APF-CleanerAPF-Cleaner

The electronic

pump sump cleaning device,

part of the Flygt

‘Sludge-free pumping’ program!

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

APF-Cleaner APF-Cleaner

• Cleaning effect by pumping down to ‘snoring’

• Pump stops when current drops

APF-Cleaner APF-Cleaner

Normal stop level

Stop level at cleaning

Start level

APF-Cleaner APF-Cleaner

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

By pumping down to the lowest level:

The number of cleaning cycles per 24-hour period, is preset on the front

APF-Cleaner 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)

APF-Cleaner APF-Cleaner

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

control system

Direct effects of using APF-Cleaner

Normal stop level

Stop level at cleaning

Start level

APF-Cleaner APF-Cleaner

Reduced maintenance cost Improved environment Less interruptions of pump operation

Overall benefits of using APF-Cleaner

Pictures from a CASE-STORY: Godthem pump station, Stockholm

Pump station surroundings, Djurgården Stockholm

“Two nearby restaurants feed lots of fat into the sump”

Before installation of APF-Cleaner

Sump cleaning

Six weeks after installation of APF-Cleaner

“Still very little fat and no crust formation”

Hornstull pump station in Stockholm:

=> No sludge removal for two years

(sludge removal every 2 months prior to installation of APF)

APF-CleanerAPF-Cleaner

in Stockholm

• About 20 APF-Cleaner units installed in Stockholm

• APF growing to be a standard solution

Djurgården (Godthem case story) in Sockholm:

= > No sludge removal for nine months

(sludge removal every 2-3 months prior to installation of APF)

Experiences from Stockholm Municipality:

APF-Cleaner APF-Cleaner

• 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

Toilets, flushing with sparse volume of water is a trend. Drawbacks are:

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

APF-Cleaner feedback APF-Cleaner feedback

APF-CleanerAPF-Cleaner Wiring example 1Wiring example 1

Pump 1 contactor coil

Pump 2 contactor coil

P1P2

Primary control system

APF pump output relays connected in parallel with primary controller relays

APF-CleanerAPF-CleanerWiring example 2Wiring example 2

24 VAC

L1L2L3

Pump

Stop switch Start switch

APF pump output relays connected in parallel with stop level switch

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’

I1

5 6 7 8

I2

APF- Cleaner

L1

L2

L3

L1

L2

L3P1

P2

APF-CleanerAPF-CleanerStop functionStop function

0

1

2

3

4

5

6

7

8

9

10

0 10 20 30 40 50 60 70 80 90 100 110 120 130

0

50

100

150

200

250

Pump current [A]

Pump stop

Undercurrent

Water level at ’snoring’

Time [s]

Current stop level

APF-CleanerAPF-Cleaner

Water level

Stop functionStop function

Water level

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.

APF-CleanerAPF-CleanerPatent granted in Sweden

pending in the US and other countries

APF-Cleaner 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!!

APF-Cleaner 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