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 procedure for cleaning 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 pellets allows you to remove in just a few seconds the production and processing residues (soot, cutting chips, etc...) that are a danger to the reliability of the machines. By soaking the pellets 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.
The use of our system means you do not have to blow large quantities 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 it is possible to clean a 60-meter-long copper pipe with a diameter of 55 mm. This is a remote connection of a chiller between the evaporator and the condenser.
The pipe, consisting of bends and "goosenecks," starts from the roof and, passing through 7 floors, ends in the underground garage. It is very important to remove welding residues and other dirt from new pipes, and in the video you can see what we removed from the new and welded pipe (black dust, welding residues, metal particles, etc.).
3- Cleaning of underfloor heating system coils
In a floor heating system, depending on the type, various kinds of deposits (such as algae or sludge) can accumulate over the years, causing the system's efficiency to decrease and forcing you to increase the water temperature in order to achieve the same heating effectiveness. In some cases, if the problems are localized, there may be only certain areas where the generated heat is insufficient. It is possible to check if the problem is due to the cleanliness of 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 discharge the water contained inside.
2- Then a first projectile is shot to expel the remaining water and an initial part of the deposit present; 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 2/3 hours.
4- Cleaning of an Underfloor Heating Circuit
A demonstration of how limescale can be removed from underfloor heating pipes. Mixed underfloor/radiator system without a plate heat exchanger for low temperature/high temperature circuit isolation.
Number of manifold outlets = 8 Pipe diameter = 17 mm Pipe length per circuit = 110
Year of commissioning = 1999 Year of first cleaning = October 2006
System condition before cleaning = estimated output reduction of 10/15%
Supply water temperature before cleaning = 35°C
Supply water temperature after cleaning = 32°C
Intervention times: - system draining = 60 minutes - cleaning operation with pellets = 15 minutes - system filling and commissioning = 120 minutes.
5- Cleaning of a weld in Nitrogen on a T-branch
A demonstration of how much soot and slag is created during the welding, even in nitrogen, of two previously cleaned copper pipes.
Note the possibility of cleaning "T" junctions; it is sufficient to keep one end closed and then the other while firing the projectile.
6- Drying 240m Methane pipeline
This clip illustrates an operation carried out on pipes for the transport of methane that contained a considerable amount of water and condensate inside.
A total length of 240m and two diameter changes made it necessary to use a projectile capable of adapting, but still being equally effective, both on an internal diameter of 20mm, and of 27 and finally 30mm.
As you can see, it was necessary to carry out several shots to remove a certain amount of water each time, but thanks to the speed of the operation (less than 20 seconds in total to cover the entire route), it was possible to achieve the desired result in just a few minutes.
7- Chimney Cleaning
The video shows how it is possible to clean a chimney flue by using a projectile of suitable size and a nitrogen cylinder.
The test, carried out on a chimney flue specially assembled for the demonstration organized for the public by the thermohydraulic material retailer ARBO, was performed in a short time simply by inserting the projectile of the appropriate diameter into one end of the pipe, which was then connected to a flange to ensure a tight seal.
For propelling the projectile, you can use regular 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 through the entire pipe.