Ryobi RP4020 - Manual (Page 4)

4 – English
 Before you use the meter, inspect the case. Pay particular
attention to the insulation surrounding the connectors.
Inspect the test leads for damaged insulation or exposed
metal. Check the test leads for continuity. Replace
damaged test lead before you use the meter.
 Do not use the meter if it operates abnormally. Protection
may be impaired. When in doubt, have the meter
serviced.
 Do not operate the meter in a place where flammable or
explosive gas (or dust) is present.
 Do not apply more than the rated voltage, as marked on
the meter, between terminals or between any terminal
and earth ground.
 When measuring current, turn off circuit power before
connecting the meter in the circuit. Remember to place
the meter in series with the circuit.
 Use caution when working above 30V AC rms, 42V peak,
or 60V DC. Such voltages pose a shock hazard.
 When using the probes, keep your fingers behind the
finger guards on the probes.
 When making connections, connect the common test
lead before you connect the live test lead.
 When you disconnect test leads, disconnect the live test
lead first.
 Remove all test leads from the meter before you open
the battery cover or portion of the case.
 Do not operate the multimeter with the battery door or
portions of the case loosened or removed.The battery
door should be securely closed before operating the
multimeter.
 To avoid false readings, which could lead to possible
electric shock or personal injury, replace or charge the
battery as soon as the low battery indicator (
)
appears.
 Use the meter only as specified in this manual; otherwise
the safety features of the meter may be impaired.
 When in Relative mode or in Data Hold mode, caution
must be used because hazardous voltage may be
present.
 Do not electrically connect yourself to ground. Use
extreme caution because you may ground yourself if you
are careless.
 Do not operate this meter if your hand or the meter is
wet.
 Adhere to local and national safety codes.
 Use Individual protective equipment to prevent shock and
arc blast injury when working in an area where hazardous
live conductors are exposed.
 Remaining endangerment: When an input terminal is
connected to dangerous live potential, it is to be noted
that this potential at all other terminals can occur!
 CATIII - Measurement category III is for measurements
performed in the building installation. Examples are
measurements on distribution boards, circuit breakers,
wiring, including cables, bus-bars, junction boxes,
switches, socket-outlets in the fixed installation, and
equipment for industrial use and some other equipment, for
example, stationary motors with permanent connection to
fixed installation. Do not use the meter for measurements
within Measurement Categories IV.
 Use the proper terminals, function and range for your
measurements.
 Before measuring current, check the meter’s fuses and
turn off power to the circuit before connecting the meter
to the circuit.
 Before rotating the mode selection dial to change
functions, disconnect test leads from the circuit under
test.
 Be sure the test leads and switch are in the correct
position for the desired measurement.
 Never measure resistance in a circuit when power is
applied.
SPECIFIC SAFETY RULES
 Battery products do not have to be plugged into
an electrical outlet; therefore, they are always in
operating condition. Be aware of possible hazards
when not using your battery product or when changing
accessories. Following this rule will reduce the risk of
electric shock, fire, or serious personal injury.
 Do not place battery products or their batteries near
fire or heat. This will reduce the risk of explosion and
possibly injury.
 Do not crush, drop or damage battery pack. Do not
use a battery pack or charger that has been dropped
or received a sharp blow. A damaged battery is subject
to explosion. Properly dispose of a dropped or damaged
battery immediately.
 Batteries can explode in the presence of a source
of ignition, such as a pilot light. To reduce the risk of
serious personal injury, never use any cordless product
in the presence of open flame. An exploded battery can
propel debris and chemicals. If exposed, flush with water
immediately.
 For best results, your battery product should be
charged in a location where the temperature is more
than 50°F but less than 94°F. To reduce the risk of serious
personal injury, do not store outside or in vehicles.
GENERAL SAFETY RULES