Polar Electro Toneohm 550A, Operator'S Manual

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SAFETY
iii
SAFETY
WARNING
The LIVE and NEUTRAL lines on this unit are BOTH fused.
This unit contains no user-serviceable parts. When the unit is connected to its supply,
the opening of covers or removal of panels is likely to expose dangerous voltages. To
maintain operator safety, do not operate the unit unless the enclosure is complete and
securely assembled.
GROUNDING
This unit must be earthed (grounded); do not operate the instrument with the safety
earth disconnected. Ensure the instrument is connected to an outlet with an effective
protective conductor terminal (earth). Do not negate this protective action by using an
extension cord without a protective conductor.
Note: This instrument is fitted with 3-wire grounding type plug designed to fit only into a
grounding type power outlet. If a special local plug must be fitted to the power cord
ensure this operation is performed by a skilled electronics technician and that the
protective ground connection is maintained. The plug that is cut off from the power cord
must be safely disposed of.
Power cord color codes are as follows:
Europe
brown live
blue neutral
green/yellow earth (ground)
United States
black live
white neutral
green ground