Applications In Ex Zone 22 (Option); Warnings And Notes - AUMA SA 07.2 Operation Instructions Manual

Safety instructions
Information
1.3

Applications in Ex zone 22 (option)

1.4

Warnings and notes

6
SA 07.2 SA 16.2/SAR 07.2
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.
These operation instructions are only valid for the "clockwise closing" standard
version, i.e. driven shaft turns clockwise to close the valve.
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 IP 68 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
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 prere-
quisites 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 IP 67.
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.
The threaded plug (part no. 511.0) or the stem protection tube with protective
cap (part nos. 568.1 and 568.2) for sealing the hollow shaft must imperatively
be mounted to guarantee tightness and therefore the combustible dust hazard
protection.
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 opera-
tion of actuators.
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.
SAR 16.2 Control unit: electromechanic
II3D IP6X T150 °C.
AC 01.2 Intrusive