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Figure 34.
Fan Cowl Extensions
Motor Removal System with Davit Arm (Optional)
1. If this option is ordered, two brackets are pre-installed in the factory at each
motor location. See
Figure 33, Detail A
.
2. The davit socket is pre-assembled. A hook plate is supplied on the back of the
davit socket. Place the hook over the bottom flange of the fan deck frame to
hold the weight of the socket while it is being fastened to the unit. See
Detail B
.
3. For each motor location, attach a socket assembly to the two factory installed
brackets using eight 3/8” hardware supplied. See
Detail C
.
4. Place the davit arm into the davit socket. Use the viewing slots in the front of
the socket to ensure the davit arm passes completely through the center plate
and rests on the bottom support base. See
Detail D
(Independent Drive davit
arm shown).
Operating Instructions (See Figures 33a and 33b)
1. For independent drive motors only, swing out the motor base.
2. Loosen and remove the drive belt.
3.
Independent Drive Motor:
Remove the retaining hardware from inside the unit
and swing the motor base out under the davit arm.
Dual Drive Motor:
Remove the motor access panel and adjust the motorbase
using the tensioning screw so the motor is clear of the outside of the unit.
4. Adjust the motorbase and swing the davit arm so the motor is centered below
the eyebolt.
5. Attach the lifting mechanism (supplied by others).
NOTE:
The davit arm on units with
dual drive will have two eyebolts.
Units with independent drive will
have one eyebolt on the davit arm.
Detail A
Detail B
Detail C
Detail D
Figure 33a.
Motor Removal System with Davit Arm
Independent Drive
Figure 33b.
Motor Removal System with Davit Arm
Dual Drive
Viewing
Slots
Hook
Flange
