TRU-THERM
™
INSTALLATION & OWNERS MANUAL
18
•
Mount CD150 Cable Drum brackets and shaft support brackets (if required) to
wall. The shaft support bracket is mounted above the centre of the doorway, or
to suit available strong timber fixing. (Remember to allow 120-170mm for the
springs to grow when tensioning.)
•
Fit torsion spring assemblies, spring bearings, cable drums, shaft bearing
assemblies and the torsion coupling to the torsion shaft. Ensure the locking ring
spacer is fitted between the cable drum and outer shaft bearing assembly on the
CD150 bracket.
•
Fit the bent key steel for the cable drum and torsion coupling and then tighten
the grub screws into the shaft and key steel only. IMPORTANT! Fit the hose
clamp supplied around each key steel and use the thread locker supplied on the
torsion coupling grub screws. (The torsion coupling connecting bolts will be
tightened in Step 9.)
•
Now bolt the spring assemblies to the Spring Anchor brackets which are bolted to
the cable drum brackets already on the wall. See Figure R below (NB: Standard
lift door shown).
•
Now check that the shaft is straight and level.
Cable drum
Bracket
FIGURE R
