Grundfos Hydro Mpc Evaluation

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  • 1/95 Questions

    A Hydro MPC can be connected to a building management system

    • True
    • False
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Engineering Quizzes & Trivia
About This Quiz

This quiz evaluates knowledge on Grundfos Hydro MPC systems, focusing on the CU351 controller, warranty periods, system materials, and connectivity. It assesses understanding of system specifications and integration, crucial for engineering and maintenance professionals.

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  • 2. 

    When replacing an MLE on a Hydro MPC E system, what parameters must be set for proper operation?

    • Pump Number

    • Digial Input

    • Signal Relay

    • All of these

    Correct Answer
    A. All of these
    Explanation
    When replacing an MLE on a Hydro MPC E system, all of the mentioned parameters (Pump Number, Digital Input, and Signal Relay) must be set for proper operation. These parameters are crucial for the system to function correctly and ensure that the replacement MLE is integrated seamlessly into the system. Each parameter plays a specific role in the operation of the Hydro MPC E system, and neglecting any of them may result in malfunction or inefficiency. Therefore, it is essential to set all of these parameters when replacing an MLE.

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  • 3. 

    What will cause a Hydro MPC to not stop running?

    • Reversed suction & discharge sensors

    • Incorrect diaphragm tank pressure

    • Discharge sensor valve closed

    • All of these

    Correct Answer
    A. All of these
    Explanation
    The Hydro MPC will not stop running if any of the mentioned conditions occur. Reversed suction and discharge sensors can cause the pump to continue running as it may not detect the correct flow direction. Incorrect diaphragm tank pressure can also prevent the pump from stopping as it may not reach the desired pressure level. Additionally, if the discharge sensor valve is closed, it will prevent the pump from shutting off. Therefore, any of these conditions can cause the Hydro MPC to not stop running.

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  • 4. 

    In what markets can a Hydro MPC be applied?

    • Commercial

    • Industrial

    • Municipal

    • All of these

    Correct Answer
    A. All of these
    Explanation
    A Hydro MPC can be applied in commercial, industrial, and municipal markets. This means that it is suitable for use in various sectors, including businesses, factories, and government organizations. Its versatility allows it to meet the diverse needs of different markets, making it a flexible and adaptable solution for water supply and pressure boosting systems.

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  • 5. 

    Which selection best describes the information needed to size / select a Hydro MPC for a high rise building operation?

    • Flow rate, voltage. horsepower

    • Flow rate, building height

    • Flow rate, inlet pressure, static head, friction loss, pressure requirement on roof

    • Flow rate, building height, inlet pressure

    Correct Answer
    A. Flow rate, inlet pressure, static head, friction loss, pressure requirement on roof
    Explanation
    To size/select a Hydro MPC for a high rise building operation, it is important to consider several factors. These include the flow rate of the water, the inlet pressure, the static head (the vertical distance between the pump and the highest point of discharge), the friction loss (pressure loss due to friction in the pipes), and the pressure requirement on the roof of the building. These factors are crucial in determining the appropriate size and specifications of the Hydro MPC system to ensure it can effectively meet the needs of the high rise building operation.

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  • 6. 

    What is the maximum number of pumps available on a standard Hydro MPC?

    • 3

    • 4

    • 6

    • 8

    Correct Answer
    A. 6
    Explanation
    A standard Hydro MPC can have a maximum of 6 pumps.

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  • 7. 

    If someone requests a 50/50/50 system, how many pumps are being requested, and how much redundancy would the system have?

    • 6 Pumps, 3 as back up

    • 3 Pumps, 50% redundancy

    • 3 Pumps, 100% redundancy

    • 5 Pumps, 1 backup

    Correct Answer
    A. 3 Pumps, 50% redundancy
    Explanation
    A 50/50/50 system means that there are a total of 6 pumps in the system. Out of these 6 pumps, 3 are being requested to be operational and the remaining 3 are backups. This configuration provides 50% redundancy, as there are an equal number of backup pumps available in case any of the operational pumps fail.

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  • 8. 

    Into which markets can you sell a Hydro MPC?

