Safety; General Safety Notes; Taking Atex/Explosion Protection Into Account - Kessel Comfort Plus SD Instructions For Installation, Operation And Maintenance

2

Safety

2.1

General safety notes

The manuals for the system and parts thereof as well as the maintenance records and handover certificates must
be kept available near the system.
Isolate the system! Make sure that cables and electrical components are disconnected
from the power supply during work.
WARNING! Live parts
The control unit's housing may only be opened by a qualified electrician.
y Work on the control unit is restricted to:
y switching on the contactor and adjusting the motor protection switch
y replacing fuses (F1) or batteries
y connection in accordance with the installation instructions and connection diagram.
All other work may only be carried out by KESSEL Customer Services or a service partner of KESSEL AG.
Beware when handling electrostatic components
Touch the top-hat rail before touching the
components on the PCB: This measure ensures that any electrostatic charges
are balanced by you "connecting your body to ground" .
2.2

Taking ATEX/explosion protection into account

The EX-symbol identifies components and products that satisfy the ATEX requirement
(ATEX Guideline 2014/34/EU).
Only use ATEX system(s) and explosion-proof components in potentially explosive zones.
Separate safety measures have to be taken for potentially explosive zones:
y Carry out an ATEX risk assessment according to the valid EU Directive and define EX zones.
y Check whether the pump(s) and remaining system components (incl. accessories) are designed for ATEX use
and satisfy the requirements of the defined zone.
y Check whether the control unit is suitable for operation together with the pumps
used and is designed as an ATEX variant.
If in doubt, check the ATEX marking and technical specifications.
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