Grundfos Hydro Mpc Evaluation
Please take the following quiz.
Questions and Answers
- 1.
What separates the CU351 controller from other operator interfaces?
- A.
Nothing, both operator interfaces can be programmed for multiple purposes.
- B.
CU351 has more flexible functions than any other operatoe interfaces for multiple purposes.
- C.
CU351 designed specifically for pumping systems instead of a general purpose operator interfaces
- D.
CU351 is made by a third party.
Correct Answer
C. CU351 designed specifically for pumping systems instead of a general purpose operator interfacesExplanation
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.Rate this question:
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- 2.
What is the warranty period for a Hydro MPC?
- A.
12 Months from the date of installation or 24 months from the date of manufacture
- B.
18 months from the date of installation or 24 months from the date of manufacture
- C.
24 months from the date of installation or 24 months from the date of manufacture
- D.
24 months from the date of installation or 30 months from the date of manufacture
Correct Answer
D. 24 months from the date of installation or 30 months from the date of manufactureExplanation
The warranty period for a Hydro MPC is 24 months from the date of installation or 30 months from the date of manufacture.Rate this question:
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- 3.
The Hydro MPC is available with a jockey pump
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
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.Rate this question:
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- 4.
What is the standard material(s) used for Hydro MPC manifolds?
- A.
304 SS
- B.
316 SS
- C.
Copper
- D.
All of these
Correct Answer
B. 316 SSExplanation
The standard material used for Hydro MPC manifolds is 316 SS, which stands for stainless steel. This material is commonly used in various industries due to its excellent corrosion resistance and durability. It is especially suitable for applications involving water and other corrosive fluids. 304 SS, another option listed in the answer choices, is also a type of stainless steel but is not specifically mentioned as the standard material for Hydro MPC manifolds. Copper, on the other hand, is not commonly used for manifolds in this context. Therefore, the correct answer is 316 SS.Rate this question:
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- 5.
A Hydro MPC can be connected to a building management system
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
A Hydro MPC can be connected to a building management system because it is designed to integrate and communicate with external systems. This allows for seamless monitoring and control of the pump system, enabling the building management system to efficiently manage and optimize the water supply. By connecting the Hydro MPC to the building management system, operators can remotely monitor performance, receive alerts, and make adjustments as needed, ensuring optimal operation and energy efficiency.Rate this question:
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- 6.
What is the maximum working pressure rating for Hydro MPCs with ANSI 150 # manifold connections?
- A.
150 PSIG
- B.
232 PSIG
- C.
250 PSIG
- D.
362 PSIG
Correct Answer
B. 232 PSIGExplanation
The maximum working pressure rating for Hydro MPCs with ANSI 150 # manifold connections is 232 PSIG.Rate this question:
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- 7.
How can the alarm log help with a pump problem?
- A.
Many different alarm occurances are displayed
- B.
The date & time stamp of each alarm can be used to help determine the cause of the alarm
- C.
Up to 24 alarm occurances will be stored
- D.
All of these
Correct Answer
D. All of theseExplanation
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.Rate this question:
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- 8.
When replacing an MLE on a Hydro MPC E system, what parameters must be set for proper operation?
- A.
Pump Number
- B.
Digial Input
- C.
Signal Relay
- D.
All of these
Correct Answer
D. All of theseExplanation
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.Rate this question:
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- 9.
On a Hydro MPC E using MLE motors, how can the MLE Signal Relay setting can be identified?
- A.
CU351
- B.
An R100
- C.
The Hydro MPC I&O manual
- D.
The Hydro MPC Product Guide
Correct Answer
B. An R100Explanation
The MLE Signal Relay setting for a Hydro MPC E using MLE motors can be identified by referring to the R100 manual.Rate this question:
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- 10.
Panel component part numbers are identified in what document?
- A.
The panel schematic
- B.
The panel BOM (bill of material)
- C.
The panel layout drawing
- D.
None of these
Correct Answer
B. 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.Rate this question:
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- 11.
Purchase orders for configured (programmed) replacement parts must be placed through who?
- A.
The Customer Support Center
- B.
The Extranet
- C.
The Service Department
- D.
