
5
1.3.
Installation
The device is only allowed to be installed and operated within the permissible temperature range. Please
ensure an adequate ventilation and avoid all direct contact between the device and hot or aggressive
gases and liquids.
Before installation or maintenance, the unit must be disconnected from all voltage-sources. Further it must
be ensured that no danger can arise by touching the disconnected voltage-sources.
Devices which are supplied by AC-voltages must be connected exclusively by switches, respectively
circuit-breakers with the low voltage network. The switch or circuit-breaker must be placed as near as
possible to the device and further indicated as separator.
Incoming as well as outgoing wires and wires for extra low voltages (ELV) must be separated from
dangerous electrical cables (SELV circuits) by using a double resp. increased isolation.
All selected wires and isolations must be conform to the provided voltage- and temperature-ranges. Further
all country- and application-specific standards, which are relevant for structure, form and quality of the
wires, must be ensured. Indications about the permissible wire cross-sections for wiring are described in
the Technical Specifications.
Before first start-up it must be ensured that all connections and wires are firmly seated and secured in the
screw terminals. All (inclusively unused) terminals must be fastened by turning the relevant screws
clockwise up to the stop.
Overvoltage at the connections must be limited to values in accordance to the overvoltage category II.
For placement, wiring, environmental conditions as well as shielding and earthing/grounding of the
supply lines the general standards of industrial automation industry and the specific shielding
instructions of the manufacturer are valid.
1.4.
Cleaning, Maintenance and Service Notes
To clean the front of the unit please use only a slightly damp (not wet!), soft cloth. For the rear no cleaning
is necessary. For an unscheduled, individual cleaning of the rear the maintenance staff or assembler is
self-responsible.
During normal operation no maintenance is necessary. In case of unexpected problems, failures or
malfunctions the device must be shipped for back to the manufacturer for checking, adjustment and
reparation (if necessary). Unauthorized opening and repairing can have negative effects or failures to the
protection-measures of the unit.
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