3 Bar Bottom rail
To alter the cord tension first unclip the head rail.
Before clipping the blind in place replace the plastic capping and endcap that was removed to perform the adjustments.
Remove one endcap from the head rail and slide out the plastic capping to reveal the springs. It is advisable to mark the cord
at the knot to show where the original setting was in relation to the spring. Undo the knot and to increase tension pull the
mark closer to the spring, to decrease tension allow the mark to move away from the spring. Once re-tensioning has been
completed ensure the knots cannot slip.
Check the spring tension of the cords by running the blind up and down. The higher the spring tension the more friction
created and the firmer the moving rail. Too loose and the moving rail will fall under its own weight, too tight and it will not
move.
If you need to adjust the tension you will need to adjust both the cords and the guide wires.
Finally align the head rail with its opposite fixings and clip into position, if the fabric appears to be pinching at one side and
fanning at the other you may need to unclip and re-align the head rail or bottom rail/fixing blocks and then re-check the guide
wire tension. If at this stage the guide wire tension is inadequate then unclip the head rail (if necessary) and repeat the above
Adjusting the Blind Tension
To alter the guide wire tension on a 3 bar blind use the quick tension system on the bottom rail. Do this with the red handle
provided in the spares kit. The red handle is placed over the bottom rail, clipping onto the quick tension unit, slide this handle
to increase/decrease tension on the guide wire. Where possible leave this action until the blind is in its fixing clips so that you
may put tension onto the guide wires without making it difficult to mount. The guide wires are to be as tight as possible to stop
any unwanted movement in the blind.
Check the tension of the blind once more by offering up the head rail to its brackets and re-checking the tension, if necessary
repeat the above process.
Trim over-length guide wire ends (around 75mm [3"] to allow for further re-tensioning if needed) and tuck tails into the head
rail. Excess cord/guide wire at fixing blocks can now be trimmed.
To alter the guide wire tension on a 2 bar blind, remove one endcap from the head rail and slide out the capping strip. Identify
the spring(s) requiring retensioning. Loosen the 2mm grub screw in the barrel clamp next to the spring and pull the loose end
of the guide wire to increase the tension, while under load tighten the grub screw. Now offer the blind to its head rail clips, if
necessary repeat the above process. Replace capping and endcap once the correct tension has been set.
Clipping into Position A
Clipping into Position B
Head rail - Removal
Bottom rail - Removal
Fixing Block - Removal
©
Dometic UK Blind Systems Ltd
General Points
Shaped Blinds – Ensure that there is sufficient space between the edges of the blind and the recess, so that the fabric does
not foul on the recess at any time.
Any puckering of the blind means the blind has not been set up as per the original dimensions given – check the head rail is
in the correct alignment in relation to the bottom rail/fixing blocks. Alternatively the initial measurements were incorrect.
Ensure the fabric is kept clean at all times and take care not to crush the pleats
Dometic UK Blind Systems Ltd
Chichester PO20 0AY England
t: +44 (0)1243 606909 f: +44 (0)1243 608300 www.
dometic.com
e:
CRN 109, Issue 3, May 2009
