Adjusting a uPVC window lock primarily involves tweaking the locking mechanism to improve the window's seal and security. Here's how you can typically do it:
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Locate the Adjustment Head: Open the window and find the adjustment head (also known as a cam or roller). These are usually located on the window frame, near the locking points.
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Identify the Adjustment Mechanism: Most uPVC window locks are adjusted using an Allen key (hex key). The size may vary, so you might need to try different sizes to find the correct fit.
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Adjust the Pressure:
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To Increase Pressure (Improve Seal): Insert the Allen key into the adjustment head and turn it clockwise. This moves the lock backwards and increases the pressure against the window frame when locked, improving the seal and potentially reducing drafts.
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To Decrease Pressure (Loosen Lock): Turn the Allen key anti-clockwise. This relaxes the pressure and makes the window easier to lock and unlock.
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Test and Fine-Tune: After each adjustment, close the window and check how easily it locks and unlocks. Also, check the seal around the window frame for any gaps or drafts. You might need to make small adjustments multiple times to achieve the optimal balance between ease of use and a secure seal.
Important Considerations:
- Over-tightening: Avoid over-tightening the lock, as this can damage the mechanism or make the window difficult to close.
- Locking Point Adjustment: Some uPVC windows have multiple locking points. Adjust each one individually to ensure even pressure distribution.
- Professional Help: If you are unsure about any part of the adjustment process or if you are experiencing significant difficulties, it is best to consult a professional window fitter or locksmith.
