Question 1 of 8
Intermediate

What might be the reason a wastewater pump solution requires a big free passage?

Question 2 of 8
Intermediate

What are the benefits of a pumping station with a separate valve chamber?

Question 3 of 8
Intermediate

Why is it important that the distance between the start and stop level is not too long?

Question 4 of 8
Intermediate

How far below ground should the manifold – or the discharge pipe – be installed?

Question 5 of 8
Intermediate

What is the purpose of the start level sensor?

Question 6 of 8
Intermediate

What makes the S-tube® impeller virtually clog-free?

Question 7 of 8
Intermediate

What is the main disadvantage of over-dimensioning a wastewater pit?

Question 8 of 8
Intermediate

Can a sewage pump handle all types of wastewater?

Question 8 of 8
Intermediate

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1: What might be the reason a wastewater pump solution requires a big free passage?
The big free passage will eliminate blocking of impeller.
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1: What might be the reason a wastewater pump solution requires a big free passage?
The need for high flow and/or a high content of solids.
1: What might be the reason a wastewater pump solution requires a big free passage?
With the big free passage the pump can also pump wastewater contaminated with sand and gravel.
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2: What are the benefits of a pumping station with a separate valve chamber?
It allows service and maintenance on the valves to be carried out without human interaction with the pit itself.
2: What are the benefits of a pumping station with a separate valve chamber?
The pump station do not need to be that deep, because now the valves are not in the chamber with the wastewater.
2: What are the benefits of a pumping station with a separate valve chamber?
There is no need for an intermediate deck in the pump station for the people there shall service or maintain the valves.
3: Why is it important that the distance between the start and stop level is not too long?
If the distance is too long, the contractor shall dig too deep in the ground for the pump station.
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3: Why is it important that the distance between the start and stop level is not too long?
If the distance is too long, it might require longer motor cable for the pump due to the depth of the pump station.
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3: Why is it important that the distance between the start and stop level is not too long?
If the distance is too long it reduces the number of cycles, which may cause sedimentation because the water stays in the pit too long.
4: How far below ground should the manifold – or the discharge pipe – be installed?
It depends on local regulation but typically 1 meter down.
4: How far below ground should the manifold – or the discharge pipe – be installed?
Deep enough not to be damaged by roots from trees and bushes.
4: How far below ground should the manifold – or the discharge pipe – be installed?
Not deeper than gravity to the recipient can be established with a gradient of 1 cm per meter. (0.032 ft per 3.28 ft).
5: What is the purpose of the start level sensor?
It will send an alarm when the water reaches this level and the pump do not start.
5: What is the purpose of the start level sensor?
It will stop the pump when the water level is lowered to below this level after a pump start.
5: What is the purpose of the start level sensor?
It activates the pump when the water reaches this level.
6: What makes the S-tube® impeller virtually clog-free?
The excellent hydraulic efficiency and free passage.
6: What makes the S-tube® impeller virtually clog-free?
The big free passage up to 160 mm (6.3”).
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6: What makes the S-tube® impeller virtually clog-free?
The S-tube® impeller has either a SmartTrim function or a replaceable neck ring to secure the right impeller clearance.
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7: What is the main disadvantage of over-dimensioning a wastewater pit?
Unnecessary investment in the larger civil work.
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7: What is the main disadvantage of over-dimensioning a wastewater pit?
Too big distance between the pumps with two or more pumps installed.
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7: What is the main disadvantage of over-dimensioning a wastewater pit?
The wastewater stays in the pit too long, which leads to sedimentation.
8: Can a sewage pump handle all types of wastewater?
Yes if the pH value is within 4 – 9 and max. dry content 3 to 5%.
8: Can a sewage pump handle all types of wastewater?
Yes with solids up to 100 mm (4”) and max. dry content 3 to 5%.
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8: Can a sewage pump handle all types of wastewater?
Yes if gravels and stones are max 100 mm (4”).
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