    • Commercial

    • Industrial

    • Municipal

    • Market(s) for which the distributor is authorized

    Correct Answer
    A. Market(s) for which the distributor is authorized
    Explanation
    The correct answer is "Market(s) for which the distributor is authorized". This means that you can only sell a Hydro MPC in the markets for which the distributor has been given authorization. This could include commercial, industrial, or municipal markets, but it depends on the specific authorization given to the distributor.

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  • 9. 

    What menu function can be used to program the CU351 controller to accept a pressure sensor signal

    • Operations home screen

    • Settings > Analaog Inputs

    • Status home screen

    • Fault home screen

    Correct Answer
    A. Settings > Analaog Inputs
    Explanation
    The menu function "Settings > Analog Inputs" can be used to program the CU351 controller to accept a pressure sensor signal. This menu allows the user to configure the analog inputs of the controller, including setting up the appropriate parameters for accepting signals from sensors such as pressure sensors.

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  • 10. 

    How do you enter a Hydro MPC PO?

    • On the Extranet

    • Fax / e-mail it to BoosterpaQ order entry

    • Fax it to the main Grundfos order entry fax number

    • Fax / e-mail it to the local DSM

    Correct Answer
    A. Fax / e-mail it to BoosterpaQ order entry
    Explanation
    To enter a Hydro MPC PO, you need to fax or email it to the BoosterpaQ order entry.

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  • 11. 

    What must accompany the PO for a Hydro MPC?

    • BoosterpaQ Order Information Form

    • Nothing

    • Completed summary Quation sheet fro BP Quote Confog Excel program

    • Quote from DSM

    Correct Answer
    A. Completed summary Quation sheet fro BP Quote Confog Excel program
    Explanation
    The completed summary quotation sheet for the BP Quote Config Excel program must accompany the PO for a Hydro MPC. This document provides all the necessary information and details about the order, including the specifications, pricing, and configuration of the BoosterpaQ system. It ensures that the correct product is ordered and that all the required information is provided to process the order accurately.

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  • 12. 

    The design requirement is 200 gpm @ 80 PSIG with a 2-pump system, with 100% reduntancy.  What is the flow & head of the individual pumps without friction loss?

    • 67 gpm @ 80 PSIG

    • 100 gpm @ 80 PSIG

    • 200 gpm @ 80 PSIG

    • None of the above

    Correct Answer
    A. 200 gpm @ 80 PSIG
    Explanation
    The correct answer is 200 gpm @ 80 PSIG because the design requirement states that the system needs to have a flow rate of 200 gpm at 80 PSIG. Since it is a 2-pump system with 100% redundancy, each pump needs to be able to provide the full flow rate of 200 gpm. Therefore, the flow rate of each individual pump without friction loss is 200 gpm. The pressure of 80 PSIG remains the same for both pumps.

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  • 13. 

    Which best describes an R100?

    • Control panel on an MLE motor

    • Infrared programmer that's used to program E-Pumps

    • Software that's loaded into an MLE motor

    • An expansion I&O module used in an MLE motor

    Correct Answer
    A. Infrared programmer that's used to program E-Pumps
    Explanation
    An R100 is an infrared programmer that is specifically used to program E-Pumps.

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  • 14. 

    For what applications can a variable speed Hydro MPC be used?

    • Constant differential pressure

    • Constant temperature

    • Constant pressure

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    A variable speed Hydro MPC can be used for all of the given applications, including constant differential pressure, constant temperature, and constant pressure. This means that the Hydro MPC can adapt and adjust its speed to maintain a consistent pressure, temperature, or pressure level, depending on the specific application requirements. It offers versatility and flexibility in various applications, making it a suitable choice for a wide range of industries and systems.

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  • 15. 

    What separates the CU351 controller from other operator interfaces?

    • Nothing, both operator interfaces can be programmed for multiple purposes.

    • CU351 has more flexible functions than any other operatoe interfaces for multiple purposes.

    • CU351 designed specifically for pumping systems instead of a general purpose operator interfaces

    • CU351 is made by a third party.

    Correct Answer
    A. CU351 designed specifically for pumping systems instead of a general purpose operator interfaces
    Explanation
    The CU351 controller is different from other operator interfaces because it is specifically designed for pumping systems, whereas other interfaces are general purpose and can be programmed for multiple purposes. This means that the CU351 controller has more specialized and flexible functions that are tailored specifically for pumping systems.

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  • 16. 

