Operating Manual EMGZ421
2
1
Safety Instructions
1.1
Description conditions
a) High danger of health injury or loss of life
Danger
This symbol refers to high risk for persons to get health injury or loss life. It has to be
followed strictly.
b) Risk of damage of machines
Caution
This symbol refers to informations, that, if ignored, could cause heavy mecanical damage.
This warning has to be followed absolutely.
c) Note for proper function
Note
This symbol refers to an important information about proper use. If not followed,
malfunction can be the result.
1.2
List of safety instructions
Proper function of the tension measuring amplifier is only guaranteed with the
recommended application of the components. In case of other arrangement, heavy
malfunction can be the result. Therefore, the installation instructions on the
following pages must be followed strictly.
Local installation regulations are to preserve safety of electric equipment. They are not
taken into consideration by this operating manual. However, they have to be followed
strictly.
Bad earth connection may cause electric shock to persons, malfunction of the total
system or damage of the measuring amplifier! It is vital to ensure that proper earth
connection is done.
The processor board is mounted directly behind the operation panel. Improper
handling may damage the fragile electronic equipment! Don’t use rough tools as
screwdrivers or pliers! Don’t touch processor board! Touch earthed metal part to
discharge static electricity before removing operation panel!
Some contacts on the power supply are under 110V resp. 230V tension! Mortal
danger! Disconnect power supply before open the housing!
