11.1. Switch compartment: open/close
Figure 81: Open/close switch compartment
[A] Mechanical position indication (self-adjusting)
[B] Mechanical position indication via indicator mark
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.
Open
1. Loosen screws [2] and remove cover [1] from the switch compartment.
Close
2. Clean sealing faces of housing and cover.
3. Preserve joint surfaces with an acid-free corrosion protection agent.
4. Check whether O-ring [3] is in good condition, replace if damaged.
5. Apply a thin film of non-acidic grease (e.g. petroleum jelly) to the O-ring and
insert it correctly.
6. Place cover [1] on switch compartment.
7. Fasten screws [2] evenly crosswise.
11.2. Mechanical position indicator (self-adjusting)
Figure 82: Mechanical position indicator (self-adjusting)
The self-adjusting mechanical position indicator shows the valve position by means
of an arrow . When correctly set, the arrow points to symbol (OPEN) or
(CLOSED) in the end positions.
73
SQEx 05.2 – SQEx 14.2/SQREx 05.2 – SQREx 14.2 Control unit: electronic (MWG)
ACExC 01.2 Non-Intrusive Profibus DP Commissioning (settings in the actuator)
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