    How can the alarm log help with a pump problem?

    • Many different alarm occurances are displayed

    • The date & time stamp of each alarm can be used to help determine the cause of the alarm

    • Up to 24 alarm occurances will be stored

    • All of these

    Correct Answer
    A. All of these
    Explanation
    The alarm log can help with a pump problem because it displays many different alarm occurrences. The date and time stamp of each alarm can be used to help determine the cause of the alarm. Additionally, up to 24 alarm occurrences will be stored in the log. Therefore, all of these factors make the alarm log a valuable tool in diagnosing and troubleshooting pump problems.

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  • 17. 

    Panel component part numbers are identified in what document?

    • The panel schematic

    • The panel BOM (bill of material)

    • The panel layout drawing

    • None of these

    Correct Answer
    A. The panel BOM (bill of material)
    Explanation
    The correct answer is the panel BOM (bill of material). A bill of material is a comprehensive list of all the components and parts required to assemble a product. In the context of a panel, the panel BOM would include the part numbers of all the components that make up the panel. This document is essential for identifying and sourcing the correct parts for the panel assembly. The panel schematic and layout drawing may provide additional information about the panel's design and layout, but they would not specifically list the part numbers. Therefore, the panel BOM is the most appropriate document for identifying the part numbers of panel components.

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  • 18. 

    If the Hydro MPC is stopped and the display shows a primary sensor fault, you should check:

    • The GENI bus cable (AYB) to the pumps

    • The Emergency/Run switches

    • The main disconnect

    • The wiring and connections to the sensor

    Correct Answer
    A. The wiring and connections to the sensor
    Explanation
    If the Hydro MPC is stopped and the display shows a primary sensor fault, the most appropriate step to take would be to check the wiring and connections to the sensor. This is because a fault in the wiring or connections could be causing the sensor to malfunction or not communicate properly with the system. By inspecting the wiring and connections, any issues or loose connections can be identified and fixed, potentially resolving the primary sensor fault.

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  • 19. 

    What menu tab(s) are used to troubleshoot a problem with a Hydro MPC?

    • Status home screen

    • Operation home screem

    • Alarm home screen

    • All of these

    Correct Answer
    A. All of these
    Explanation
    All of these menu tabs are used to troubleshoot a problem with a Hydro MPC. The Status home screen provides information about the current status of the system, allowing users to identify any issues. The Operation home screen allows users to monitor and control the system, helping them troubleshoot and adjust settings as needed. The Alarm home screen displays any active alarms or error messages, helping users identify and address problems. Therefore, all of these menu tabs are essential for troubleshooting a problem with a Hydro MPC.

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  • 20. 

    What is the most important bit of information needed when contacting BoosterpaQ Service to troubleshoot a problem with a Hydro MPC?

    • Hydro MPC S/N

    • Hydro MPC model number

    • Hydro MPC P/N

    • Number of pumps

    Correct Answer
    A. Hydro MPC S/N
    Explanation
    The most important bit of information needed when contacting BoosterpaQ Service to troubleshoot a problem with a Hydro MPC is the Hydro MPC S/N. The serial number is a unique identifier for the specific unit and allows the service team to accurately identify and track the history of the particular system. This information is crucial for providing the appropriate support and troubleshooting guidance for the Hydro MPC in question.

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  • 21. 

    What tools can be used to program a Hydro MPC, or troubleshoot Hydro MPC problems?

    • Ethernet cable, UV burner, USB to RS232 converter

    • G10, E-Tool, PROFI bus converter

    • R100, PC Tools, PC Link

    • PT100, E-Tool, BACnet converter

    Correct Answer
    A. R100, PC Tools, PC Link
    Explanation
    The tools that can be used to program a Hydro MPC or troubleshoot Hydro MPC problems are R100, PC Tools, and PC Link. These tools are specifically designed for this purpose and provide the necessary functionalities and connectivity options to effectively program and troubleshoot the Hydro MPC system.

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  • 22. 

    The Hydro MPC is turned on, but not running.  You notice a water shortage alarm on the status home page.  How do you get the Hydro MPC to run?

