User Manual

3 Safety instructions
4
2 Observe prior to use!
• The instruction manual contains information and instructions which are
necessary for operating and using the instrument safely. Before using
the instrument, read the instruction manual carefully and comply with
all aspects of it. Keep this document to hand so that you can refer to it
when necessary. Forward this documentation to any subsequent users
of the instrument.
• If the manual is not followed, or if you fail to observe the warnings and
instructions, there is a risk of fatal injury to the user and damage to the
instrument.
3 Safety instructions
• The instrument may only be used by trained personnel. During all
operations, please observe the Employers' Liability Insurance
Association provisions for health and safety at work.
• In order to prevent electric shock, take safety precautions when
working with voltages greater than 120 V (60 V) DC or 50 V (25 V)
rms. AC. These values are the limit for contact voltages in accordance
with DIN VDE (values in brackets apply to restricted areas, for example
agricultural sectors).
• The measuring instrument may only be used in 16 A fused electrical
circuits up to a nominal voltage of 600 V (testo 760-1 and -2) / 1000 V
(testo 760-3). The nominal cross-section of the connection cable must
be taken into account in order to ensure safe connection (e.g. via
crocodile clips).
• Measurements that are dangerously close to electrical installations
must only be carried out under the direction of a qualified electrician,
not by oneself.
• The instrument may only be touched at the designated grip areas, the
display elements must not be covered.
• If the safety of the operator and his surroundings can no longer be
guaranteed, the instrument must be taken out of service and prevented
from being used inadvertently. This is the case if the instrument:
• Is obviously damaged. e.g.
- Housing breakages
- Defective test leads
- Leaking batteries
• Does not carry out the required measurements
• Has been stored too long in unfavourable conditions
• Has been exposed to mechanical stresses during transit.
• Prevent the instrument from being heated due to exposure to direct
sunlight. This is the only way to guarantee the instrument will function
perfectly and have a long service life.
• If the instrument needs to be opened, e.g. to change a fuse, this may
only be carried out by a qualified specialist. Prior to opening, the
instrument is to be switched off and disconnected from all electrical
circuits.
• Maintenance work that is not described in this documentation must
only be carried out by trained service technicians.
• If the instrument is modified in any way, operational safety can no
longer be guaranteed.
• Only use test leads and terminals listed in the Accessories and spare
parts section in this documentation.