The structural opening and bedding of any access cover must be sufficiently strong.

A frame that is not properly supported may distort under load and this in turn may cause seal failure which results in the cover becoming unstable.

Pre-delivery checks
Before despatch, all units are inspected for alignment and dimensional accuracy and all handles and stays are checked. It is important that no component is modified without consultation with Steelway Brickhouse.

Locking screws
All locking screws should be cleaned and lightly greased.

We accept no responsibility for the fluid or gas tightness of any cover not specifically designed to be so.

Filling of recessed covers
It is important to always fill covers in their frames (ensuring that the frames do not distort). Please note recessed covers rely on the appropriate grade of concrete infill to achieve the designated level of performance. Avoid spillage of concrete into key slots, bolt housings and the edge gap between cover and frame.

Sealing
Once the infill has hardened, the covers should be removed and the seating and seals cleaned. If the seals require filling with grease etc., it should be done at this stage, before traffic is permitted.

Single-leaf covers
1. Place cover within its frame and hand-tighten any locking screws.

2. Position assembled cover and frame centrally over chamber and mark for drilling of anchor bolts (where applicable).

3. Set frame to required level with packing, adjusting with securing bolts untightened.

4. Check level, adjusting packing as necessary.

5. If grout or bedding compound is specified, apply under entire frame.

6.When grout or bedding compound is fully hardened, ensure that covers lift out of frame.

7. Ensure that locking bolt holes, key slots and seals are fully protected when screeding or concreting (particularly with recessed covers).

Twin/triple-leaf covers
In instances where a removable sealing support bar is supplied in single or double seal units please ensure that the component is kept in place at all times to effect the seal (with sealing compound or grease where appropriate).

Multiple-leaf covers
Multiple leaf assemblies can be supplied with removable beams and end-support brackets. If seals are specified, a removable sealing support bar (which should be bedded in an appropriate grease or compound to ensure effective sealing), would be supplied.

Continuous ducting
1. All individual components are permanently marked with identification numbers.

2. The complete system should be laid out, where applicable, as shown in the construction drawing, with component numbers corresponding to the drawing layout. Hand-tighten all locking screws (if specified) with any sealing bars in position.

3. Position frame centrally over duct, removing and replacing covers one at a time only when necessary, using spacer clips where applicable.

4. BEFORE fixing any section of frames permanently, check alignment of complete system when laid out.

5. Position frame and mark drilling holes for anchor bolts, where applicable.

6. Set frame to required level with packing, adjusting with securing bolts untightened (where applicable).

7. Check level, adjusting packing as necessary.

8. If grout or bedding compound is specified, apply under entire frame. Position spacer clips provided (where applicable), to maintain cover and frame clearance at 2mm.

9. Tighten anchor bolts, checking height and level, ensuring not to overtighten bolts as this could result in distortion of frame.

10. All frame joints should be set to the same horizontal and vertical alignment and when covers are in place, all surfaces should be flush.

11. When grout or bedding compound is fully hardened, ensure that covers lift out of frame, before screeding or concreting. Unfilled, recessed covers should always be filled in position within the frame.

12. Ensure that locking bolt holes, key slots and seals are fully protected when screeding or concreting, particularly with recessed covers.

13. To ensure perfect alignment, it is advisable, whenever practicable, to leave spacer clips in position during screeding around frames.

These guidelines are for standard products only. Please refer to technical services for installation instructions for Guardsman™, Defender, Sentry and Prolift.

Steelway Brickhouse can also provide a product installation service within the U.K.

Please contact our customer service department on:

Tel : 0121 521 4524 / 0121 521 4525