    • Turn the system on & off to clear the alarm

    • Call BoosterpaQ Service Support

    • Resolve the water shortage issue as this is an actual (presently occuring) alarm

    • Press OK to clear the alarm

    Correct Answer
    A. Resolve the water shortage issue as this is an actual (presently occuring) alarm
    Explanation
    To get the Hydro MPC to run when there is a water shortage alarm, the correct action is to resolve the water shortage issue. This means addressing the actual problem causing the alarm, such as checking for any obstructions or leaks in the water supply. Simply turning the system on and off or pressing OK to clear the alarm will not solve the underlying issue and allow the Hydro MPC to run properly. Calling BoosterpaQ Service Support may be necessary if the problem persists or if further assistance is needed.

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  • 23. 

    The pre-charge of a diaphragm tank can be set with a hydraulic load on the diaphragm

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The pre-charge of a diaphragm tank cannot be set with a hydraulic load on the diaphragm. The pre-charge refers to the initial pressure in the tank before it is connected to the system. It is typically set using a manual air valve or a pressure gauge. The hydraulic load on the diaphragm is the pressure exerted by the fluid inside the tank when it is connected to the system. These are two separate processes and cannot be done simultaneously. Therefore, the statement is false.

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  • 24. 

    Why is it important to be able to isolate, and drain, the diaphragm tan?

    • To allow an air purge from the tank

    • To allow the diaphram tank pre-charge to be set properly

    • To help reduce discharge pressure fluctuations

    • None of these

    Correct Answer
    A. To allow the diaphram tank pre-charge to be set properly
    Explanation
    It is important to be able to isolate and drain the diaphragm tank in order to allow the diaphragm tank pre-charge to be set properly. The pre-charge is the initial pressure that is set in the diaphragm tank before it is put into operation. By isolating and draining the tank, any excess air or water can be removed, ensuring that the pre-charge pressure is accurately set. This is important for the proper functioning and efficiency of the diaphragm tank.

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  • 25. 

    In which application should a Hydro MPC not be used?

    • Domestic water in a high rise building

    • Constant flow pumping sewage

    • Constant level in an industrial process

    • Constant pressure in an irrigation application

    Correct Answer
    A. Constant flow pumping sewage
    Explanation
    A Hydro MPC should not be used for constant flow pumping sewage because it is designed for domestic water applications in high rise buildings, maintaining a constant level in an industrial process, and providing constant pressure in an irrigation application. However, sewage pumping requires different equipment and specifications to effectively handle and transport waste materials. Therefore, a Hydro MPC is not suitable for this specific application.

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  • 26. 

    Some competitors measure the heat generated by a pump to stop the system at no flow

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Some competitors measure the heat generated by a pump to stop the system at no flow. This means that when there is no flow of liquid through the pump, the competitors utilize heat measurement as a method to detect this and stop the system. This technique is used as a safety measure to prevent damage to the pump or other components of the system when there is no flow.

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  • 27. 

    Where should you look for a CAD drawing of a Hydro MPC?

    • Call the local DSM

    • Hydro MPC Product Guide

    • BoosterpaQ website

    • Grundfos website

    Correct Answer
    A. BoosterpaQ website
    Explanation
    The correct answer is BoosterpaQ website. A CAD drawing of a Hydro MPC can be found on the BoosterpaQ website.

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  • 28. 

    Who has the primary responsibility to review specifications?

    • Distributor

    • BoosterpaQ Application Engineering

    • The local Grundfos DSM

    • Grundfos Product Support

    Correct Answer
    A. Distributor
    Explanation
    The distributor has the primary responsibility to review specifications. They are the ones who distribute the products and have a deep understanding of the specifications and requirements. They are also in direct contact with the customers and can provide valuable feedback and suggestions based on their expertise. The distributor plays a crucial role in ensuring that the specifications meet the customer's needs and are in line with the product capabilities.

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  • 29. 

    Are guide specifications for Hydro MPCs available, and if so, where can they be found?

    • Guide specifications are not available

    • Yes, Grundfos USA website

    • Yes, BoosterpaQ website

    • Yes, call Grundfos

    Correct Answer
    A. Yes, BoosterpaQ website
    Explanation
    The correct answer is "Yes, BoosterpaQ website" because it is stated that guide specifications for Hydro MPCs are available and can be found on the BoosterpaQ website.

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  • 30. 

    What CU351 control function allows a pressure setpoint to be changed based on an external analog signal?

