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Technical support and user guide information

Technical Support
What types of door handle are there?

There are three popular types of door handle. Refer to our website or catalogue for the full range of brands, designs and colour options.

 

Lever / Lever

Levers on the inside and outside of the door.

Ideal for use with a lever operated multipoint door locking mechanism.

 

Lever / Moving Pad

Lever on the inside and a moving pad on the outside of the door.

Moving pads are usually used with split or dual spindle multipoint door locking mechanisms.

 

Lever / Fixed Pad

Lever on the inside and a fixed pad on the outside of the door.

Fixed pads are used with key wind up locks

 

What type of locking points are there for doors?

What is PAS 23 and PAS 24?

Both of these relate to performance, manufacturing and test standards for doors.

 

PAS23

PAS 23 tests performance requirements for door assemblies, to achieve the standard a door set is subjected to a series of tests, which include:

  • Wind and water tightness
  • Cycle testing etc

Every component used within the door set tested, must comply to the relevant British Standard for that component before they can be put forward for testing to PAS 23.

PAS 23 is incorporated under the standard BS EN 14351-1:2006 for windows and doors which covers product standards, performance and characteristics.

 

PAS 24

PAS 24 is an enhanced security performance test for door assembly requirements, like PAS 23 every component used within the door set tested must comply to the relevant British Standard for that component.

PAS 24 covers the same requirements as PAS 23 with additional security tests, such as:

  • Manual intervention
  • Mechanical loading
  • Hard and soft body impact

An example of the intensity of the testing, the mechanical loading tests subjects the door set to 4.5Kn of pressure, the equivalent of approximately 45 times the pressure used to tighten a car wheel nut.

 

What is BS 7412 and BS EN 7950?

 

Both of these relate to performance, manufacturing and test standards for windows.

 

BS 7412

BS 7412 tests performance requirements for window assemblies, to achieve the standard a window set is subjected to a series of tests, which include:

    * Wind and water tightness
    * Cycle testing etc

Every component used within the window set tested, must comply to the relevant British Standard for that component before they can be put forward for testing to BS 7412.

BS 7412 is incorporated under the standard BS EN 14351-1:2006 for windows and doors which covers product standards, performance and characteristics.

 

BS 7950

BS 7950 is an enhanced security performance test for window assembly requirements, like BS 7412 every component used within the window set tested must comply to the relevant British Standard for that component.

BS 7950 covers the same requirements as BS 7412 with additional security tests, such as:

    * Manual intervention
    * Mechanical loading
    * Hard and soft body impact

An example of the aggressive of the testing, the mechanical loading tests subjects the door set to 3Kn of pressure, the equivalent of approximately 30 times the pressure used to tighten a car wheel nut.

What is a Eurogroove?
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Eurogroove

A Eurogroove is an industry standard feature on most PVCu, aluminium and timber door and window profiles, where the locking devices are fitted.

A Eurogroove is the groove in the profile in which multipoint locks and espagnolettes are fitted. This is always 16mm for PVC, but can be 20mm in Timber.

 

How do I measure the PZ centre and Backset on a door lock?
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Centre section of a Multipoint lock illustrating the dimensions

for the Backset and PZ centre

Backset

The backset is the dimension from the front of the faceplate to the centre of the handle spindle or cylinder hole.

The most popular backset sizes are 25mm, 30mm, 35mm and 45mm.

The backset dimension is the distance between A and B on the diagram.

 

PZ Centre

The "PZ" or "Centre" is the distance between the centre of the handle spindle and the centre of the round section of the cylinder. 

The PZ Centre dimension is the dimension between C and D on the diagram.

Multipoint locks can have one or two spindle holes (also known as followers) these type of locks will have two measurements, the most popular being 62mm / 92mm.

Most modern locks with one spindle are 92mm centre, however some older locks may be 70mm or 72mm.

 

How do I change the handing of a FUHR door bolt?

On most FUHR locks, to change the handing you remove the small grub screw on the side of the lock case adjacent to the latch plate with a 2mm allen key.

Remove the latch and turn in it 180º vertically, place it back into the opening and secure the grub screw back in place.

The FUHR 871 and FUHR 881 door locks are supplied handed, this cannot be changed, so please ensure you order the correct handing for the application.

 

How do I adjust FUHR keeps?
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Hook and Keep Alignment

Hook and Keep Alignment:

The hook keep should be aligned using the guideline on the hook plate. Ensure the hook engages correctly avoiding friction on which can result in damage to the hook, there should be a 2mm gap between the line on the hook plate and the flat of the hook as shown in the diagram.

 

 

 

 

 

 

Latch and Hook Adjustment:

Take care not to over adjust the hook keep as this can damage the keep - do not rotate through 360º.
A screwdriver and a 4mm allen key will be required when adjusting these plates.

Latch and Hook Adjustment           

 

Roller and Mushroom Adjustment:

Adjust eccentric compression of roller and mushroom keeps to ensure the optimum compression for the door.
Adjust the compression using a 4mm allen key.

Roller and Mushroom Adjustment