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6 DISMANTLING
THE INSTRUMENT
6.1 GENERAL INFORMATION
The instrument shall be disconnected from all voltage sources before
any adjustment, replacement or maintenance and repair during which
the instrument will be opened.
Bear in mind that capacitors inside the instrument may still be charged
even if the instrument has been separated from all voltage sources.
During dismantling procedures,
a careful note must be made
of all
disconnected
leads,
to ensure
that they may be reconnected
to
their correct terminals
during assembly.
Damage
may result if the instrument is switched
on when
a circuit
board
has been
removed,
or if a circuit board
is removed
within
one minute
after switching off the instrument.
NOTE:
All screws which have to be remounted directly in the housing-parts must be
fixed with a torque of maximum
1 Nm.
6.2 REMOVING
THE TOP- AND BOTTOM
COVERS
To adjust the instrument it is necessary to remove both the top- and bottom covers.
6.2.1
Removing the top cover
~
remove the 6 mounting screws, 3 left, 3 right, 2 on the top (fig. 6.1)
—
now the top cover can be lifted vertically.
6.2.2
Removing the bottom cover
—
remove the 8 mounting screws, 1 left, 1 right, 6 on the bottom.
-
now, the bottom cover can be lifted vertically.
6.2.3
Remounting the covers.
Remounting the covers can be carried out in reversed order.
6.1 GENERAL INFORMATION
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