    • External Setpoint Influence

    • Limit 1 or 2 Exceed

    • Atternative Setpoints

    • Proportional Pressure

    Correct Answer
    A. External Setpoint Influence
    Explanation
    External Setpoint Influence is the CU351 control function that allows a pressure setpoint to be changed based on an external analog signal. This means that an external signal can influence and adjust the pressure setpoint, allowing for more flexibility and control in the system.

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  • 31. 

    What CU351 control function changes the pump that's operating at a specific time?

    • Minimum Performance

    • Proportional Pressure

    • Forced Pump Changeover

    • Stop Function

    Correct Answer
    A. Forced Pump Changeover
    Explanation
    The CU351 control function that changes the pump operating at a specific time is Forced Pump Changeover. This function allows for automatic switching between pumps based on a predetermined schedule or specific conditions. It ensures that the pump in operation is changed at the designated time, optimizing performance and preventing overuse of a single pump.

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  • 32. 

    If you want to change the setpoint after running the start up wizard, how do you change it?

    • Change the setpoint in the operation menu

    • The setpoint can't be changed

    • Alternative setpoints

    • Run the startup wizard again

    Correct Answer
    A. Change the setpoint in the operation menu
    Explanation
    To change the setpoint after running the start-up wizard, you can navigate to the operation menu and modify the setpoint. This option allows you to adjust the desired value for the system's control parameter. It provides flexibility and customization by enabling you to adapt the setpoint according to your specific requirements.

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  • 33. 

    How can you determine the correct direction of motor rotation?

    • Check the rotation direction arrow on the CR pump

    • CW - Looking down on the top of the motor

    • Depends if the motor is running on a VFD

    • Direction of rotation is not important

    Correct Answer
    A. Check the rotation direction arrow on the CR pump
    Explanation
    The correct way to determine the correct direction of motor rotation is by checking the rotation direction arrow on the CR pump. This arrow indicates the direction in which the motor should rotate. By aligning the motor's rotation with the arrow, you can ensure that the motor is functioning properly and efficiently.

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  • 34. 

    Who should be contacted to arrange field support of a Hydro MPC?

    • Customer Service

    • BoosterpaQ Sizing & Applications Support

    • BoosterpaQ Service Support

    • BoosterpaQ Order Support

    Correct Answer
    A. BoosterpaQ Service Support
    Explanation
    To arrange field support of a Hydro MPC, the appropriate contact would be BoosterpaQ Service Support. This team specializes in providing support and assistance for BoosterpaQ systems, including field support for the Hydro MPC. Customer Service may not have the specific knowledge or expertise required for field support of this particular product. BoosterpaQ Sizing & Applications Support and BoosterpaQ Order Support are also not the most suitable contacts for arranging field support.

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  • 35. 

    Who should be contacted to discuss lead time on an existing Hydro MPC order?

    • Customer Service

    • BoosterpaQ Sizing & Applications Support

    • BoosterpaQ Service Support

    • BoosterpaQ Order Support

    Correct Answer
    A. BoosterpaQ Order Support
    Explanation
    The correct answer is BoosterpaQ Order Support. This is because they are the ones who can provide information and assistance specifically related to the order of a BoosterpaQ product. Customer Service may be able to provide general information, but BoosterpaQ Order Support would have more specific knowledge about lead times for existing orders. BoosterpaQ Sizing & Applications Support and BoosterpaQ Service Support are not directly related to order support, so they may not have the necessary information regarding lead times.

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  • 36. 

    Who should be contacted to help with sizing / selecting a Hydro MPC?

    • Customer Service

    • BoosterpaQ Sizing & Applications Support

    • BoosterpaQ Service Support

    • BoosterpaQ Order Support

    Correct Answer
    A. BoosterpaQ Sizing & Applications Support
    Explanation
    BoosterpaQ Sizing & Applications Support should be contacted to help with sizing/selecting a Hydro MPC. This department specializes in providing assistance and support specifically related to the sizing and application of BoosterpaQ products. They have the expertise and knowledge to guide customers in selecting the appropriate Hydro MPC system based on their specific requirements and needs.

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  • 37. 

    What is the horsepower range of 3/60/460 MLE motors?

