Aluminum windows have a long time difficult to switch how to do
1, if it is a flat window, with the oil point of the sash of the hinge of the axis, back and forth switch several times on the line;
Remove the cleaning inside the dirt, available alcohol, detergent and other cleaning, dry and then installed
Is flat or open the sliding window can be a little bit of oil on the hinge there is support if the push and pull you can point the soap to the track do not point the oil on the bearing is not easy to damage the track
2, if it is sliding windows, you need to check the pulley. Hands clinging to the sash, put on the same side to push the lower end, the sash will be unloaded (must pay attention: the syllabus has weight, do not sell). Turn over, the lower part of the fan up, you will see the bottom of the two ends have a pulley. Toggle to see if there is any damage to the rubber tire. Click on the oil, whether it will become faster. If not, it is damaged, need to be replaced. At this time, you need to participate in the master of the workers, you can not solve the problem.
