Ametek 420VA Manual page 9

This equipment generates, uses and can radiate radio frequency energy
and if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is
no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio and/or television
reception, which can be determined by turning the UPM equipment on
and off, the user is encouraged to try to correct the interference by one
or more of the following measures:
Relocate the UPM
Relocate the load.
This device complies to Part 15 of the FCC Rules. Operation is subject
to the following two conditions: (1) this device may not cause harmful
interference and (2) this device must accept interference received,
including interference that may cause undesired operation.
A01-00055 Rev G
9