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04 DESISTI

Theatre application. The Scenery Hoist can be moved along rails. This micro switches, travel limit device). The separation of these elements
product can be either installed in permanent fixed positions directly to allows maintenance procedures to be performed safely and the
the I-beam sub-structure of the building, or to any supporting grid to electrical components maintained in a clean environment.
pick up move scenery or other heavy objects in the Studio. The Spot ≫ OPERATIONAL The Spot Line Hoist is capable of lifting a (SWL) safe
Line Hoist has an added feature as illustrated above, to be installed working load of 400-lbs/181 kg. The maximum travel distance is 35
under a rail system with either a manual or a motorized trolley. This feet /10.5 meters.
allows for the ability to move the sets along rails and to be positioned ≫ OPTIONAL FEATURES The De Sisti Spot Line Hoists offer several
in the precise location where they are needed. The Hoist used as a unique optional features:
Spot line can lower a Lighting Instrument, Chandeliers in an auditorium 1. A provision to enable the hoist to be raised or lowered with a cranking
or they can be grouped together to lower a lighting Truss. tool in case of a hoist failure.
≫ MECHANICAL A special frame maintains a clear separation between 2. Positioning Control memorizes and recalls the position of each hoist
the moving parts (mechanical elements in motion), like steel ropes, and record that position into a preset.
winding discs, diverter pulleys, load sensor mechanisms) and the 3. DMX Up/Down and Positioning Control via any standard DMX
electrical components (electrical wiring, motor switch-gears, safety controlled lighting system.

SPECIFICATIONS ACCESSORIES
The De Sisti Spot Line Hoist shall be a completely self-contained Mod Description
enclosure housing a drive unit of monoblock design. The Total lifting capacity of 240 kg / 530 lbs.
assemble shall house a 1.1kw 3-phase motor integrated with a winch unit:
Net lifting capacity of
dynamic self sustaining worm-geared set with a screw helix HOIST(PAYLOAD): Safe Working Load is 181 kg. / 400 lbs.
angle less than 4 degrees to prevent back winding. (Systems Number of lift cables: 2 independent steel ropes
needing break motors to obtain a dynamic stop or systems with 4 mm. diameter, 7 x 19 construction,
only static self sustaining gear motors will not be accepted). Lift cable specifications: galvanized steel wire ropes, specific resistance
class 200 kg.: sq.mm. UNI 7293-74. Minimum
The motor shall be equipped with a built-in thermal protection breaking Load 1,200 kg / 2,400 lbs
device, designed to stop the electrical supply to the motor in Lifting speed (average): 6 m/min. - 19’ 8”/min.
case of excessive heat. The device shall automatically reset 1.1 kW, 3 phase AC primary supply: either one
of the 3 following voltages are available
when the motor temperature decreases and allow the unit to 240/415 V 50 Hz +/- 5 %
return to normal operation. Incorporated into the hoist system 220/380V-50 Hz +/- 5 %, 4,4/2,5 A steady
state current, 12/7 A Start up current
shall be cut out safety micro switches (double activated SPRING Winch Unit specs for 120/208 V 60 Hz +/- 5 %, 8,2/4,7 A steady
–LEVER) for each cable line for slack line and over load Vertical lift: state current, 23/13 A Start up current
Transmission ratio 238,1:1
detection, plus travel limit switches, one for the top limit plus Automatic interlock: Sd Dynamic automatic
extra safety stop switch and one bottom limit switch and plus interlock (DIN 15560 – 46 SELF SUSTAINING)
Motor speed n1 = 2.800 rpm. Output speed n2
extra safety stop switch = 11.8 rpm. Nominal Output Torque = 270 Nm.
The hoist frame shall be a folded steel housing and designed in Over/under load sensing mechanism
such a way as to separate all moving parts from the electrical Load Sensing: independent on each lift cable
components and power elements. The unit shall house along TÜV approved mechanism, including 4 fine
with the motor all the wiring. The housing shall also incorporate adjustable safety switches (resolution of 3 mm.
in a 10.5 m. travel), including:
transparent inspection panels in order to visually inspect all Travel limit system EXTRA TOP LIMIT, TOP LIMIT, BOTTOM LIMIT,
relevant safety parts, including load sensing, lift cable discs and EXTRA BOTTOM LIMIT The mechanism can be
easily retrofitted with positioning sensor.
lift cable terminations.
The average lifting speed shall be 25 feet per minute. The SWL
(self working load) shall be 400 lbs./ 181 kg with a maximum SPOT LINE HOIST DRAWINGS
travel of 35 feet. Each of the four steel lifting cables shall be
4mm in diameter, constructed in (7 groups X 19 wires), with a
breaking force on each wire rope of at least 1,200 kg / 2,400
lbs.
The entire device shall be DIN approved under section #15560
Part 46, (Worldwide Safety Standard for overhead devices) be
TÜV certified and carry the U.L. label approved as a complete
system. Hoists with U.L. approved components but not tested
and approved as a complete system will not be accepted
There are several Control Options offered by De Sisti Rigging
and Automation
≫Up /Down Push Button Control with (optional) remote control
≫DMX Up / Down Control as well as the Positioning Control
≫HRC System ( hoist remote control ) with manual back up.
≫ ICARUS Control System (memory control for hoists and
automated lighting).

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