Operating Instructions


The window frames are protected from scratches thanks to the high quality surface finish. Pay special attention to the cleaning products - they should not be aggressive (abrasive and solvents); when cleaning it is also necessary to follow some basic rules:

  • The safeguard patches should not stay more than 30 days on the profile exposed to external weather conditions. Otherwise, it is extremely difficult, and in some cases, impossible to remove them without leaving traces.
  • Keep from rubbing or distortion the profile’s protective layer.
  • As all moving metal parts, the mechanism also requires maintenance, namely cleaning with a dry brush of the dust adhering to it and lubrication with suitable materials. It is desirable not to let sand, chips and other foreign matter in the mechanism - they could damage it.
  • If the walls of the windows have not yet been plastered, in any case do not remove the pads (logs) between the masonry and the frame - they provide flawless functioning of the wings of the window MUST NOT be removed. The pads will remain in the plaster.
  • After completing installation, please clean to the bottom frame using a vacuum cleaner with peaked nozzle. Any metal shavings left from the installation can cause the appearance of rust.
  • After installing the window/s you should remove the protective film (tape). In any further repairs to protect against contamination of the window/s only foils recommended by the windows’ manufacturer should be used.
  • The purchased by you windows have an installed quality hardware. Keep in mind the handle of the window to be always in a vertical position (up/down) or horizontal.
  • Leaving the handle in an intermediate position can cause false opening (except when there is installed special hardware providing a gap for ventilation). It is possible to happen so that in the open upper position of the wing, the same to be rotated on a vertical axis. Do not be afraid! The so-called “scissors” fitting of the hardware retains the wing at the top. Move the handle up (in position for the upper opening), close the window and then turn the handle in a horizontal position (open on vertical axis). The window wings, according to the type of the fitting, are always to be closed as follows:
    • Closed - the handle is vertically downwards;
    • Fully open - the handle is horizontal;
    • Ventilation - the handle is vertically up - only when the wing is with a combined hardware.
  • For the window’s proper operation the moving parts (the hardware) must be lubricated with oil (acid-free) at least twice a year. Never lubricate:
    • the bearings sliding the hardware;
    • the scissors and the backs of the double plane opening hardware.
  • Do not suspend anything (except blinds with target weight) on the window’s wing - this may lead to difficult closing, drooping and other problems.

NOTE: The window should be cleaned regularly

  • The normally soiled frame and wing can be cleaned easily with warm water in which dish washing detergent was added.
  • The window cleaning is done with warm water and a suitable soft cloth as for more stubborn stains suitable detergent can be added.
  • Rust stains - these stains can occur as a result of metal contaminants from the air (see Installation).
  • Very dirty windows can be effortlessly cleaned with special cleaners. Such cleaners you can find with us.


  • Do not use abrasive cleaning materials!
  • Do not use aggressive detergents containing solvents, acetone and others.
  • Do not use hard and/ or sharp objects (knife, razor blades, scrubbing wire or wire brushes, etc.)!
  • Do not dry clean with a dust towel!
  • The frame and wing sealing also need to be cleaned of dust and other contaminants. Given that the sealing goes out of its groove, it is enough to press it with your thumb, starting from where the sealing is “lying”.
  • Do not use sharp and/ or cutting objects – you can hurt the sealing as a result of which further complication will occur (blowing).
  • Glass is best cleaned with warm water and a clean cloth and specialized detergents commercially available. When needed, you can add to the water washing dishes detergent.
  • Avoid the use of erodent or solvent containing products!

Sometimes, at a given angle of light refraction it is possible to see iridescent stains. This is a physical phenomenon but not a defect and/ or grounds for complanet. Sometimes, depending on the altitude of the object where windows were installed, bulging or sunken of the glazing may appear, the so-called Diaphragm Effect – the glazing is solid, closed against air structure and therefore it reacts as diaphragm. The changes in temperature and external (atmospheric) pressure cause a change in the volume of the glass. The glass sheets respond accordingly to the external conditions, as a result of which the image of the reflection of the glass is deformed. It is allowable defect that can not be avoided and can not be subject of claim. This distortion can be minimized if the glazing is installed at an altitude of approximately the same as the place where they were made. This effect is reduced with time.

  • Under certain climatic conditions the glass and the frame can “sweat” - this is the result of warm and cold air “meeting”. The phenomenon occurs most often when high humidity and low ambient temperatures combine.
  • A prerequisite for maximum prevention of this phenomenon is proper ventilation!
  • Claim for condensation is accepted only if the sweating is inside the glazing.
  • To avoid condensation we recommend the glazing from MILKANA ENERGY Series
  • There are additional systems that provide controlled ventilation, so as to avoid the condensation forming. See HOW TO AVOID CONDENSATION.
  • Once a year, all the moving parts of the hardware must be lubricated with oil or free resins and acids grease.
  • Only a specialist from the company that supplied the window can determine and respectively eliminate the problem!
  • The jamming of the hardware components will show you the lubrication time!
  • When opening the window is difficult - contact the vendor of your windows.


Do not place wooden blocks or other objects to prevent the “slam” of the window when there is a draught. This way you can only incur damage or malfunction of the product!


Opening the window:
  • Windows with double plane opening: opening the window at one side (along the hinge axis) is the same as for one plane opening. To open the window at the top to the lower edge is necessary to rotate the handle up (180°) and then gently pull the wing to you to the desired position.
  • Windows with one plane opening: to open window it is necessary to rotate the handle to the side (90°) and then pull the wing toward you to the desired position.


Do not rotate the handle to open the window from the top when it’s side open. This leads to releasing the top hinge and it’s possible the wing to fall! When opening the window at the top, it is always necessary to make sure that the bottom edge of the window is tightly pressed to the frame!

Closing the window:

To close the window from open position it is necessary to close the wing tightly till its close pressing to the frame and then turn the handle to position “down”.

Dangerous situations

In a side opened window (eg ventilation) it is possible to get air flow, causing unwanted closing of the window. In this case it is possible, if you are in the closing area, the wing to hit you, pinch you or to break and thus pieces of glass to cut you.


When there are strong winds or the possibility to occur air flow, please close the window. If the draught is caused intentionally, make sure to lock their open position.


There is a risk of falling through the window!
Keep children away from the window when it’s open!


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Regular member of Bulgarian Doors and Windows Association

Сдружение български врати, прозорци и фасади

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