Electrical Connections - Harrington Hoists RHN02D-20A-20D Series Owner's Manual

3.5

Electrical Connections

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3.5.1
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3.5.2
lifting or traversing motors. Use of such devices may cause the motor brake and other electrical
components to malfunction. For variable frequency drives contact Harrington for more information.
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3.5.3
de-energized (disconnected). Lock out and tag out in accordance with ANSI Z244.1 "Personnel
Protection -Lockout/Tagout of Energy Sources".
3.5.4 Installing Power Supply Cord
1) Refer to
2) Remove Control Cover.
3) Loosen the cable fitting located on the lower side of the electrical enclosure and insert the Power
Supply Cable. Pull through enough cable to reach the power supply terminal and securely tighten
the cable fitting.
4) Connect the 3 phase power leads (L1, L2 and L3) and the ground lead of the Power Supply Cable
to the power supply terminal. Make sure the terminals are securely tightened and each lead is
completely isolated.
5) Replace the Control Cover. Be careful to not damage the seal or sealing surfaces and make sure to
securely tighten all fasteners or latches.
Figure 3-12
Ensure that the voltage of the electric power supply is proper for the trolley hoist.
Do NOT apply electronic soft-start control or voltage varying controls to the RHN
Before proceeding, ensure that the electrical supply for the hoist or trolley has been
Figure 3-12, Figure 3-13 and the wiring diagram provided with the Hoist.
Figure 3-13
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