Electrical installation
Page 10 Installation guide 854 ATG
Electrical installation
The entire electrical installation shall be in accordance with International Standard IEC 79-14 for
electrical equipment to be installed in hazardous areas.
Warning
Make sure that all power to the instrument is switched off before opening
the cover of the electronic and terminal compartment.
Failure to do so may cause danger to persons or damage the equipment.
All covers of the 854 ATG
must
be closed before switching on the power.
Figure 5
Blocking / sealing facilities
Caution
Before opening the electronic and terminal compartment cover, remove the optional
blocking devices which locks the covers:
>
A
=
: for electronic compartment cover and
terminal compartment cover;
>
B
=
: for drum compartment cover.
Caution
Do not damage the thread of the covers and instrument and keep the thread free of dirt.
After opening, grease it lightly with anti seize grease.
When closing, never tighten the covers before the threads are properly engaged.
The covers should be turned counter-clockwise until the thread
A
clicks
@
in place,
then turn clockwise until the covers are fully closed.
After closing the covers, do not forget to place the blocking devices.