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1 SAFETY NOTES
Warning: Any interruption of the protective conductor inside or outside the apparatus, or
Warning: Live sensors: The unit is designed to operate if the temperature sensor is connected
Warning: Grounding the temperature sensor shield: Where it is common practice to replace
Warning: The instrument must not be wired to a three-phase supply with an unearthed star
Note: Safety requirements for permanently connected equipment state:
a. A switch or circuit breaker shall be included in the building installation.
b. It shall be in close proximity to the equipment and within easy reach of the operator.
c. It shall be marked as the disconnecting device for the equipment.
Note: Recommended external fuse ratings are: 2A Type T 250V.
A
September 18
FEC920: USER GUIDE
disconnection of the protective earth terminal is likely to make the apparatus
dangerous under some fault conditions. Intentional interruption is prohibited.
directly to an electrical heating element. It must be ensured that service personnel do
not touch connections to such inputs whilst the inputs are live. With live sensors, all
cables, connections and switches for connecting the sensor must be mains rated for
use in 240V Cat II.
the temperature sensor whilst the instrument is live, it is recommended that the
shield of the temperature sensor be grounded to safety earth, as an additional
protection against electric shock.
connection, because, under fault conditions, such a supply could rise above 240V
RMS with respect to ground, thus rendering the instrument unsafe.
A5E45696052A Rev-AA
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