TRU-THERM
™
INSTALLATION & OWNERS MANUAL
23
Step 13- Top Track Final Adjustment
•
Standard lift and high lift horizontal track hangers and lateral braces, as fitted in
step 7 (figure K and L on page 13) must be adjusted with door in the open
position. Ensure there is even clearance between the track and the door (15
–
20mm).
•
Buffer springs must be fitted to the rear of the horizontal tracks as shown below
in figure V. Ensure the door lifts clear of the opening when against the buffer
springs.
•
Please note: On standard lift doors with jack shaft motors, door must compress
springs by 75mm when fully up, to ensure the spring will get the door moving
correctly when it starts to go down.
FIGURE V