Your local DSM
Correct Answer
C. The Service DepartmentExplanation
The Service Department is the correct answer because they are responsible for handling and managing the replacement parts for configured products. They have the knowledge and expertise to understand the specific requirements for each replacement part and can ensure that the correct parts are ordered and delivered to the customer. The Customer Support Center may assist in providing information and support, but the actual purchase orders should be placed through the Service Department. The Extranet and local DSM may not have the necessary authority or resources to handle these types of orders.Rate this question:
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- 12.
For a variable speed, constant pressure system, what percentage of the setpoint pressure should the pre-charge of the bladder tank be set?
- A.
40%
- B.
50%
- C.
70%
- D.
90%
Correct Answer
C. 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.Rate this question:
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- 13.
If the Hydro MPC is stopped and the display shows a primary sensor fault, you should check:
- A.
The GENI bus cable (AYB) to the pumps
- B.
The Emergency/Run switches
- C.
The main disconnect
- D.
The wiring and connections to the sensor
Correct Answer
D. The wiring and connections to the sensorExplanation
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.Rate this question:
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- 14.
What menu tab(s) are used to troubleshoot a problem with a Hydro MPC?
- A.
Status home screen
- B.
Operation home screem
- C.
Alarm home screen
- D.
All of these
Correct Answer
D. All of theseExplanation
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.Rate this question:
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- 15.
What is the most important bit of information needed when contacting BoosterpaQ Service to troubleshoot a problem with a Hydro MPC?
- A.
Hydro MPC S/N
- B.
Hydro MPC model number
- C.
Hydro MPC P/N
- D.
Number of pumps
Correct Answer
A. Hydro MPC S/NExplanation
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.Rate this question:
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- 16.
What tools can be used to program a Hydro MPC, or troubleshoot Hydro MPC problems?
- A.
Ethernet cable, UV burner, USB to RS232 converter
- B.
G10, E-Tool, PROFI bus converter
- C.
R100, PC Tools, PC Link
- D.
PT100, E-Tool, BACnet converter
Correct Answer
C. R100, PC Tools, PC LinkExplanation
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.Rate this question:
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- 17.
What is the best way to test a LLS (Liquid Level Switch) to determine whether it's working properly?
- A.
Start & stop the system several times, check for proper operation
- B.
Remove the switch, submerge it in a bucket of water, check for proper operation
- C.
Call BoosterpaQ Service Support
- D.
Drain & refill the system, check for proper operation
Correct Answer
B. Remove the switch, submerge it in a bucket of water, check for proper operationExplanation
The best way to test a LLS (Liquid Level Switch) to determine whether it's working properly is to remove the switch, submerge it in a bucket of water, and then check for proper operation. This method allows for a direct test of the switch's functionality in a real-world scenario. Starting and stopping the system several times or draining and refilling the system may not accurately test the switch's performance, while calling BoosterpaQ Service Support may be a valid option but not the best way to test the switch's functionality.Rate this question:
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- 18.
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?
- A.
Turn the system on & off to clear the alarm
- B.
Call BoosterpaQ Service Support
- C.
Resolve the water shortage issue as this is an actual (presently occuring) alarm
- D.
Press OK to clear the alarm
Correct Answer
C. Resolve the water shortage issue as this is an actual (presently occuring) alarmExplanation
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.Rate this question:
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- 19.
Where can the password to unlock the CU351 be located?
- A.
Hydro MPC I & O
- B.
Hydro MPC Product Guide
- C.
CU351 I & O
- D.
There is no password
Correct Answer
A. Hydro MPC I & OExplanation
The password to unlock the CU351 can be located in the Hydro MPC I & O guide.Rate this question:
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- 20.
If the suction & discharge sensors are reversed, how will the Hydro MPC operate?
- A.
It won't run
- B.
It will run at maximun speed
- C.
It will run at minimun speed
- D.
It will operate normally
Correct Answer
B. It will run at maximun speedExplanation
If the suction and discharge sensors are reversed, the Hydro MPC will run at maximum speed. This is because the reversed sensors will give incorrect readings to the system, causing it to think that there is a high demand for water. As a result, the system will operate at maximum speed in an attempt to meet this demand.Rate this question:
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- 21.
What will cause a Hydro MPC to not stop running?
- A.
Reversed suction & discharge sensors
- B.
Incorrect diaphragm tank pressure
- C.
