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TRU-THERM
™
INSTALLATION & OWNERS MANUAL
16
Step 7- Set up Shaft and Springs
•
Identify the appropriate spring configuration for your door shown in Figure P
below and Figure Q on next page.
•
It is very important to ensure RED cable drums are always on the LEFT side of the
door and BLACK cable drums on the RIGHT. (From Inside Looking Out) See Figure
P below.
FIGURE P (Standard Lift door with 2 springs)
Please note: Torsion Shaft must be level and square to wall!
WARNING!
Spring anchor brackets must have extra strong fixing as large forces are applied when springs
are tensioned!