13.2.1. Disconnection from the mains with KT/KM electrical connection
Figure 90: KT/KM electrical connection
[1] Cover
[2] Screws for cover
[3] O-ring
[4] Screws (with gaskets) within connection frame
[5] Connection frame
[6] Grub screws within connection frame
Ignition of potentially explosive atmospheres caused by sparks!
Risk of death or serious injury!
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Before opening the flameproof enclosure, ensure absence of gas and voltage.
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Handle cover and housing parts with care.
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Flameproof joints must neither be damaged nor soiled in any way.
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Do not jam cover during fitting.
Removing the plug:
1. Loosen the screws [2].
2. Remove cover [1].
3. For versions with terminal compartment in type of protection Ex d (flameproof
enclosure): Remove grub screws [6] inside the connection frame.
4. Loosen screws [4] inside the connection frame.
5. Remove electrical connection.
Fitting the plug/socket
connector:
6. Clean sealing faces of plug/socket connector, cover and housing.
7. Preserve joint surfaces with an acid-free corrosion protection agent.
8. Check whether O-rings [3] are in good condition, replace if damaged.
9. Apply a thin film of non-acidic grease (e.g. petroleum jelly) to the O-rings and
insert them correctly.
10. Fit electrical connection (connection frame) and fasten screws [4] (with gaskets)
evenly crosswise.
11. For versions with terminal compartment in type of protection Ex d (flameproof
enclosure): Fasten grub screws [6] (tightening torque approx. 10 Nm).
Information: The flameproof enclosure is only guaranteed provided the grub
screws are fastened [6].
86
SQEx 05.2 – SQEx 14.2/SQREx 05.2 – SQREx 14.2 Control unit: electronic (MWG)
Servicing and maintenance ACExC 01.2 Non-Intrusive Profibus DP
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