12.2.2. Disconnection from the mains with KT/KM electrical connection
Figure 78: 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
Flameproof enclosure, danger of explosion!
Risk of death or serious injury.
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Before opening, ensure that there is no explosive gas and no voltage.
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Handle cover and housing parts with care.
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Joint surfaces must not be damaged or 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 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].
81
SQEx 05.2 – SQEx 14.2 / SQREx 05.2 – SQREx 14.2 Control unit - electromechanical
ACExC 01.2 Intrusive Servicing and maintenance
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