Southern States EC-2V, Installation Instructions Manual

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Page 18 of 22
Installation & Adjustment Procedures
4.1. Before making any adjustments always check that none of the pinned joints have
slipped. If slippage occurs, correct it and repeat the operation to verify that adjustment
is really needed.
4.2. Open the disconnect switch with the operator. The switch is in the fully open position
when both blades are approximately 90 o to the switch base.
4.3. If the switch does not fully open before the operator reaches the fully open position, the
adjustable arm radius is too short. Close the switch, match-mark the adjustable arm
and the pipe clevis, and loosen the bolts on the adjustable arm and pipe clevis.
Lengthen the adjustable radius arm approximately 1/4”. Allow the pipe clevis to
reposition itself the same 1/4”. Refer to Figure 16 . Test operation and readjust as
necessary.
Figure 16: Adjustable Arm Assembly
4.4. If the switch is fully open before the operator reaches the fully open position, the
adjustable arm radius is too long. Close the switch, match-mark the adjustable arm and
the pipe clevis, and loosen the bolts on the adjustable arm and pipe clevis. Shorten
the adjustable radius arm approximately 1/4”. Allow the pipe clevis to reposition
itself the same 1/4” . Refer to Figure 16 . Test operation and readjust as necessary.
4.5. If the switch has too much toggle in either open or closed position, loosen the pipe clevis
and adjust to allow for an equal toggle amount in both positions.
4.6. All poles of the fully adjusted disconnect switch should operate together, although a
slight variance between poles is acceptable. The primary objective is for all poles to
fully open and fully close. Minor adjustments of the inter-phase pipe clevises may be
necessary for pole coordination.
4.7. Setting Toggle:
4.7.1. Toggle is obtained when the switch is in the either fully open or fully closed position
and the connection point between the adjustable arm and pipe clevis has gone past
the centerline of the vertical operating pipe. The operating linkage will almost seem
to snap past this point.
4.7.2. If possible the switch should go into toggle in both the open and closed positions.
This is not always possible, it is most important that the switch goes into toggle in
Loosen Bolts
for Adjustment