●
Escalators
●
Continuous duty
●
Buried service
●
Permanent submersion (observe enclosure protection)
●
Potentially explosive areas, with the exception of zone 22
●
Radiation exposed areas in nuclear power plants
No liability can be assumed for inappropriate or unintended use.
Observance of these operation instructions is considered as part of the device's
designated use.
Information
These operation instructions are only valid for the "clockwise closing" standard
version, i.e. driven shaft turns clockwise to close the valve.
1.3.
Applications in Ex zone 22 (option)
Actuators of the indicated series basically meet the requirements for applications in
dust hazardous locations of ZONE 22 in compliance with the ATEX directive 94/9/EC.
The actuators are designed to meet enclosure protection IP68 and fulfil the
requirements of EN 50281-1-1:1998 section 6 - Electrical apparatus for use in
presence of combustible dust, requirements for category 3 electrical equipment -
protected by enclosures.
To comply with all requirements of EN 50281-1-1:1998, it is imperative that the
following points are observed:
●
In compliance with the ATEX directive 94/9/EC, the actuators must be equipped
with an additional identification – II3D IP6X T150 °C.
●
The maximum surface temperature of the actuators, based on an ambient
temperature of +40 °C in accordance with EN 50281-1-1 section 10.4, is +150
°C. In accordance with section 10.4, an increased dust deposit on the equipment
was not considered for the determination of the maximum surface temperature.
●
The correct connection of the thermoswitches or the PTC thermistors as well
as fulfilling the requirements of the duty type and the technical data are pre-
requisites for compliance with the maximum surface temperature of devices.
●
The connection plug may only be plugged in or pulled out when device is dis-
connected from the mains.
●
The cable glands used also have to meet the requirements of category II3 D
and must at least comply with enclosure protection IP68.
●
The actuators must be connected by means of an external ground connection
(accessory part) to the potential compensation or integrated into an earthed
piping system.
●
As a general rule, the requirements of EN 50281-1-1 must be respected in dust
hazardous locations. During commissioning, service, and maintenance, special
care as well as qualified and trained personnel are required for the safe operation
of actuators.
1.4.
Warnings and notes
The following warnings draw special attention to safety-relevant procedures in these
operation instructions, each marked by the appropriate signal word (DANGER,
WARNING, CAUTION, NOTICE).
Indicates an imminently hazardous situation with a high level of risk. Failure
to observe this warning could result in death or serious injury.
Indicates a potentially hazardous situation with a medium level of risk. Failure
to observe this warning could result in death or serious injury.
6
SQ 05.2 – SQ 14.2/SQR 05.2 – SQR 14.2 Control unit: electronic (MWG)
Safety instructions
AC 01.2 Non-Intrusive
