WGR – Worm Gear Reducer
Instruction and operating manual
© Copyright by BIFFI Italia. All right reserved MAN 684/Rev 5 Page 5
1 GENERAL SAFETY INSTRUCTIONS
1.1 Manufacturer
Manufacturer with respect to the Machinery Directive 2006/42/EC is BIFFI ITALIA, as specified on the machinery
label.
1.2 Machine Intended Use
The machines to whose this Instruction and Operating Manual applies are the WGR series (on-off type, up to
60 starts/hour) and WGR-DW series (intermittent type up to 1200 starts/hour), designed to operate
any kind of quarter-turn industrial valve for applications in heavy industrial, chemical, petrochemical, food, water
and power generating plants. They are designed for motor operation in conjunction with electric actuators.
BIFFI ITALIA will not be liable for any possible damage or physical injury resulting from use in other than the
designated application or by lack of care during installation, operation, adjustment and maintenance of the
machinery. Such risks lie entirely with the User.
Depending on the specific working conditions, additional precautions may be required.
WGR reducers are produced by BIFFI ITALIA and identified on the proper label by product designation WGR-
XXXX.
This Manual provides basic information for the setting of WGR series reducers;
more detailed information on the setting and control of Electric Actuators
ICON2000 can be found in MAN 618, which forms part of the mandatory
instructions documentation.
It is assumed that the installation, setting, commissioning and maintenance and
repair works are carried out by qualified personnel and checked by responsible
Specialists.
Read this installation and maintenance manual carefully and completely before
storage or installation of the device. If an electric actuator is attached to the WGR
reducer, please be aware of the electrical hazards and consult the relevant
electric actuator installation and maintenance manual for guidance.
The WGR series is designed in accordance with the applicable International Rules and Specifications, but in all
cases the following Regulation must be observed:
the general installation and safety regulations
the plant specific regulations and requirements
the proper use of personal protective equipment (goggles, clothing, gloves)
the proper use of tools, lifting and transport equipment.
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