, it contracts. The system needs a tank to accommodate the extra liquid when the liquid expands, preventing excessive pressure buildup. This tank is called an 'expansion tank'. An open expansion tank is a tank that is open to the atmosphere and ensures that the pressure in the system remains balanced with atmospheric pressure.
What is a Bottom Valve (Foot Valve)?
A bottom valve, often known as a foot valve, is a check valve installed at the bottom of a pump suction line, inside the water source. It allows water to flow into the suction pipe but prevents it from flowing back out, ensuring that the suction line remains filled, facilitating consistent and efficient pump operation.
What is NFPA20?
NFPA20 is the standard for the installation of stationary pumps for fire protection, set by the National Fire Protection Association (NFPA). This standard defines the selection and installation criteria for fire pump systems to ensure adequate water supply in the event of a fire.
What is UL?
UL stands for Underwriters Laboratories, an independent organization that tests and certifies products for safety. Products with a UL certification have met rigorous safety standards, ensuring their reliability and safety in various applications.
What is FM?
FM refers to Factory Mutual, an insurance company known for its rigorous testing and certification of fire protection equipment. FM-approved equipment adheres to high standards of performance and reliability, assuring its efficiency in fire prevention and control.
What are Frequency-Controlled Pump Operating Modes?
Frequency-controlled pump operating modes involve using variable frequency drives (VFDs) to control the speed of the pump's motor. By adjusting the motor's speed, the pump can adapt to varying system demands, providing energy efficiency and optimal performance. Common modes include constant pressure, constant flow, and proportional pressure.
What is a Booster Pump?
A booster is a pump system used to maintain water pressure at a specific level. It is commonly used in apartment buildings, hotels, and industrial facilities. The system consists of a water tank, pump, pressure tank, and control mechanism.
What are the Criteria for Booster Selection?
Criteria to consider when selecting a booster include the size of the area it will be used in, water needs, energy efficiency, ease of maintenance, and cost.
What is the IPXY Protection Class?
IPXY is a code system that indicates how well electrical equipment is protected against external factors. The 'X' and 'Y' numbers respectively indicate the degree of protection against dust and water.
Advantages of Choosing Wet-Rotor or Dry-Rotor Pumps in Heating Systems
Wet-rotor pumps generally operate more quietly and typically require no maintenance. Dry-rotor pumps, on the other hand, are usually higher capacity and suitable for a wider range of applications.
What is a Jockey Pump?
A jockey pump is a small pump used in fire suppression systems. It is used to maintain pressure in the system before the main fire pump is activated.
What is Cavitation?
Cavitation is the process in which a liquid evaporates under pressure, and the resulting vapor bubbles collapse within the liquid. Cavitation in centrifugal pumps typically occurs in low-pressure areas caused by the high-speed rotation of the rotor.
Centrifugal pumps consist of a rotating rotor that draws in the liquid and throws it outward with centrifugal force. However, during this high-speed rotation, low-pressure zones can form within the liquid. If this pressure drops below the vaporization pressure of the liquid, the liquid rapidly evaporates, forming vapor bubbles. These bubbles then move towards the high-pressure zones where the rotor is turning. However, until the pressure rises again, the bubbles collapse, creating high-speed impacts that can damage the inner surface of the device.
What Causes Corrosion?
Corrosion is a process where metals deteriorate gradually by reacting with oxygen, moisture, and other environmental factors. This can adversely affect the structural integrity and function of metals.
How Do Protection & Control Panels Work?
Protection and control panels are designed to protect, control, and manage electrical circuits. They are used to protect circuits against potential hazards like overcurrent and short circuits.
How Are Protection & Control Panels Selected?
When selecting protection and control panels, factors such as the load capacity to be applied, required protection features, conditions of the location where the panel will be mounted, and energy efficiency should be considered.
What Are the Uses of Protection & Control Panels?
Protection and control panels manage electrical circuits and protect them against hazards such as overvoltage, overcurrent, and short circuits.
What Are Protection & Control Panels?
These panels are units that safeguard electrical circuits and equipment, ensuring their safe and efficient operation.
Where Are Protection & Control Panels Used?
Protection and control panels are commonly used in industrial facilities, buildings, power plants, and electrical distribution networks.
What is a Mechanical Seal?
A mechanical seal is a device used by pumps and other rotating equipment to prevent liquid or gas leaks from their moving parts. It forms a rotating connection between two surfaces to prevent these leaks.
Volume Calculation of Diaphragm Tank (Vmt)
The volume calculation of the diaphragm tank is done to determine the amount of water required for the effective use of the expansion tank in a hydrophore system. This calculation can vary depending on the operating parameters of the system.
Why Should Frequency-Controlled Booster Systems Be Preferred?
Frequency-controlled booster systems offer energy savings, extend the life of the system, and have the ability to respond quickly to dynamic demands. These advantages make them a preferred choice.
