ALKA S.r.l.
Registered office: Via Teodoro Frizzoni 19 - 24121 Bergamo - Office: Via Molino Baertsch, 4 - 24124 Bergamo
Tel. +39 035 664881, Cell. +39 335 355569 - E-mail: info@alka-srl.com , PEC postmaster@pec.alka-srl.com
Bergamo Business Register, EORI, Tax Code and VAT No. IT02515810162 - Recipient code T04ZHR3
BG050196 mechanographic number, REA: BG 300962, Share capital €10,400.00 fully paid up.
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1- Cleaning split air conditioning lines
This video shows the cleaning procedure for split lines for the installation of a home air-conditioning system, in this case carried out by Clima Più of Curno (BG). Cleaning with ALKA Pro-Clean projectiles makes it possible to remove in a few seconds production and machining residues (soot, cutting chips, etc...) that are a risk to machine reliability.
By soaking the projectiles with a detergent it is possible to clean the copper pipes even more thoroughly, especially if it is necessary to convert old lines that used different refrigerant gases.
Using our system means you don’t have to blow large amounts of Nitrogen for cleaning, saving at least 50% and achieving a better result.
2- Cleaning copper pipes for Air Conditioning 55mm
A demonstration of how to clean a 60-meter-long copper pipe with a 55mm diameter. This is a remote chiller connection between evaporator and condenser.
The piping, made up of bends and "goosenecks", starts from the roof and, passing through 7 floors, ends in the underground garage. It is very important to remove from new pipes welding residues and other dirt, and in the video you can see what we removed from the new, welded pipe (black dust, welding residues, metal particles, etc.).
3- Cleaning underfloor heating system
In an underfloor heating system, depending on the type, over the years various kinds of deposits (such as algae or sludge) can build up, causing a drop in system efficiency and forcing you to raise the water temperature in order to achieve the same heating effectiveness. In some cases, if the issues are localized, you may also have only certain areas where the heat produced is insufficient. It is possible to check whether the problem is due to cleaning the coils in a simple and quick way, as shown in this video:
1- Each coil is disconnected from the manifold; first, only air is blown in to drain the water contained inside.
2- A first projectile is then shot to expel the remaining water and an initial part of the deposit; the operation is repeated with other projectiles until the deposit is completely removed.
This type of operation, repeated on 8-10 rooms, can be completed within 2/3h.
4- Cleaning an Underfloor Heating Circuit
A demonstration of how deposits can be removed from underfloor heating pipes. Mixed underfloor/radiator system without a plate heat exchanger to isolate the low-temperature/high-temperature circuit.
No. of manifold ports: 8 - Pipe diameter: 17mm - Circuit length: 110m each.
Commissioning year: 1999 - Year of first cleaning: October 2006
System condition before cleaning: estimated output reduction 10/15%
Supply water temperature before cleaning: 35°C
Supply water temperature after cleaning: 32°C
Intervention times: System draining 60min.
Cleaning with projectiles 15min.
System filling and start-up 120min.
5- Cleaning a Nitrogen weld on a T-branch
A demonstration of how much soot and slag is created when welding two previously cleaned copper pipes, even under nitrogen.
Note the ability to clean the "T" joints; simply hold one end closed, then the other, while firing the projectile.
6- Drying of 240m methane pipeline
This clip illustrates an operation performed on methane pipelines containing a significant amount of water and condensation.
A total length of 240 meters and two diameter variations required the use of a projectile that could adapt to, yet be equally effective on, internal diameters of 20 mm, 27 mm, and finally 30 mm.
As you can see, multiple shots were needed to remove a certain amount of water each time, but thanks to the speed of the operation (less than 20 seconds total for the entire journey), the desired result was achieved in just a few minutes.
7- Chimney Cleaning
The video shows how to clean a chimney using a suitably sized projectile and a nitrogen cylinder.
The test, conducted on a chimney specially assembled for the public demonstration organized by plumbing and heating retailer ARBO, was completed quickly by simply inserting the appropriately sized projectile into one end of the pipe, which was then connected to a flange to ensure a seal.
The projectile can be propelled using either standard compressed air or, as in this case, a small nitrogen cylinder connected directly to the flange. Once the valve is opened, the projectile takes just a few seconds to travel the entire length of the pipe.