13.2.
Disconnection from the mains
If the device must be dismantled, e.g. for service purposes, it can be isolated from
the mains without having to remove the wiring at the electrical connection.
13.2.1.
Disconnection from the mains with KT/KM electrical connection
Figure 89: 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.
→
Before opening the flameproof enclosure, ensure absence of gas and voltage.
→
Handle cover and housing parts with care.
→
Joint surfaces must not be damaged or soiled in any way.
→
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.
86
SAEx 07.2 – SAEx 16.2/SAREx 07.2 – SAREx 16.2 Control unit: electronic (MWG)
Servicing and maintenance
ACExC 01.2 Non-Intrusive HART