What is the NPSH Value (Net Positive Suction Head)?
NPSH es un valor que indica cuán baja puede ser la presión a la que una bomba puede operar sin causar cavitación. Este valor especifica la presión mínima de líquido requerida para que la bomba opere de manera eficiente y segura.
What is an Automatic Booster Device Hydromat?
Hydromat is a control device that automatically activates the booster pump when the water pressure drops below a certain value and stops it when the pressure rises above a certain value.
What are Panel Accessories?
Panel accessories are used to enhance the functionality and safety of electrical panels. They include components like switches, fuses, relays, indicators, and connection terminals.
What is a Pump Characteristic Curve?
The pump characteristic curve is a graph that shows how a pump performs under variable operating conditions. It is typically plotted as flow rate against head (or pressure).
What are the Basic Parameters Required for Pump Selection?
The basic parameters required for pump selection include maximum and minimum flow rate, head, fluid properties (viscosity, density, temperature), operating pressure, and type of pump.
What is Pump Efficiency?
Pump efficiency is a ratio indicating the effectiveness of a pump in energy conversion. It is typically expressed as a percentage of the motor energy amount that the pump converts to hydraulic energy.
How is Energy Saved in Pumps?
To achieve energy savings in pumps, methods such as efficient pump selection, operating within the correct working range, using frequency-controlled drives, and regular maintenance & checks are employed.
Dry Running in Pumps
Dry running in pumps occurs when the flow of liquid into the pump is obstructed. This can lead to the pump overheating and potentially getting damaged.
Use of Pumps Under Negative Suction Conditions
Using pumps under negative suction conditions means the liquid enters the pump suction part under a pressure lower than atmospheric pressure. This can increase the risk of cavitation.
Circulation Pump Assembly Diagram
The circulation pump assembly diagram is a technical drawing that shows how the circulation pump will be integrated into a heating or cooling system.
What is a System Curve?
The system curve is a graph that shows the total energy loss of a fluid conveyance system at a specific flow rate. It's a critical factor in pump selection and system design.
What is Water Hammer (Surge)?
Water hammer is an event of sudden pressure increase caused by sudden stops or changes in direction of liquid flow. This event can lead to damage in pipes, valves, or other equipment.
What is a Swing Check Valve?
A swing check valve is a type of valve that allows fluid to flow in only one direction. It is used to prevent backflow.
What are the Operating Criteria for Fire Pumps under Negative Suction Conditions according to NFPA20?
The NFPA20 standard sets criteria regarding the design and installation of fire pumps. Operating under negative suction conditions should be done according to specific criteria to minimize the risk of cavitation in pumps.
What is the Advantage of Using Spacer Coupling in End-Suction Fire Pumps?
Using a spacer coupling facilitates the maintenance and repair of fire pumps. It provides the possibility to change components or perform maintenance without disassembling the pump or motor.
What is a Vortex Impeller?
A vortex impeller is a type of pump impeller that utilizes the rotary motion of the fluid and converts this motion into energy. It is used to convey solids and has a lower risk of clogging.
What is a Fire Pump?
A fire pump is a piece of equipment used in fire suppression systems to ensure water reaches the fire area at the required pressure and flow rate.
What is the Legal Responsibility of Architects and Engineers in Fire Pump Design, Implementation, and Inspection?
Architects and engineers have an obligation to ensure compliance with national and international standards, regulations, and laws in the design, implementation, and inspection of fire pumps.
What is a Soft Packing Seal (or Soft Gland Packing)?
A soft packing seal, often made of soft materials, is a component used to reduce friction between two surfaces and provide a seal.
What is an End-Suction Pump?
An end-suction pump is a type of pump where the liquid is drawn in from the center of the pump and discharged from the side. It's typically used in simple design and low to medium flow rate applications.
What is a Multistage Pump?
A multistage pump is a type of pump that has multiple impellers and diffusers. Each stage increases the pressure, boosting the energy of the liquid.
What is a Split-Case Pump?
A split-case pump is a type of pump with a casing that can be split horizontally for maintenance and repair purposes. This design allows easy access to the pump impeller.
What is a Vertical Turbine Pump?
A vertical turbine pump is a pump that has a series of impellers mounted on a vertical shaft. It is used to draw water from deep wells and for high lift heights.
What is a Hot Oil Pump?
A hot oil pump is a type of pump designed to handle oils at high temperatures (usually above 100°C). These pumps are used in heat transfer applications.
What is an In-Line Pump?
An in-line pump is a type of pump where the inlet and outlet ports are aligned, typically mounted vertically. It is frequently used in circulation applications.
What is a Cartridge-Type Seal?
A cartridge-type seal comes as a pre-assembled and aligned component, simplifying the installation process. Compared to traditional seals, the use of a cartridge-type seal minimizes incorrect installation and provides more consistent and reliable sealing.