Discharge sensor valve closed
- D.
All of these
Correct Answer
D. All of theseExplanation
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.Rate this question:
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- 22.
What is the first thing to check if you feel that a constant pressure Hydro MPC should be running, but it's not running?
- A.
If there's a demand
- B.
If the control mode is set to closed loop
- C.
If the operating mode is set to normal
- D.
If one pump is set in standby
Correct Answer
C. If the operating mode is set to normalExplanation
The first thing to check if a constant pressure Hydro MPC should be running but it's not running is if the operating mode is set to normal. This means that the system is not in standby mode or any other mode that would prevent it from running. By checking the operating mode, you can ensure that the system is in the correct mode to start running and meet the demand.Rate this question:
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- 23.
The pre-charge of a diaphragm tank can be set with a hydraulic load on the diaphragm
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
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.Rate this question:
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- 24.
Why is it important to be able to isolate, and drain, the diaphragm tan?
- A.
To allow an air purge from the tank
- B.
To allow the diaphram tank pre-charge to be set properly
- C.
To help reduce discharge pressure fluctuations
- D.
None of these
Correct Answer
B. To allow the diaphram tank pre-charge to be set properlyExplanation
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.Rate this question:
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- 25.
In what markets can a Hydro MPC be applied?
- A.
Commercial
- B.
Industrial
- C.
Municipal
- D.
All of these
Correct Answer
D. All of theseExplanation
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.Rate this question:
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- 26.
What is the advantage of a variable speed Hydro MPC in a tank fill application?
- A.
Greatly reduce "water hammer"
- B.
"Tune" the Hydro MPC into the system
- C.
Allow the user to easily switch to constant pressure if the tank is off line
- D.
All of these
Correct Answer
D. All of theseExplanation
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.Rate this question:
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- 27.
With a variable speed constant pressure system, where on the curve should the max flow point be located
- A.
To the right of BEP of the individual pumps
- B.
To the left of BEP of the individual pumps
- C.
At BEP of the individual pumps
- D.
Doesn't matter
Correct Answer
A. To the right of BEP of the individual pumpsExplanation
In a variable speed constant pressure system, the max flow point should be located to the right of the BEP (Best Efficiency Point) of the individual pumps. This is because at the BEP, the pumps operate at their maximum efficiency, and if the flow point is located to the left of the BEP, it would result in reduced efficiency and increased energy consumption. By locating the max flow point to the right of the BEP, the system can operate at a higher efficiency and optimize energy usage.Rate this question:
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- 28.
In which application should a Hydro MPC not be used?
- A.
Domestic water in a high rise building
- B.
Constant flow pumping sewage
- C.
Constant level in an industrial process
- D.
Constant pressure in an irrigation application
Correct Answer
B. Constant flow pumping sewageExplanation
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.Rate this question:
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- 29.
For what application should an "S" type Hydro MPC (constant speed start / stop) primarily be used?
- A.
Constant pressure
- B.
Transfer
- C.
Constant level
- D.
Constant flow
Correct Answer
B. TransferExplanation
The "S" type Hydro MPC (constant speed start/stop) should primarily be used for transfer applications. This means that it is designed to transfer liquids from one location to another, such as pumping water from a well to a storage tank. It is not designed for maintaining a constant pressure, level, or flow, but rather for the specific purpose of transferring liquids.Rate this question:
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- 30.
Which selection best describes the information needed to size / select a Hydro MPC for a high rise building operation?
- A.
Flow rate, voltage. horsepower
- B.
Flow rate, building height
- C.
Flow rate, inlet pressure, static head, friction loss, pressure requirement on roof
- D.
Flow rate, building height, inlet pressure
Correct Answer
C. Flow rate, inlet pressure, static head, friction loss, pressure requirement on roofExplanation
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.Rate this question:
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- 31.
Which competitor offers integrated motors & drives?
- A.
G & L
- B.
Patterson
- C.
Ebara
- D.
None of these
Correct Answer
A. G & LExplanation
G & L is the competitor that offers integrated motors and drives. This means that G & L provides a combination of motors and drives in a single integrated system, eliminating the need for separate components. The other options, Patterson and Ebara, do not offer integrated motors and drives. Therefore, the correct answer is G & L.Rate this question:
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- 32.
