Check that the closing spring is fully charged
with the close roller resting against the close
latch.
CAUTION
2. Insert the close spring blocking pin
(Figure 5, b) by carefully removing it from
its storage hole, rotating the interlock lever
and inserting it in the blocking hole.
If the manual close button is not pressed prior
to performing step 3, the ground and test
device will be damaged.
CAUTION
3. Press the manual close button to partially
discharge the closing spring against the
blocking pin.
4. Pull the slow close pin on the flywheel
(Figure 6, b) and resume ratchet wrench
operation of the manual wind shaft. After
several rotations at no apparent load, the
winding mechanism will engage the slow
close pawl and begin the closing operation
of the mechanism.
Continue rotating the manual wind shaft.
Be sure the close toggle pin (Figure 2, #51)
goes over-center and the spacers on the
ends of the pin rest against the frame. After
the one-half flywheel rotation necessary for
closing, the slow close pawl is automatically
disengaged.
Figure 5
Closing Spring Gag Lock
a
b
c
d
e
a. Close Spring Interlock Lever
b. Close Spring Blocking Pin
c. Storage Hole
d. Blocking Hole (under lever)
e. Interlock Lever Return Spring
The ground and test device may be opened
from this position by pushing the manual
trip push button.
To return the ground and test device to
the open and discharge condition, charge
the closing spring as described in
remove the close spring blocking pin and
push the manual close push button and
then the manual trip push button.
Figure 6
Slow Close Pin on Flywheel
a
b
a. Flywheel
b. Slow Close Pin
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16
Mechanical Checks and Adjustments
Power/Vac® Electrical Ground and Test Devices
Equipped with ML-17 Mechansim
01.4IB.50100
