DURAG D-LX 200, Руководство пользователя

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Installation, Commissioning
5.3.3 Electrical connection
Installation occurs in accordance with the dimensional drawing of the Compact
Flame Monitor D
− LX 200, D − LX 720 (see Figure 11.2 page 104, and Figure
11.3 Page 105). The electrical installation is performed in compliance with the
customary local regulations and the wiring diagram.
The class of protection of the flame monitor complies with IP 6
8
. This
protection only exists if the housing cover is fitted. Operation of the Compact
Flame Monitor when open is not permitted.
The Compact Flame Monitor can bridge power failures for up to 20ms.
The location of fuses F1 and F2 is visible from Figure 5.3.
The fuse F2 protects the relay for Flame ON indication. Should an exchange of
this fuse become necessary it is mandatory that the correct operation of the
relay is checked before further use of the Compact Flame Monitor.
Fuse F2
Fuse F1
Fuses MST 250
F1 (left) =0.5 A slow-blow, F2 (right) = 0.5 A slow-blow
Figure 5.3: Location of the fuses
The housing cover must be removed in order to adjust the thresholds, the gain
characteristic and the filter, and to replace fuses (switch off operating voltage
beforehand). When fitting the housing cover back on, make sure that the
printed circuit boards slide correctly into the guide rails and that the connection
lines are not pinched.
In order to exclude possible disturbances due to transient currents on the
protective conductor (e.g. currents from an ignition device to protective
conductor potential), DURAG D-ZS 117-I insulators can be inserted between
the sighting tube and the flame monitor. In this case the tube or hose line for
the purge air connection of the flame monitor must also comprise non-
conductive material.
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D − LX 200, D − LX 720