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FAQ
How do I change power supply voltage on my hoist?
My actual voltage differs from the voltage rating of my hoist. Is that a problem?
May I use my ER Series hoist outside?
How do I change power supply voltage on my hoist?
Answer:
The ER/NER Series three phase hoists are 208/230/460 volt compatible. This means that with the proper wiring configuration, these hoists may be operated at any of these three voltages. Unless another voltage is specified by the customer, standard units shipped from the factory will be configured for 460 volt operation. To reconfigure this hoist for low voltage operation, it is necessary to change both transformer and motor leads. WARNING: Failure to reconfigure both components, or incorrectly wiring either of these components will result in electrical failure of the hoist. If a motorized trolley is included, motor leads for the trolley must also be changed accordingly.
Wiring schematics for these hoists are located on the inside of the hoist controller cover assembly. Transformer leads are located on the front side of the control panel. Motor leads are located on the back side of the control panel. The control panel is hinged. To gain access to the motor leads, loosen the three or four captive screws (depending on model size) and swing the panel open.
Harrington wiring diagram number 61100 reflects wiring configuration for a standard single speed hoist. Wiring diagram 61101 reflects wiring configuration for a standard dual speed hoist, and will include nine additional motor leads for the second speed. A unit that is configured for the low voltage option may be operated at either 208 volts or 230 volts, three phase. Be sure to recheck all wiring connections for correctness and be sure all connections are secure before applying power.
Note: Due to the various speed options available for the ER/NER Series hoists, units will have either a two gear or three gear configuration. Please note that there will be a phasing change on the wiring for the three gear unit to compensate for opposite rotation of the gears.
My actual voltage differs from the voltage rating of my hoist. Is that a problem?
Answer:
Most Harrington product is designed to safely operate at +/- 10% of its rated voltage. An ER/NER Series hoist that is properly configured for 460 volt operation can safely operate between 414 and 506 volts. However, the further the hoist is operated away from its data plate rating, the more heat is generated. Over an extended period of time, this excessive heat may result in premature failure of electrical components. Operating the hoist outside of the recommended voltage range can result in more immediate failure of the hoist. Always try to operate electrical equipment as close as possible to the data plate rating. Many times plant voltage supplies can be adjusted to compensate for high voltage or excessive voltage drops.
May I use my ER Series hoist outside?
Answer:
The ER/NER/SNER Series hoist meets IP55 standards, and as such, is water and dust resistant. It is also designed for operation in temperature ranges of -4 to +104 degrees Fahrenheit at humidity levels of 85% of less. These hoists may be operated outside without any detrimental effects. When not in use, however, the hoist should be protected from the elements like any high quality piece of equipment, It is strongly recommended that the hoist be sheltered from outside weather when not in use.
