Also as a general intercom system, allowing supervisors and workers to locate and communicate with each other. The
down time that it takes to find personnel and to manage workers is reduced tremendously, thereby adding to the
profit of the project.
Communications is critical to provide workers a way to contact the elevator operator in case of an emergency. When
a worker is hurt or suffers a heart attack, seconds count to get medical attention to that person.
Mainly used on construction and temporary Hoists / Elevators, it is recommended by OSHA, and also
considered the industry standard.
Communication
Key to achieving that goal is the ability to communicate. On site, one person mans the operation of the hoist and its
dedicated wireless callbox, and each floor of the construction project contains another callbox mounted aside the
elevator pick up point. The callboxes operate on the same dedicated frequency. As every new floor is constructed, an
additional callbox is added. When a worker on any floor needs to communicate with the hoist operator, they simply press
the button on the callbox to make their request for materials.
Products that can be used in a hoist or manlift operation include our Q Series, XT Series, XD Series, and DMR Series
Callboxes.
Hoist, manlift, elevator, vertical transportation system, whatever term your customer uses, they’re referring to the
movement of materials and workers up and down multiple floors on a construction site. Among the variety of logistics
that must be managed, those responsible for the movement of materials long for simple, efficient, safe, and effective
means of transporting those materials. How does a site manager meet those goals?
Safety and Reliability
Since voice traffic on these callboxes is dedicated to the operation of the hoist, the channel is clear from other
voice communication occurring on site, eliminating confusing crosstalk. There are no wires to fray or become tangled,
increasing reliability and simplicity while reducing cost.
This system is easy to install and will operate on any elevator/hoist with a power or steel wire cable going from the
base to the car. No antenna wires are needed. Signal is transmitting between the car and building floor units by
inducing onto the ground leg of power cable or around the whole cable.
hoist communication system
Capabilities
Voice communication from any landing to the hoist car
Voice communication from hoist car to landings
Voice commuciation between cars on twin hoists
Single or twin car capabilities
Voice communication from jobsite office to car (optional)
Readily adaptable to temporary inside elevator cars
Excellent communications regardless of car location or motion
Added value of having an additional line for emergencies
Features
Voice communication from any landing to the hoist car
Voice communication from hoist car to landings
Voice commuciation between cars on twin hoists
Single or twin car capabilities
Voice communication from jobsite office to car (optional)
Readily adaptable to temporary inside elevator cars
Excellent communications regardless of car location or motion
Added value of having an additional line for emergencies
Major System Components
Communication Unit HCU
The Hoist communication Units (HCU)’s are mounted in each personnel hoist car and at the base enclosure. They are
powered by 110 VAC and house at the electronic FM circuitry
Coupler Unit – CU-1
The Coupler Units (CU-1)’s are mounted inside the car’s electrical enclosure and the base disconnect mounted at the
base of the tower. They are connected to their respective HCU by a two conductor wire.
Floor Call Unit
The Floor Call Units (FCU)’s are mounted at each floor landing and simply daisy chain together with the supplied 20′
riser cables that have special quick connecting plugs at each end.
CONSTRUCTION: WIRELESS INTERCOM (RADIO CALLBOX) FOR MANLIFT APPLICATIONS
Construction sites are ideal locations for fixed location, battery-powered, radio callboxes. Use at gated entry
areas, construction trailers, muster areas or as the wireless intercom system for building to Manlift elevator
communication. The ability to communicate is of paramount importance for the health, safety and productivity of workers
at the site.
The Manlift wireless intercom application involves the installation of a radio callbox on each partially
completed floor of the high-rise building under construction, and as a new floor is added, a new callbox is installed
at the temporary elevator pick-up point. The operator of the Manlift elevator is then equipped with a compatible 2-way
radio. When a worker needs to change floors, they simply press the button on the battery-powered radio callbox and
announce the floor they are currently on. If the operator has a question, they merely respond with their 2-way radio.
A industrial-grade wireless callbox system reduces long-term costs by greatly simplifying installation
requirements, increasing potential re-use of the system, and eliminating the mechanical components of wired-systems
that are notorious for maintenance and mechanical breakdowns.
Rugged, Reliable, Purpose-Built Callbox Design
Compatible with Business Band Radios, Analog, NXDN, and DMR Digital
License-Free VHF MURS Business Frequencies or VHF & UHF Licensed Business Frequencies
Designed and manufactured in the USA
See this blog post for more information
Download "Construction Hoist Intercom Problems Solved" Case Study
A suspension work platform hoist system for raising and lowering a work platform is provided. The system incorporates
at least one hoist attached to the work platform and in electrical communication with a hoist control system that may
have a data transmitter to transmit data to a remote location, a data receiver to receive data from the remote
location, and/or a monitoring and diagnostic system to monitor and record at least one of a plurality of operating
characteristics of the hoist. The hoist control system may also include a GPS tracking device that transmit a hoist
location and may prevent operation of the motor if the hoist location is not in an authorized area of operation. The
hoist control system may further include a safety lock out system that requires authentication of an operator prior to
the hoist control system causing movement of the hoist system.
Contruction Elevator Wireless Intercom System
Wireless Call Box
When a tall building is being built, a construction elevator intercom system is often needed so workers on individual
floors can call the car operator to request a ride on the construction elevator. The environment these intercoms have
to operate in is often harsh and power is not always available. A wired intercom system is usually not an option due to
the complexities of running the cable. So the desire is for a wireless system, but with all the concrete and steel in
the building, not just any wireless system will work.
A wireless call box is the device that our clients implement for construction elevators. The call box can communicate
with other call boxes, base station intercoms, or hand-held two way radios. These callboxes are placed on the
individual floors and usually the lift operator has either a base station wireless intercom or a handheld radio
depending on whether AC power is available in the car. Alternatively, another callbox can be used in the elevator, but
it will need to be AC powered since it must remain on all the time so the floors can contact the lift operator. The
callboxes on the floors can be battery powered since they can turn off after each use.
Base Station Wireless Intercom
Base Station Wireless Intercom
These callboxes are built for outdoor use so they are tough enough to survive in a construction environment. They are
available in both UHF or VHF frequencies so they can be used with existing business band radios. The VHF model also has
five unlicensed frequencies named MURS, which is short for Multi-Use Radio System. MURS does not require an FCC license
to operate.
There are also heavy duty wireless base station and hand-held devices that are available in both UHF, VHF, and MURS.
All these devices are available.
