iv
2. Operating
Environmental
Precautions
D
DANGER
■
Do not operate the super megohmmeters in the presence of flammable gas. There is s
possibility of an explosion and/or fire.
■
Do not touch the Rx “–”/“+” measuring terminals on the front panel of the instrument
during measurement. They output a maximum of
1000 V (SM-8220/8215) or 100 V
(SM-8213) for measurement.
WARNING
■
Ground the ground prong of the power cord plug to avoid electrical shock. If the ground
prong cannot be grounded, connect the GND
terminal on the rear of the instrument to a
ground. When the power cord plug is connected to the AC line socket via an
accessory 3-prong to 2-prong adapter, the green ground tab of the adapter to the
ground.
■
Do not remove the housing cover of the instrument. Even after turning off the instrument
power switch, a dangerous residual voltage
may be present for several minutes after the
power is turned off. If repair or internal readjustment is needed, contact your contact
your dealer or Hioki representative.
CAUTION
■
Before turning on the power switch for the instrument, check
that the VOLTAGE
SELECTOR switches are set for your local AC line voltage. If the wrong AC line voltage is
applied to the unit, it will be damaged (higher voltage supply) or will not function
properly (lower voltage supply).
See 1.3 Setting VOLTAGE SELECTOR Switches for setting.
Use the right size and amperage power fuse. If a fuse of incorrect amperage is inserted
into the fuse holder, the unit will be damaged.
See 1.4 Checking the Fuse Amperage for a correct fuse amperage.
■
Do not install or operate the super meghommeter on a surface which
is not level or
not stable.
