●
Check actuator.
●
In case of ingress of water, locate leaks and repair. Dry device correctly and
check for proper function.
12.2.
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.
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.
→
Flameproof joints must neither be damaged nor soiled in any way.
→
Do not jam cover during fitting.
Figure 75: KES electrical connection
[1]
Cover
[2]
Screws for housing
[3]
O-ring
[4]
Connection frame (KES)
Removing the plug:
1.
Loosen the screws [2].
2.
Remove electrical connection.
➥
For electrical connections of KES type, cover [1] and connection frame [4] remain
assembled.
3.
Seal open plug/socket connection, e.g. using AUMA protection cover and
parking frame.
Fitting the plug:
4.
Clean sealing faces of plug/socket connector and housing.
5.
Preserve joint surfaces with an acid-free corrosion protection agent.
6.
Check whether O-ring [3] is in good condition, replace if damaged.
7.
Apply a thin film of non-acidic grease (e.g. petroleum jelly) to the O-ring and
insert it correctly.
8.
Replace electrical connection and fasten screws evenly crosswise.
12.3.
Maintenance
Maintenance intervals
In compliance with EN 60079-17, Ex certified products either require repeated testing
at an interval of 3 years or continuous monitoring by trained personnel.
Manual operation
During maintenance, the mechanical parts of the handwheel activation, in particular
motor coupling and retaining spring, must be checked. Replace the parts in case of
visible wear.
70
SAEx 07.2 – SAEx 16.2 / SAREx 07.2 – SAREx 16.2 Control unit: electronic (MWG)
Servicing and maintenance
ACExC 01.2 Non-Intrusive Modbus TCP/IP
