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• Disconnect the live test lead before disconnecting the common test lead.
• Do not perform internal service or adjustment of this instrument unless you are qualified to do so.
Avoid Burns:
• Do not touch hot exhaust systems, manifolds, engines, radiators, sample probe, etc.
• Do not remove radiator cap unless engine is cold. Pressurized engine coolant may be hot.
• Wear gloves when handling hot engine components.
• Use a suitable battery carrier when transporting batteries.
CAUTION
• Disconnect circuit power and discharge all high voltage capacitors be
f
ore connec
t
ing the ins
t
rument
to make
resistance, continuity, or diodes measurements.
• Do not rely on questionable, erratic,
or obviously
erroneous test
informations or results. Make sure that all
connections and data entry information are correct and that the test procedure was taken correctly. Do not use
suspicious test information or results for diagnostics.
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Avoid Fires:
• Do not position head directly over carburetor or throttle body. Do not pour gasoline down carburetor or throttle
body when cranking or running engine. Engine backfire can occur when air cleaner is out of normal position.
• Do not use fuel injector cleaning solvents or carburetor sprays when performing diagnostic testing.
• The instrument has internal arcing or sparking parts. Do not expose the instrument to flammable vapors.
• Do not smoke, strike a match, place metal tools on battery, or cause a spark in the vicinity of the battery. Battery
gases can ignite.
• Keep a fire extinguisher rated for gasoline, chemical, and electrical fires in work area. Fires can lead to serious
injury or death.
WARNING
Avoid Electrical Shock:
• Make sure that the vehicle to be tested is at a safe potential before making any measurement connections.
• Connect the COM input of the instrument to vehicle ground before clamping the standard SECONDARY PICKUP
(supplied) on the ignition wires. This ground connection is required IN ADDITION TO the normal measurement
ground connections.
•
Do not touch ignition coils, coil terminals, and spark plugs while operating. They emit high voltages.
• Do not puncture an ignition wire to connect the instrument, unless specifically instructed by vehicle manufacturer.
• Be sure the ignition is in the OFF position, headlights and other accessories are off, and doors are closed before
disconnecting the battery cables. This also prevents damage to on-board computer systems.
IF the ground of the instrument is connected to a voltage higher than 42 V peak (30 V rms);
• Use only the standard test leads set supplied with the instrument.
• Do not use conventional exposed metal BNC or BANANA PLUG connectors.
•
Use only one ground connection to the instrument (GROUND LEAD of the CH A’s shielded test lead).
• Remove all probes and test leads that are not in use.
• Connect the power adapter to the AC outlet before connecting it to the instrument.
Follow the general safety guidelines below;
• Avoid working alone.
• Inspect
t
he test
leads for damaged insulation or
exposed metal.
Check
t
est lead
continuity. Replace damaged
leads before use.
• Do not use the instrument if it looks damaged.
• Select the proper function and range for your measurement.
• When using the probes, keep your fingers away from probe contacts.
Keep your fingers behind the finger guards on the probes.
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