Triplett 9055 - Manual (Page 8)

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2.5 Follow the recommendations of any Trade
Organizations or Regulatory Agencies whose
scope encompasses the use of this meter. Failure
to do so may result in damage to the meter or injury
to the user.
2.6 Do not open this meter for maintenance without first
disconnecting the test leads from all external
circuitry . Failure to observe this precaution may
result in damage to the meter or injury to the user.
2.7 Repairs and maintenance must only be carried out
by qualified service personnel or qualified
electricians / technicians who know the dangers of,
and the safety rules applicable to this type of
equipment. Failure to observe this precaution may
result in damage to the meter or injury to the user.
2.8 Always set the meter to the appropriate range or
mode before connecting it to the circuitry to be
tested. Failure to observe this precaution may result
in damage to the meter or injury to the user.