MEDC Ex ResistTel MB - Manual (Page 33)

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9. The explosion protection type of the telephone is:
II 2G Ex e mb [ib] IIC T5 Gb Ex e mb [ib] IIC T5 Gb
II 2D Ex tb [ib] IlIC T100°C Db Ex tb ] IlIC T100°C Db
-25°C
≤ T
a
≤ 60°C
-25°C
≤ T
a
≤ 60°C
II 2G Ex e mb [ib] IIC T6 Gb Ex e mb [ib] IIC T6 Gb
II 2D Ex tb [ib] IlIC T80°C Db Ex tb [ib] IlIC T80°C Db
-25°C
≤ T
a
≤ 40°C
-25°C
≤ T
a
≤ 40°C
DMT 02 ATEX E 183 IECEx BVS 11.0033
10. The telephone must have zero potential to open the device. The
waiting time before opening the telephone after de-energizing the
voltage is at least 2 minutes!
11. Dust must not enter the device while it is open!
12. The cover seal and the collar of the lower part of the housing
required for the tightness of the housing cannot be damaged during
assembly or disassembly.
13. During the commissioning of the operating equipment for use in
dust, the commissioned parts should be subject to a new piece
inspection.
14. The speaking funnel from the receiver consists of non-conductive
plastic. It may charge up dangerously with high air speed. Thus, it is
forbidden to clean the speaking funnel with compressed air.
15. A rust film can form in case of a high concentration of sulphurous
gases in the air.
16. We reserve the right to modify the product for its technical
development without preliminary notice.