General Information
16
Safety Circuit Standards
Safety circuits used in industrial systems protect the operator and maintenance personnel from
dangerous energy. They also provide a means of locking out or isolating the energy for servicing
equipment.
Various agencies have contributed to the establishment of safety standards that apply to the
design and manufacture of automated equipment. The Occupational Safety and Health
Administration (OSHA) and the National Fire Protection Agency (NFPA 70&79) are just a few
of the organizations that have joined with the plastics industry to develop safety standards.
Every effort has been made to incorporate these standards into the design of the dehumidifying
dryer; however, it is the responsibility of the personnel operating and maintaining the equipment
to familiarize themselves with the safety procedures and the proper use of any safety devices.
Fail Safe Operation
If a safety device or circuit should fail, the design must be such that the failure causes a “Safe”
condition.
Always disconnect and lockout all electrical power and pneumatic (i.e. compressed air)
sources prior to servicing or cleaning the dehumidifying dryer. Failure to do so may result
in serious injury. No one but the person who installed the lockout may remove it.
