Safety Precautions
Overspeed Adjustable Valve
3
Printed in USA November, 2011
Safety Precautions
IMPORTANT!
Read this page before any work is performed on elevator equipment. The
procedures contained in this manual are intended for the use of qualified
elevator personnel. In the interest of your personal safety and the safety of
others, do not attempt any procedure that you are not qualified to perform.
All procedures must be accomplished in accordance with the applicable rules in the latest edition of
the National Electrical Code, the latest edition of ASME A17.1, and any governing local codes.
Terms in This Manual
CAUTION statements identify conditions that may result in damage to the
equipment or other property if improper procedures are followed.
WARNING statements identify conditions that may result in personal injury if
improper procedures are followed.
General Safety
Before applying power to the controller, check that all factory wire connections
are tight on relays, contactors, fuse blocks, resistors, and terminals on cards and
DIN rail terminals. Connections loosened during shipment may cause damage or
intermittent operation.
Other specific warnings and cautions are found where applicable and do not appear in this sum-
mary. See
Elevator Industry Field Employees’ Safety Handbook
for electrical equipment safety
information on installation and service.
Electrical Safety
All wiring must be in accordance with the National Electrical Code and be consistent with all state
and local codes.
Use the Proper Fuse
To avoid fire hazards, use only a fuse of the correct type, voltage, and current rating. See the job
specific drawings sheet (Power Supplies) for fusing information.
Electric shocks can cause personal injury or loss of life. Circuit breakers, switches, and fuses may
not disconnect all power to the equipment. Always refer to the wiring diagrams. Whether the AC
supply is grounded or not, high voltage will be present at many points.
Printed Circuit Cards
Printed circuit boards may be damaged if removed or installed in the circuit while applying power.
Before installation and/or removing printed circuit boards, secure all power.
Always store and ship printed circuit cards in separate static bags.
