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Electronic device for pump sump cleaning
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Features
| Prevents fat and crust build-up in pump sumps | | | | | Reduces the need for de-sludging and manual maintenance | | | | | Can be retrofit into existing stations that need frequent cleaning | | | | | Small dimensions and DIN-rail hold makes APF easy to fit into cabinets | | | | | Works as assisting controller to primary control system | | | | | Suitable for single or dual pump stations |
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- see pictures from a real pump station!
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 (798 KB)
- Case story leaflet (English version)
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Background
Pump sumps can act as collecting points for dirt and sludge that accumulates in the pump network.
If not dealt with, this leads to reduced pump efficiency, clogging of the pump and malfunction of the level regulation system.
To prevent this, manual cleaning and maintenance is performed at regular intervals. This means consumption of time and money.
Automatic cleaning with APF-Cleaner
APF-Cleaner is an electronic pump sump cleaning device that helps to prevent the accumulation of dirt in the sump.
The function is to supplement the primary level control system in either a single or a dual pump station.
The device is designed to run the pumps to obtain the lowest possible water level in the sump, at which air is drawn into the impeller and the pump starts to "snore". The point is not to let the pump snore - on the contrary snoring is minimised - but prior to snoring the pump is able to pump away the grease and dirt on the water surface. Entraining air at low operating depths and a high level of turbulence at the end of the pumping are other desirable effects. The turbulence stirs up some of the dirt and grease on the sump floor, which are pumped away.
The removal of both floating and settled solids during pumping reduces routine maintenance and sump cleaning such as sparging and desludging. Another effect is a significant improvement of reliability.
Applications
The APF-Cleaner system can be used for pump stations equipped with Flygt type CP/DP 3085-3300 pumps in both standard and Ex-versions.
APF-Cleaner is especially effective in combination with the so-called TOP-stations; this due to the narrow and shallow design of the sump bottom, which results in a minimum of residual water after pumping down.
Cleaning
At regular pumping cycles, the pumps are started and stopped by a primary level control system.
But, on a pre-set number of cycles each 24 hours, the APF-Cleaner overrides the primary controller to perform a "cleaning" cycle.
Cleaning frequency
The number of cleaning cycles per 24 hours can be selected on the front of the APF-Cleaner to 0, 1, 3, 5, 10, 15, 25 or 40 times.
Stop function
When the water in the sump has dropped to such a level that the pump begins to draw air, the motor current will drop. The APF-Cleaner detects this and stops the pump.
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| APF-Cleaner: |
84 03 48 |
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| Current transformer 10/0,055 A: |
83 95 85 |
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| Current transformer 25/0,055 A: |
83 95 86 |
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| Current transformer 50/0,055 A: |
83 95 87 |
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| Current transformer 100/0,055 A: |
83 95 59 |
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| Technical specification |
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| English version: (106 KB) |
89 27 25 |
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| Swedish version: |
89 27 24 |
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| German version: |
89 27 18 |
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| French version: (144 KB) |
89 41 31 |
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| Italian version: |
89 27 23 |
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(784 KB)
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