Pump Doesn't Suction
Rotation direction is reversed
Suction line is not fully filled with water
There is air in the suction pipe
Suction pipe is not filled enough with water
NPSH (current) is too low
Rotation speed is low
System pressure is higher than the pump's label value
Foot valve is clogged
Suction depth is too much
No water is getting to the mechanical seal or the seal is drawing in air
Impeller is installed backward
Suction valve is fully closed
Impeller is deformed
Flange gaskets installed without cutting out the centers
Impeller is fully clogged
Pump Doesn't Give Label Flow Rate
There is air in the suction pipe
Suction pipe is not filled enough with water
NPSH (current) is too low
Rotation speed is low
System pressure is higher than the pump's label value
Suction pipe is drawing in air
Foot valve is too small
Foot valve is clogged
Liquid's viscosity is higher than design value
Wear rings are worn out Impeller is deformed
Suction depth is too much
Part of the impeller is clogged
No water is getting to the mechanical seal or the seal is drawing in air
Impeller is installed backward
Suction valve is partially closed
Wrong pump selection
Pump body gaskets are worn out
Pump Doesn't Give Label Pressure Value
Rotation direction is reversed
Rotation speed is low
Suction pipe is drawing in air
Liquid's viscosity is higher than design value
Wear rings are worn out Impeller is deformed
Excessive steam, gas, or air in the liquid
Wrong pump selection
Impeller diameter is small
Pump body gaskets are worn out
Pump Loses Suction After Initial Start
Suction line is not fully filled with water
There is air in the suction pipe
Suction pipe is not filled enough with water
NPSH (current) is too low
Suction pipe is drawing in air
Suction depth is too much
Excessive steam, gas, or air in the liquid
Water ring is not properly positioned
No water is getting to the mechanical seal or the seal is drawing in air
Pump body gaskets are worn out
Motor is Overloaded
Liquid's viscosity is higher than design value
Wear rings are worn out
Impeller is deformed
Liquid density is higher than design value
Coupling is misaligned
Bearings are deformed
Shaft misalignment
Mechanical seal is tightly mounted
Foreign object inside the pump
Impeller is installed backward
Mechanical malfunction Impeller is rubbing against the pump body
Noise or Vibration Exists
There is air in the suction pipe
Suction pipe is not filled enough with water
NPSH (current) is too low
Suction pipe is drawing in air
Liquid's viscosity is higher than design value
Excessive steam, gas, or air in the liquid
Bearings are deformed Impeller is not balanced
Part of the impeller is clogged
Shaft misalignment
Incorrect position of the pump's discharge valve
Faulty base foundation
Foreign object inside the pump
Impeller is installed backward
Mechanical malfunction
Coupling is deformed
Balancing disk is not working
Seal Bearing Overheats
Seal is tightly mounted
No water is getting to the mechanical seal or the seal is drawing in air
Wrong seal selection
Cooling is inadequate
Foreign object inside the pump
Bearings Overheat and Deform
Bearings are deformed
Part of the impeller is clogged
Shaft misalignment
Incorrect position of the pump's discharge valve
Cooling is inadequate
Oil level is too low or too high
Wrong oil selection
Water or dirt in the bearings
Lubrication system is not working
Bearings are mounted too tightly
Excessive axial load Inadequate lubrication
Incorrect bearing installation
Excessive bearing cooling
System imposes excessive load on the pump
Foreign object inside the pump
Impeller balancing holes are clogged
Balancing disk is not working
Irregular Flow and Turbulence Exists
There is air in the suction pipe
Suction pipe is not filled enough with water
NPSH (current) is too low
Suction pipe is drawing in air
Excessive steam, gas, or air in the liquid
Product Commissioning
Product commissioning is carried out by our own service in Turkey. In the countries where we have a dealer, the commissioning is carried out by the dealer vehicle, and in the countries where we do not have a dealer, our service team carries out the commissioning.
How Can I Use My Product?
You can install our products by reading and following the installation section in the user manual, but malfunctions caused by installation errors are not covered by the warranty. For this reason, it is recommended to be done by our authorized service or authorized dealer.
When Does My Guarantee Start?
The warranty period starts upon delivery and lasts 24 months domestically and 12 months internationally.
Do I Need to Send the Warranty Certificate?
The product warranty certificate is automatically sent to our dealers by Sempa.
How Can I Apply for Service/Failure?
We recommend you to send your service application via e-mail to servis@sempapompa.com. The information we want you to prioritize here is as follows:
Product model, serial number, brief description of the malfunction and video or photo information. You can also contact us via WhatsApp or by phone +90 444 64 13.
How Can I Reach the Nearest Authorized Service Center?
You can reach the nearest authorized service by contacting our dealer in your country or by sending an e-mail to servis@sempapompa.com.