Some competitors measure the heat generated by a pump to stop the system at no flow
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
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.Rate this question:
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- 33.
What is the maximum number of pumps available on a standard Hydro MPC?
- A.
3
- B.
4
- C.
6
- D.
8
Correct Answer
C. 6Explanation
A standard Hydro MPC can have a maximum of 6 pumps.Rate this question:
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- 34.
If someone requests a 50/50/50 system, how many pumps are being requested, and how much redundancy would the system have?
- A.
6 Pumps, 3 as back up
- B.
3 Pumps, 50% redundancy
- C.
3 Pumps, 100% redundancy
- D.
5 Pumps, 1 backup
Correct Answer
B. 3 Pumps, 50% redundancyExplanation
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.Rate this question:
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- 35.
When should a VFD be derated?
- A.
Elevation above 3,200 feet
- B.
Ambient temperature above 104 Degrees-F
- C.
Poor supply power quality
- D.
All of these
Correct Answer
D. All of theseExplanation
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.Rate this question:
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- 36.
Where can the BP Quote Config Excel program be found?
- A.
Grundfos USA website
- B.
WinCAPS
- C.
Have to get it from BoosterpaQ Applications
- D.
Grundfos Extranet
Correct Answer
D. Grundfos ExtranetExplanation
The BP Quote Config Excel program can be found on the Grundfos Extranet.Rate this question:
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- 37.
What is the primary document that can be used to learn / understand the functionality of a Hydro MPC?
- A.
CU351 I & O
- B.
Hydro MPC I & O
- C.
Hydro MPC Product Guide
- D.
CR Product Guide
Correct Answer
B. Hydro MPC I & OExplanation
The primary document that can be used to learn/understand the functionality of a Hydro MPC is the Hydro MPC I & O. This document would provide the necessary information and instructions on how to operate and install the Hydro MPC system. The CU351 I & O, Hydro MPC Product Guide, and CR Product Guide may contain relevant information, but they are not specifically tailored to the Hydro MPC system.Rate this question:
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- 38.
Where should you look for a CAD drawing of a Hydro MPC?
- A.
Call the local DSM
- B.
Hydro MPC Product Guide
- C.
BoosterpaQ website
- D.
Grundfos website
Correct Answer
C. BoosterpaQ websiteExplanation
The correct answer is BoosterpaQ website. A CAD drawing of a Hydro MPC can be found on the BoosterpaQ website.Rate this question:
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- 39.
Where should you look for Hydro MPC component information?
- A.
Call the local DSM
- B.
Hydro MPC Product Guide
- C.
BoosterpaQ website
- D.
Grundfos website
Correct Answer
C. BoosterpaQ websiteExplanation
The correct answer is BoosterpaQ website. This is because the question is asking where to look for Hydro MPC component information, and the BoosterpaQ website specifically provides information on the Hydro MPC components.Rate this question:
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- 40.
Who has the primary responsibility to review specifications?
- A.
Distributor
- B.
BoosterpaQ Application Engineering
- C.
The local Grundfos DSM
- D.
Grundfos Product Support
Correct Answer
A. DistributorExplanation
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.Rate this question:
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- 41.
Are guide specifications for Hydro MPCs available, and if so, where can they be found?
- A.
Guide specifications are not available
- B.
Yes, Grundfos USA website
- C.
Yes, BoosterpaQ website
- D.
Yes, call Grundfos
Correct Answer
C. Yes, BoosterpaQ websiteExplanation
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.Rate this question:
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- 42.
Where is pricing found for most Hydo MPCs?
- A.
Main Grundfos Price Book
- B.
BoosterpaQ Team
- C.
WebCAPS
- D.
BP Quote Config Excel program
Correct Answer
D. BP Quote Config Excel programExplanation
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:
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- 43.
If a desired feature / option is not listed in the Hydro MPC pricing, where can the pricing be obtained?
- A.
Call Customer Service
- B.
Call BoosterpaQ Order Support
- C.
Call BoosterpaQ Product Support
- D.
BP Quote Config Excel program
Correct Answer
C. Call BoosterpaQ Product SupportExplanation
If a desired feature or option is not listed in the Hydro MPC pricing, the pricing can be obtained by calling BoosterpaQ Product Support.Rate this question:
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- 44.