    • 1/2 HP - 1-1/2 HP

    • 1-1/2 HP - 7-1/2 HP

    • 1 HP - 30 HP

    • 1 HP - 60 HP

    Correct Answer
    A. 1 HP - 30 HP
    Explanation
    The horsepower range of 3/60/460 MLE motors is 1 HP - 30 HP.

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  • 38. 

    The design requirement is 300 gpm @ 100 PSIG with a 3-pump system, with no redundancy. What is the flow & head rating of the individual pumps without friction loss?

    • 100 gpm @ 100 PSIG

    • 150 gpm @ 100 PSIG

    • 300 gpm @ 100 PSIG

    • None of the above

    Correct Answer
    A. 100 gpm @ 100 PSIG
    Explanation
    The correct answer is 100 gpm @ 100 PSIG because the design requirement is for a 3-pump system with no redundancy. This means that each individual pump needs to be able to provide the full flow and head rating of 300 gpm @ 100 PSIG. Since there are three pumps in the system, each pump only needs to provide one-third of the total flow and head rating, which is 100 gpm @ 100 PSIG.

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  • 39. 

    The design requirement is 300 gpm @ 100 PSIG with 3-pump system, with 50% reduntancy. What is the flow & head of the individual pumps without friction loss?

    • 100 gpm @ 100 PSIG

    • 150 gpm @ 100 PSIG

    • 300 gpm @ 100 PSIG

    • None of the above

    Correct Answer
    A. 150 gpm @ 100 PSIG
    Explanation
    The design requirement is for a 3-pump system with 50% redundancy, meaning that one pump can handle the entire flow and head requirement. Therefore, each individual pump should be able to handle half of the design requirement. Since the design requirement is 300 gpm, each individual pump should be able to handle 150 gpm. The head requirement remains the same at 100 PSIG for each pump. Therefore, the correct answer is 150 gpm @ 100 PSIG.

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  • 40. 

    What can be used to program a pump number into a MLE motor?

    • PC Tools

    • Buttons on the MLE motor

    • R100

    • Both A and C

    Correct Answer
    A. Both A and C
    Explanation
    Both A and C can be used to program a pump number into a MLE motor. PC Tools can be used to program the pump number, allowing for customization and adjustments to be made. Additionally, R100 can also be used to program the pump number into the MLE motor. Therefore, both options A and C are correct.

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  • 41. 

    Which affinity law is correct?

    • The change in flow is directly proportional to the change of speed

    • The change in pressure is a squared function of the change of speed

    • The change in HP is a cubed function of the change of speed

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    The correct answer is "All of the above". According to the affinity laws, all three statements are correct. The first statement states that the change in flow is directly proportional to the change of speed, which is known as the flow rate affinity law. The second statement states that the change in pressure is a squared function of the change of speed, which is known as the pressure affinity law. The third statement states that the change in HP (horsepower) is a cubed function of the change of speed, which is known as the power affinity law. Therefore, all three statements are correct.

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  • 42. 

    Which statement is correct for a constant pressure system with a changing flow demand?

    • Using a VFD / VFDs can reduce "water hammer"

    • Using a VFD / VFDs can lower the cost of electricty used to power the pump(s)

    • Using a VFD can allow you to reduce the hydraulic performance of the pump(s)

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    Using a VFD / VFDs (Variable Frequency Drive) in a constant pressure system with a changing flow demand can have several benefits. Firstly, it can reduce "water hammer," which is a sudden increase in pressure caused by the rapid closing or opening of valves. Secondly, it can lower the cost of electricity used to power the pump(s) by adjusting the speed of the motor to match the required flow rate, thus reducing energy consumption. Lastly, using a VFD can allow you to reduce the hydraulic performance of the pump(s) by adjusting the speed, which can be beneficial in situations where the flow demand is lower than the maximum capacity of the pump. Therefore, all of the given statements are correct.

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  • 43. 

    What is the benefit of using variable speed Hydro MPCs in a tank fill application?

    • Reduce "water hammer"

    • Control the time needed to fill the tank

    • Allow the user to switch between constand speed (tank fill) and variable speed (constant pressure to the network)

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    Using variable speed Hydro MPCs in a tank fill application provides multiple benefits. Firstly, it helps to reduce "water hammer," which is the sudden increase in pressure that occurs when a fluid in motion is forced to stop or change direction. Secondly, it allows for better control over the time needed to fill the tank, ensuring efficient and accurate filling. Lastly, it enables the user to switch between constant speed (tank fill) and variable speed (constant pressure to the network), providing flexibility and adaptability to different operational requirements.

