ANVNDARSEMINARIUM

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APF-Cleaner
The electronic pump sump cleaning device, part
of the Flygt Sludge-free pumping program!
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APF-Cleaner

• 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 manual 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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APF-Cleaner

• Cleaning effect by pumping down to snoring
• Pump stops when current drops

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APF-Cleaner
By pumping down to the lowest level

• Grease and solids on the surface are pumped away
• Increased turbulence creates suspension
• Residual water volume after stop is minimal

The number of cleaning cycles per 24-hour period,
is preset on the front
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APF-Cleaner
A cleaning cycle is manually inititated by
depressing pushbutton Clean on the front
Lamp Cleaning next cycle is lit to acknowledge
(Cleaning then takes place the next time a pump
is started by the primary controller)
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APF-Cleaner
Direct effects of using APF-Cleaner

• Reduction of solids and fat
• Prevention of crust build-up
• Reduction of odour
• Increased reliability of pumps and control system

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APF-Cleaner
Overall benefits of using APF-Cleaner

• Reduced maintenance cost
• Improved environment
• Less interruptions of pump operation

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Pictures from a CASE-STORY
Godthem pump station, Stockholm
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Pump station surroundings, Djurgården
Stockholm Two nearby restaurants feed lots of
fat into the sump
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Before installation of APF-Cleaner
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Sump cleaning
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Six weeks after installation of
APF-Cleaner Still very little fat and no crust
formation
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APF-Cleaner in Stockholm
Djurgården (Godthem case story) in Sockholm gt
No sludge removal for nine months (sludge
removal every 2-3 months prior to installation
of APF)
Hornstull pump station in Stockholm gt No sludge
removal for two years (sludge removal every 2
months prior to installation of APF)

• About 20 APF-Cleaner units installed in Stockholm
• APF growing to be a standard solution

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APF-Cleaner
Experiences from Stockholm Municipality
Toilets, flushing with sparse volume of water is
a trend. Drawbacks are

• Surface crusts and sludge build up in pump sumps
• Flies breed and lay eggs
• Bad smell
• Pumps clog
• Level control equipment is disturbed
• Costly sludge removal is required

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APF-Cleaner feedback

• Very good experiences from 3 years on the market
• Has solved many problems with crust and sludge
• Content customers come back
• Reliable and maintenance free

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APF-Cleaner Wiring example 1
APF pump output relays connected in parallel with
primary controller relays
Primary control system
P1
P2
Pump 1 contactor coil
Pump 2 contactor coil
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APF-CleanerWiring example 2
APF pump output relays connected in parallel with
stop level switch
24 VAC
Stop switch
Start switch
Pump
L1 L2 L3
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APF-Cleaner
Stop function

• APF measures pump current with current
  transformers
• APF knows the normal current by repeated
  measurements of the pump current
• Pump is stopped at undercurrent or current
  transient typical for snore

L1
L2
P1
L3
L1
P2
L2
L3
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6
7
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I2
I1
APF-
Cleaner
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APF-Cleaner
Stop function
Pump current A
Water level
Pump stop
Current stop level
Undercurrent
Water level
Water level at snoring
Time s
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APF-Cleaner Patent granted in Sweden pending in
the US and other countries
A method to control stops of an intermittenly
operating motor such as a driving motor for a
submersible pump ... ...characterized in that
pumping down to a lower level takes place at
certain times, e.g. once or at certain times
per day or after a certain number of pump starts.
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APF-Cleaner

• Is unique and patented
• Can solve problems with sludge and dirt
• Gives us goodwill
• Can work as a door opener for pump sales

Use the potential of APF-Cleaner!!
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APF-Cleaner
Part numbers
APF-Cleaner .. 84 03 48 Current
transformer 10/0,055 A. 83 95 85 Current
transformer 25/0,055 A. 83 95 86 Current
transformer 50/0,055 A 83 95 87