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P-RAEBER
Electronic Instruments

Who hasn’t done it? In the morning you open the bedroom window, to air the room, and forget to close the window again before you leave home.

It’s not just the bedroom window that is the problem. The same can happen with the window in the bathroom, the WC, the kitchen, and so on. After airing the room, the window is often left open. Even though the heating system wastes a huge amount of energy trying to keep the room warm, you usually come back to a draughty, cold room.

In some houses or flats, rooms are permanently ventilated by means of bottom-hung windows. Even these waste energy – you can count on between two and four kilowatts blowing out of each of these windows every day!

Diagram saving potential

More comfort for less energy.

• This adds up to an energy saving, per window, of 200 to 300 kilowatts per year.  The ‘Winboy’ therefore pays for itself within a very short time.

• The room stays comfortably warm.  There is no danger of wind, rain or frost damaging the room or its contents.

• An open window is an open invitation to any passing burglar.

• The ‘Winboy’ can be attached to the side, the top or the bottom of the window frame by four screws.  It is then attached by a cord to the casement.  (If space is limited, the ‘Winboy’ can even be mounted on the casement itself, and its cord attached to the window frame.)
   
• Before opening the window, the required airing time is set using a control on the body of the ‘Winboy’.
   
• When the window is opened, the cord will be pulled out and, inside the ‘Winboy’, a powerful spring is tensioned.  (The ‘Winboy’ is purely mechanical and requires neither a power supply nor batteries.)
   
• A clockwork mechanism holds the spring under tension, until the set time has been reached.  The spring then slowly closes, retracting the cord and, of course, pulling the window casement closed.  (Note that the ‘Winboy’ mechanism contains a built-in brake, to prevent the window being slammed shut.)
   
• The cord has a length of approximately 85 cm.  If the casement is opened further than this, a safety ring fitted to the end of the cord will open, to prevent the mechanism of the ‘Winboy’ from being damaged.  The cord, with safety ring, can be easily re-attached to the rest of the ‘Winboy’.
   
• If the window-closing function is not required, the cord can be simply detached from the casement and secured to the peg on the ‘Winboy’s housing.

Technical data

Weight..................

Cord length.............

Closing force...........

Airing time:

Material..............

130 g

approx.. 85 cm

5 - 20 N (0.5 - 2 kg)

From 5 to 20 minutes

Plastic POM,
stainless steel

Figure