Power Supply; Low Voltage Operation; Power Cords; Thermal Overload - Sky Climber LNX 65X Manuel Utilisateur

WARNING: Before descending, be sure that the Emergency Handwheel is
removed from hoist, otherwise, serious injury or death could result.

Power supply

Check technical specifications for minimum power requirements, elsewhere in this manual
CAUTION: The motor may overheat if the measured voltage at the motor during operation is less
than 90% or more than 110% of the voltages shown on the motor data plate.
On exceptionally long drops, locate the power source in the middle of the drop, thereby reducing
the amount of power cord required.

Low voltage operation

If a problem in motor performance exists when operating two hoists due to low voltage, the use of a
booster transformer or of a separate power cord for each hoist is recommended.

Power cords

Because of varying platform load, source voltage and electrical system impedance, it is impossible
to recommend optimum electric cord wire sizes, but Sky Climber recommended supply cable will
be satisfactory in nearly all cases. Extremely long drops may necessitate the use of a voltage
booster transformer or location of the power source in the middle of the drop, thereby reducing the
required power cord length.
IF A BOOSTER TRANSFORMER IS NEEDED, CALL YOUR SKY CLIMBER REPRESENTATIVE.
The power cord must be secured to the platform by strain relief devices or other means to prevent
the connector from pulling apart. When two power cords are used in series, include strain relief
devices.
Make sure the power cord length is sufficient to permit free travel of the platform without applying
undue strain to the cord strain relief. It may be necessary to connect to building power midway
between upper and lower travel limits to ensure full travel of the platform and to avoid limitation of
travel due to insufficient power cord or voltage drop.
When finished for the day, make certain the power cord is disconnected at the main outlets.
Protect power cords from rain and water at all times.
Make certain the ground connector of the building power receptacle is grounded.
Do not attempt to alter any connectors to fit power outlets. Do not use deteriorated or contaminated
components.

Thermal overload

When the motor is overheated because of excessive current draw or prolonged use in hot weather,
a thermal overload switch will cut power to the motor windings. Determine the cause of
overheating and make necessary corrections. Allow the motor to cool, approximately 20 minutes.
During this time, the thermal overload switch will automatically reset.
Hoist installation and reeving
These mounting and reeving instructions are directed to the reeving of a hoist mounted on the stirrup
of a stage. These same instructions are generally applicable to the reeving of hoist mounted on
work cages, bosun chairs and other work platforms.
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44UMM001.docx print date 21/06/2016
LNX