ABB VersaRupter Installation, Operation And Maintanance Manual - page 38
VersaRupter MV Indoor Switch | Installation and Operation Manual
38
Installing the Chain Drive Handle
Refer to the drawing for “Chain Drive Assembly”.
1. Secure the sprocket to the operating shaft of the
mechanism and secure it with the setscrew.
2. Bolt the chain drive housing to the switchgear enclo-
sure using 4 3/8”-16 X 3/4” hex head bolts and 3/8”
lock washers. If installing on the right hand side, in-
stall the angle bracket from the chain guard along
with bolting on the chain drive housing. Reference
drawing “Chain Drive Assembly” for details.
3. Ensure that the switch is closed and the handle is in
the up position.
4. Bolt the angle from the chain guard to the angle
bracket. Slide the angle assembly onto the sprocket
and bolt it to the angle that was previously installed.
The angle is slotted to allow for depth adjustment.
The chain guard assembly is not required if chain drive
is installed on the left hand side.
5. Install the chain onto the sprockets securing them with
the turnbuckles and chain guard. If the switch is
mounted upright, the chain must be crossed as shown
in the referenced drawing. If the switch is inverted,
the chain does not need to be crossed. Ensure that
the turnbuckles are not closer than 6” to either
sprocket while the switch is in the closed position with
the handle up. Do not exceed a 1” misalignment with-
in sprocket to sprocket plane.
6. Adjust the chain between the switch and handle until
the top and bottom of the chain is snug. Open and
close the switch 10 times using the handle and make
final adjustments to the turnbuckles. If properly ad-
justed, the handle should be approximately 3/4” to
7/8” from the handle stop in either position when the
switch trips.