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FITTING HAWGOOD 4241

Products -> spring hinges -> HAWGOOD type 4241 -> fitting

Drill two 38 mm. diameter holes 9 cm. deep into the door frame approximately 12 cm. from the top and the bottom. Place the spring hinge into the hole and ensure, that there is clearance around the plastic tubes. Then, using the mounting plate as a template, mark the fixing holes and the shape of the outer edge of the mounting plate. Remove the spring hinge, drill the fixing holes and sink the mounting plate into the doorframe (approximately 4 mm.) so that the hinge mounting plate is flush with the doorframe. Fit the spring hinge using the screws provided. It is important, that the spring hinges are fitted square to the door frame and that the mounting plate is flush.

Using a suitable wedge placed under the door to give the required clearance top and bottom of the door, offer the door up to the spring hinges and mark the places where the hinges will be fixed to the door. Each rectangle where the spring hinge is placed is 48 x 29 mm. Then remove the required amount of material from the door to obtain a good fit into the throat of the spring hinge. Once a good fit has been obtained all round the door, the holes for the spring hinges can be drilled and the fixing screws fitted.

WARNING :

Please ensure all drilled holes (used for securing the body of the spring hinge) in the door are exactly in line with the centre of the holes in the spring hinge itself. If aligned incorrectly, the countersunk heads of the screws may push the spring hinge slightly up or down, resulting in the cam face on the body to jam during operation. If necessary, door stops should be fitted to ensure the door opening is restricted to 95 degrees.
 



In above mentioned formula is 'K' the force, of which the door pulls at the upper hinge.
 
Based on spring characteristics and experience with these hinges we advise you as in the following table:
K I II III
8 1 x 41   1 x 41
8-16 1 x 42   1 x 41
16-20 1 x 42   1 x 42
20-30 1 x 42   1 x 42
  1 x 41   1 x 42
30-50 2 x 42 ev.1x41 1 x 42
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