
Safety instructions
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Safety instructions
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Operating manual [27779165/EN] - EMS modular controls
4.3.1
Danger from electrical energy
Carry out the following safety work in accordance with VDE 0105-100 (this work must
be carried out by a qualified electrician, see section ""Personnel requirements" (
16)").
Unlocking
Required isolating distances must be established.
Secure against restart
During work, a prohibition sign must be attached reliably on switching handles or drives
of switches, control units, pressure and sensing devices, safety parts, circuit breakers
that have been used to unlock a system part or that can be used to connect electricity.
If this is not possible, then the clearly associated prohibition sign must be nearby. In the
case of manually operated switches, existing interlocking devices must be used to pre-
vent them from being switched on again.
Determine that electricity is disconnected
Absence of voltage is to be determined at or as close as possible to the work site at all
poles. Absence of voltage must be checked with a voltage tester immediately before and
after use.
Grounding and short circuiting
Parts on which work will be performed at the work place must first be grounded and then
short circuited. Grounding and short-circuiting must be visible from the workplace. De-
viating from the above, it is permitted to ground and short-circuit near the work place if
this is required due to local conditions or for safety reasons. Devices for grounding and
short-circuiting must always first be connected with the grounding system or the ground
electrode and afterwards with the parts to be grounded. Grounding and short circuiting
may be waived in certain low-voltage systems (see VDE 0100-100).
Cover and block adjacent parts that are connected to electricity
Before starting work, check whether it is feasible to disconnect adjacent parts
from electricity.
⚠
DANGER
Electric current hazard!
Death or serious injuries
•
No live parts may be touched!
•
It must be ensured that components are not live (switch off the voltage) or, if this is
not possible, cover the parts with insulating material.
•
Live parts must be secured against unauthorized approach.