What type of pump is required to function as a jockey (pilot) pump on a Hydro MPC?
- A.
CRE
- B.
CR
- C.
A pump larger that the "main pumps"
- D.
We don't offer a jockey pump on a Hydro MPC
Correct Answer
A. CREExplanation
The correct answer is CRE. A jockey pump is a small pump that is used to maintain system pressure in a water distribution system. It operates at a lower flow rate and higher pressure compared to the main pumps. The Hydro MPC is a multi-pump controller, and the CRE pump is specifically designed for jockey pump applications. Therefore, the CRE pump is the appropriate type of pump required to function as a jockey pump on a Hydro MPC.Rate this question:
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- 45.
What is the most cost effective way to use several same sized pumps and one large pump (for emergency flow) on a Hydro MPC?
- A.
Use two CU351 controllers
- B.
Use PC Tools to change the priority of the large pump
- C.
Can't be done
- D.
Use the standby pump function
Correct Answer
B. Use PC Tools to change the priority of the large pumpExplanation
Using PC Tools to change the priority of the large pump allows for the most cost-effective way to use several same-sized pumps and one large pump on a Hydro MPC. By changing the priority, the system can be set up to use the smaller pumps for regular operation and switch to the large pump only in case of emergency or high flow demand. This ensures efficient use of resources and minimizes energy consumption, making it a cost-effective solution.Rate this question:
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- 46.
AI3 (Analog Input 3) can be used for what?
- A.
Limiting the max speed of a VFD
- B.
Pump sequencing
- C.
Setting the rotation of a pump
- D.
External analog influence
Correct Answer
D. External analog influenceExplanation
AI3 (Analog Input 3) can be used for external analog influence. This means that it can be used to receive and interpret analog signals from external sources, allowing them to influence the operation of the system. This could include adjusting the speed of a VFD (Variable Frequency Drive), sequencing pumps, or setting the rotation of a pump based on the external analog input.Rate this question:
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- 47.
What CU351control function is used to set different pressure setpoints at different times of the day?
- A.
Alternate setpoints (Open Loop)
- B.
Clock Program
- C.
Alternate setpoints (Closed Loop)
- D.
Proportional Pressure
Correct Answer
B. Clock ProgramExplanation
The CU351 control function used to set different pressure setpoints at different times of the day is the Clock Program. This function allows for the automatic adjustment of pressure setpoints based on a predefined schedule, ensuring that the system operates at optimal levels throughout the day. By programming different setpoints for different times, the control system can adapt to varying demand and maintain the desired pressure levels efficiently.Rate this question:
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- 48.
What CU351 control function allows a pressure setpoint to be reduced at low flow rates?
- A.
Alternate setpoints (Open Loop)
- B.
Clock Program
- C.
Alternate setpoints (Closed Loop)
- D.
Proportional Pressure
Correct Answer
D. Proportional PressureExplanation
The CU351 control function that allows a pressure setpoint to be reduced at low flow rates is Proportional Pressure. This control function adjusts the pressure setpoint based on the flow rate, reducing it at low flow rates to maintain optimal system performance. The other options, such as Alternate setpoints (Open Loop), Clock Program, and Alternate setpoints (Closed Loop), do not specifically address the ability to reduce the pressure setpoint at low flow rates.Rate this question:
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- 49.
What CU351 control function allows a pressure setpoint to be changed based on an external analog signal?
- A.
External Setpoint Influence
- B.
Limit 1 or 2 Exceed
- C.
Atternative Setpoints
- D.
Proportional Pressure
Correct Answer
A. External Setpoint InfluenceExplanation
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.Rate this question:
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- 50.
What CU351 control function determines the number of pumps available to meet demand?
- A.
Minimum Operation
- B.
Standby Pumps
- C.
Alternative Setpoints
- D.
Maximum Pressure
Correct Answer
B. Standby PumpsExplanation
The CU351 control function that determines the number of pumps available to meet demand is "Standby Pumps." This function allows for additional pumps to be activated when the demand increases, ensuring that there are enough pumps to meet the required flow rate.Rate this question:
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Mar 22, 2023Quiz Edited by
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Aug 28, 2012Quiz Created by
Grundfos
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