If there is a block phenomenon when opening and closing the door and window, the switch needs a lot of strength, the width of the frame fan is small, and the unevenness of the surrounding gap is generally caused by the following factors:
( 1) The door and window frame or fan is deformed, and the sealing strip is loose.
( 2) Damage to hardware accessories.
( 3) The installation quality is poor, and there are many deviations from the allowable deviation, and it has not been adjusted in time.
Prevention:
( 1) Door and window installation should comply with the installation process, and check and adjust the installation quality of each process at any time.
( 2) The window frame and the window hole should be drawn out of the middle line. When the window frame is installed in the hole, the center line should be aligned, the frame angle should be temporarily fixed, and the verticality, horizontality and straight angle of the window frame should be carefully adjusted. The error should be within the allowable deviation. .
( 3) Check the diagonal and flatness deviation before entering the frame. After entering the frame, check the overlap width and peripheral gap of the frame fan with the steel ruler and the feeler gauge until the requirements are met.
( 4) Correctly install the hardware parts and find that the damage should be replaced in time.
( 5) Do a good job of product protection and normal use and maintenance, to prevent external impact, and not to hang heavy objects, resulting in deformation of doors and windows. Use it to lightly close and extend its service life.
2, hardware accessories damaged
The damage of plastic door and window hardware accessories is generally as follows: the hardware accessories are not firmly fixed, loose and loose, and the pulleys, sliding hinges, etc. are damaged, and the opening and closing is not flexible.
Causes of damage to hardware: improper selection of hardware accessories, poor quality; no metal liners when tightening, not enough installation strength.
Prevention:
( 1) The type, specification and performance of the selected hardware fittings should conform to the current national standards and relevant regulations, and match the selected plastic doors and windows.
( 2) For sliding windows with a width of more than 1 m, or doors and windows with double glazing, double pulleys or rolling pulleys should be used.
( 3) The sliding hinges shall not be made of aluminum alloy and shall be made of stainless steel.
( 4) To install the hardware with the fastening screws, a metal lining must be built in. The thickness of the lining should be at least twice the distance of the fastener. Do not fasten to plastic profiles or use non-metallic linings.
( 5) The hardware accessories should be installed last time. Door and window locks, handles, etc. should be assembled after the window door fan is inserted into the frame to ensure correct position and flexible switch.
( 6) After the hardware is installed, pay attention to maintenance to prevent rust and corrosion. In daily use, it is necessary to lightly open and close the door to prevent hard opening and damage.
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