If you experience any problems with the operation of your door firstly check the frame and door
installation as shown in steps 1 to 14 and ensure all installation steps have been followed correctly.
PROBLEM SOLVING
Problem
The door sticks out from the frame at the bottom.
Solution 1
Ensure roller spindles can move freely in the ‘C’ tracks. If necessary, reposition ‘C’
track front brackets. See step 4.
Solution 2
Ensure there is a 3mm gap between the top weatherstrip guide and the pivot
block. See step 6.
Solution 3
Release the spring tension and straighten the frame leg. Fasten the frame to the
wall above the jamb bracket and below the spring anchor bracket and secure the
base to the floor using a suitable bracket.
Problem
The door ‘kicks across’ to one side when open.
Solution
Ensure the ‘C’ tracks are parallel. Measure diagonally from corner to corner. The
distance should be equal. Re-position if necessary. See step 5.
Problem
The handle is stiff to turn.
Solution
Apply a drop of lubricating oil to the handle bush - see step 12.
The door must be dismantled with care. Always ensure that the structure is well supported during
dismantling and that parts are not allowed to fall or pivot in an uncontrolled manner.
Start from inside the garage and ensure that all necessary lighting, tools and personnel are available.
The door should be opened and propped securely in the opening. The door springs can be carefully
removed by disengaging from the adjustment strap (see note 10 for reference). The springs,
adjustment straps and hooks can now be detached from the door. The door leaf should now be
carefully moved to the closed position and the door and frame should be secured with supports.
The gear arms can now be detached from the frame - taking care to lower the arms to the floor after
removal of the fixing screws (see note 7 for reference)
Release the ‘C’ tracks from the ceiling supports and lower towards the front of the door. Remove the
ceiling track supports (see note 5 for reference)
Detatch the ‘C’ track front brackets from the frame taking care to support the ‘C’ tracks which will
then detach from the opening (see note 4 for reference)
Remove the spring anchor bracket and strike plates by removing the local fasteners (see note 8 for
reference). Remove the pivot blocks (see note 6 for reference)
Remove the top slam latch keeps to release the engagement of the slam latch (see note 11 for
reference).
The door can now be carefully handled; the prop supports removed and the door will release from
the opening. Ensure that hands will not come into contact with any sharp edges and wear gloves if
necessary. Always take care when handling heavy items.
Carefully remove the lower weatherstrips and tacks ensuring that they are not left in the vicinity where
they can be trodden or driven upon.
Dispose of all unwanted parts in accordance with best practices and legislation.
Ensure that the pivot block and middle weatherstrip are correctly positioned. Carefully mark through
the plastic weatherstrip to position the pilot holes for the jamb bracket. Pilot drill, avoiding damage to
the weatherstrip, and secure the jamb brackets and gear arms using the 38mm x 8mm screws
A
.
Utilizing the pilot holes provided in the door, attach both bottom door brackets, using the holes
furthest from the edge of the bracket with 38mm x 8mm screws
A
. Locate the door arms into the
bottom door brackets and secure using safety fasteners
H
, fully tighten bottom door brackets
For Doors 2101 mm high and above.
Butt the bottom weatherstrip against the middle weatherstrip. Align and flatten the bottom weatherstrip
against the frame leg and secure using one or more tacks
T
. Use the lower holes as templates to pilot
drill five holes 4.5 mm diameter in the frame. Position the spring anchor bracket over the weatherstrip
and secure using 2 off 38mm x 8mm self tapping screws
A
. If the weatherstrip is excessively long the
excess may be removed using scissors. The strike plate should be positioned on top of the weatherstrip
to align with the three holes and fastened with 3 off 38mm x 6.3mm self tapping screws
B.
For Doors 2100 mm high and below.