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  • 44. 

    What is the warranty period for a Hydro MPC?

    • 12 Months from the date of installation or 24 months from the date of manufacture

    • 18 months from the date of installation or 24 months from the date of manufacture

    • 24 months from the date of installation or 24 months from the date of manufacture

    • 24 months from the date of installation or 30 months from the date of manufacture

    Correct Answer
    A. 24 months from the date of installation or 30 months from the date of manufacture
    Explanation
    The warranty period for a Hydro MPC is 24 months from the date of installation or 30 months from the date of manufacture.

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  • 45. 

    The Hydro MPC is available with a jockey pump

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement "The Hydro MPC is available with a jockey pump" is true. The jockey pump is a small pump that is used to maintain pressure in a water supply system. The Hydro MPC is a multi-pump system that is designed for boosting water pressure in various applications. By including a jockey pump in the Hydro MPC system, it ensures that the pressure is consistently maintained, preventing any fluctuations or drops in pressure. Therefore, the statement is true.

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  • 46. 

    For a variable speed, constant pressure system, what percentage of the setpoint pressure should the pre-charge of the bladder tank be set?

    • 40%

    • 50%

    • 70%

    • 90%

    Correct Answer
    A. 70%
    Explanation
    In a variable speed, constant pressure system, the pre-charge of the bladder tank should be set at 70% of the setpoint pressure. This is because the pre-charge pressure should be slightly lower than the desired system pressure to allow for expansion of the bladder and prevent the pump from cycling too frequently. Setting the pre-charge at 70% ensures that there is enough pressure to maintain a constant flow while also allowing for flexibility in the system.

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  • 47. 

    What is the advantage of a variable speed Hydro MPC in a tank fill application?

    • Greatly reduce "water hammer"

    • "Tune" the Hydro MPC into the system

    • Allow the user to easily switch to constant pressure if the tank is off line

    • All of these

    Correct Answer
    A. All of these
    Explanation
    A variable speed Hydro MPC in a tank fill application offers several advantages. Firstly, it greatly reduces "water hammer," which is the sudden increase in pressure caused by the rapid closing of valves. This helps to protect the system from damage and ensures a smoother operation. Secondly, it allows the user to "tune" the Hydro MPC into the system, meaning that they can adjust the speed and pressure to match the specific requirements of the application. Lastly, it provides the flexibility to easily switch to constant pressure if the tank is offline, ensuring a continuous water supply. Therefore, all of these advantages make the variable speed Hydro MPC the correct answer.

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  • 48. 

    When should a VFD be derated?

    • Elevation above 3,200 feet

    • Ambient temperature above 104 Degrees-F

    • Poor supply power quality

    • All of these

    Correct Answer
    A. All of these
    Explanation
    A VFD (Variable Frequency Drive) should be derated in all of these situations. When operating at elevations above 3,200 feet, the air density decreases, which affects the cooling of the VFD. This can lead to overheating and reduced performance. Similarly, when the ambient temperature exceeds 104 degrees Fahrenheit, the VFD may not be able to dissipate heat effectively, leading to derating. Poor supply power quality can also cause voltage spikes, harmonics, or other disturbances that can damage the VFD and require derating. Therefore, in all these scenarios, derating the VFD is necessary to ensure proper functioning and prevent damage.

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  • 49. 

    Where is pricing found for most Hydo MPCs?

    • Main Grundfos Price Book

    • BoosterpaQ Team

    • WebCAPS

    • BP Quote Config Excel program

    Correct Answer
    A. BP Quote Config Excel program
    Explanation
    The correct answer is BP Quote Config Excel program. This program is where pricing is found for most Hydo MPCs. The Main Grundfos Price Book, BoosterpaQ Team, and WebCAPS are not the correct sources for pricing information for most Hydo MPCs.

    Rate this question:

Quiz Review Timeline (Updated): Mar 22, 2023 +

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Aug 28, 2012
    Quiz Created by
    Grundfos

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