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Additive Feeders Chapter 2: Functional Description 14 of 50
Safety Device Lock-Outs
Some safety devices disconnect electrical energy from a circuit. The safety devices that are
used on these additive feeders are primarily concerned with electrical power disconnection
and the disabling of moving parts that may need to be accessed during the normal operation
of the machine.
Some of the safety devices utilize a manual activator. This is the method of initiating the
safety lock out. This may be in the form of a plug, lever or a handle. Within this lockable
handle, there may be a location for a padlock. Personnel servicing the equipment should
place a padlock in the lockout handle.
In addition to the safety devices listed above, these additive feeders are equipped with a line
cord plug. This allows the operator or maintenance personnel to unplug the additive feeder
from its power source and tag it out. The plug can then be tagged with any number of
approved electrical lockout tags available at most electrical supply stores.
WARNING! Always disconnect and lockout all electrical power and pneumatic (i.e. compressed air)
sources prior to servicing or cleaning the additive feeder. Failure to do so may result in
serious injury. No one but the person who installed the lockout may remove it.