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X.1 G SAFETY WARNINGS
Safety Warnings and Precautions must be read and understood before the instrument is used. They must be observed during use.
■ The circuit under test must be switched off, de-energised and isolated before test connections are made when carrying out
insulation and continuity tests.
■ Continuity of protective conductors and earthed equipotential bonding of new or modified installations must be verified
before carrying out an earth fault loop impedance test, RCD or earth testing
■ Do not touch circuit connections and exposed metalwork of an installation or equipment under test. Under fault conditions
the system earth could become hazardous live.
■ Do not touch the earth stakes, test leads and their terminations (including connections to the earthing system under test) if
an installation earth fault can arise unless adequate precautions are taken.
■ The ‘live circuit warning’ and ‘Automatic discharge’ functions are additional safety features and should not be regarded as a
substitute for normal safe working practices.
■ Do not move the rotary switch positions while a test is in progress.
■ Do not operate the instrument or connect it to any external system if it shows any visible signs of damage or if it has been
stored for prolonged periods in unfavourable conditions.
■ Do not operate the instrument or connect it to any external system if the battery compartment or casing is open or any parts
of the case (including keypad, selector switch, display window, etc.) are missing.
■ Always disconnect the instrument from all systems while batteries are being changed or the fuse replaced.
■ Do not replace the rechargeable cells in the MFT1835 with non-rechargeable “dry” cells and attempt to charge the cells. This
can cause explosion or fire.
■ Do not operate the charging equipment supplied with the MFT1835 in damp or wet environments or outside. All test leads
must be removed from the instrument while charging.
■ After insulation tests, capacitive circuits must be allowed to discharge before disconnecting test leads. Locking the Insulation
test ON should only be used where there is no risk of a circuit holding a charge.
■ The instrument should not be used if any part of it is damaged.
■ Test leads, probes and crocodile clips must be in good order, clean and with no broken or cracked insulation.
■ All test leads supplied with the instrument form part of the measuring circuit of the instrument. They must not be modified
or changed in any way, or be used with any other electrical instrument or appliance.
■ A plug severed from the power cord MUST be destroyed, as a plug with bare conductors is hazardous in a live socket outlet.
■ Ensure that hands remain behind guards of probes/clips when testing.
■ Safety Authorities recommend the use of fused test leads when measuring voltage on high energy systems.
■ Replacement fuses must be of the correct type and rating.
■ Failure to fit the correctly rated fuse will result in damage to the instrument in the event of an overload.
■ Special precautions are necessary when operating in situations where “live” earths may be encountered: isolation switches
and fuses (not supplied with this instrument) must be used.
■ Special precautions are necessary when working near high tension systems (MV and HV): rubber gloves and shoes (not
supplied with this instrument) should be worn.
■ Special precautions are necessary when working in wet conditions or in agricultural areas: observe the local safety standards
and take all necessary special precautions applicable to the particular location and do not touch the test leads with bare
hands.
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