Harrington Hoists and Cranes SMR Trolley User Manual
Page 20
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Power Supply Cable Hoist Connection – The Power Supply Cable connects directly to the trolley's
Switch Box using Cable Holder Assembly. Make this connection as follows:
1)
Refer to
Figure 3-14
2)
With 1 inch of the outer cable insulation extending beyond the cable packing, insert the cable into
the switch box and screw together Cable Holder A and B.
3)
Refer to
Figure 3-14
and connect the black and white wires to terminals 1 and 2 on the terminal
strip inside the Switch Box. Connect the ground wire (green with yellow stripe or solid green) to the
ground terminal next to the terminal strip.
4)
Install the Cable Support Assembly (pre-installed on the Power Supply Cable) onto the Cable
Support Arm Assembly as shown in
Figure 3-16
.
5)
Use care to avoid twisting or kinking the Power Supply Cable.
Trolley to Hoist Connections – The trolley connects to the hoist via short cables that are factory
installed into the trolley Switch Box. The Cables are hard wired into the hoist, but can be fitted with plug
assemblies that match sockets in the hoist bodies. Make these connections as follows:
Make the hard wire connection as follows:
1)
Refer to
Figure 3-15.
2)
Insert the power supply and pendant cords in to the socket holder then fasten the square cable
holder mounting plates to the socket holder.
3)
For the 3-conductor cord,
connect the black and white wires to terminals 10D and 9C on the
terminal strip inside the hoist body. Connect the ground wire (green with yellow stripe or solid
green) to the ground terminal next to the terminal strip.
4)
For the 4-conductor cord, connect the black, red, white, and brown wires to terminals 2-14,
12F, 11E, and 1-13 on the terminal strip inside the hoist body.
5)
Use care to avoid twisting or kinking the Trolley to Hoist Cables.
Power Supply Cable Festooning – The SMR trolley is standardly supplied with Cable Hangers for the
Power Supply Cable. Make this connection as follows:
1)
Refer to
Figure 3-16
.
2)
Install the Cable Hangers onto the Power Supply Cable spacing them every 5 feet.
3)
Install a Guide Wire system parallel to the beam. Pass the Guide Wire through the Cable Hangers
and Wire Guide.
4)
Make sure the Guide Wire is properly tensioned and the Power Supply Cable is not twisted or
kinked.
3.4.6
Connection to Electrical Power Source - The black and white wires of the Power Supply Cable should
be connected to an Electric Power Disconnect Switch or Circuit Breaker. This connection should be
made so that the, SNER or other hoist is phased properly. Refer to
Section 3.5.5
for instructions on
how to check for correct power supply phase connection.
3.4.7
Fuse/Breaker Capacity -The power supply for the trolley and hoist should be equipped with overcurrent
protection such as fuses, which should be selected for 110% to 120% of total listed full load amperage,
and should be dual element time-delay fuses. Refer to the motor nameplates on the trolley and hoist
for the full load amperage draw of each and added the two values together for the total amperage.