Here a longer strike plate is used and the spring anchor bracket is secured on top. Align and flatten
the bottom weatherstrip against the frame leg and secure using one or more tacks
T
. If the
weatherstrip is excessively long the excess may be removed using scissors. Use the lower holes as
templates to pilot drill two holes 4.5mm diameter in the frame. Position the strike plate over the
weatherstrip and locate the spring anchor bracket provided onto the strike plate. Secure using 2 off
38mm x 8mm self tapping screws
A
.
Ensure that the weaterstrips have been positioned correctly and that they lie flat against the frame
legs. Using tacks
T
secure the unsupported of the section of the weatherstrips to the frame leg. The
tacks should be hammered into position carefully.
Remove the items being used to temporarily
secure the door in position. Grip the door
and simultaneously release the catches by
pulling the lock arms. Slowly and carefully
open the door and carefully locate a prop to
hold the door safely while the springs are
fitted.
Locate the spring carrier onto the hook on
the spring anchor bracket, ensuring that the
hook has located properly as shown.
Using a suitable lever, carefully lift the top
part of the spring assembly and locate the
hook into one of the slotted holes on the
adjusting strap as shown. Ensure that the
same slotted hole is used on both sides of the
door.
Support the leading edge of the door leaf
and carefully remove the door leaf support
prop. Guide the door towards the closed
position until the tension of the springs
supports the door. Ideally the door will be
well balanced and should find a natural ‘at
rest’ position at about 2/3 of the way down.
If necessary re-support the door leaf and
adjust the spring tension as necessary (move
up the slotted plate to increase the spring
force and down the slotted plate to reduce
the spring force).
Position the slam latch keep to correctly engage
over the slam latch. A 2mm clearance should be
provided between the adjacent faces of the slam
latch keep and the slam latch bracket to allow free
movement of the door leaf at opening. Pilot drill as
recommended and secure the slam latch keep in
position using two 32mm x 8 gauge posidrive
screws
I
. Fit the second keep.
The bottom slam latches locate against the lower
metal strike plate and do not require slam latch
keeps to be fitted.
With the lock supported on the inside,
push the handle bush into position from
outside and fit the fascia by inserting
the fixing lugs into the holes until they
‘snap-in’. Remove the screw and
washer from the outer handle and pass
the handle through the lock as shown.
Fit one of the inner handles and secure
using the screw and washer just
removed. Check the operation of the
handle and lock mechanisms.
The second inner handle should now
be attached with the rope below the
lock body, on the door bracing. Thread
the rope through the hole provided and
knot securely to make a ‘rope pull’.
Note: The fascia is not supplied for the
Merlin, Doric, Durham and Victoria
steel doors and is supplied pre-fitted
to timber doors.
When the installation is complete, apply a small amount of oil to the pivot points.
When installing into a timber frame of the recommended size, fit a 25mm x 25mm weather beading
to the outside of the frame head as shown.
SECURE THE GEAR ARM JAMB BRACKET TO THE FRAME
7
FIT THE SPRING ANCHOR BRACKETS & STRIKE PLATES
8
SECURE THE BOTTOM WEATHERSTRIPS
9
DISMANTLING
15
TROUBLESHOOTING
14
FIT THE LOCK
12
COMPLETING THE INSTALLATION
13
FIT THE DOOR SPRINGS
10
FIT THE TOP SLAM LATCH KEEPS
11
P C Henderson Limited Durham Road, Bowburn, County Durham DH6 5NG
Telephone: 0191 377 1441 Fax: 0191 377 2972
Part No. 002440 Issue No. 04 January 2004
Outer handle
Handle bush
Inner handle
Fascia
Middle
weatherstrip
Bottom door
bracket
Safety
fastener
Door arm
assembly
Jamb bracket
Jamb bracket
Lower
weatherstrip
Door chassis
Frame leg
(right hand side shown)
Spring anchor
bracket
Middle
weatherstrip
Bottom
weatherstrip
Jamb bracket
Adjusting
strap
Spring anchor
bracket
Spring carrier
Upper spring
assembly
Slam-latch
bracket
Slam-latch keep
Frame head
Weatherbeading
Door
