Range Of Application - AUMA SQEx 05.2 Operating Instructions Manual

Safety instructions
Protective measures
Maintenance
1.2.

Range of application

6
SQEx 05.2 SQEx 14.2/SQREx 05.2
The end user or the contractor are responsible for implementing required protective
measures on site, such as enclosures, barriers, or personal protective equipment
for the staff.
To ensure safe device operation, the maintenance instructions included in this manual
must be observed.
Any device modification requires prior written consent of the manufacturer.
AUMA part-turn actuators SQEx 05.2
designed for the operation of industrial valves, e.g. butterfly valves and ball valves.
The devices described below are approved for use in the potentially explosive
atmospheres of zones 1, 2, 21, and 22.
If temperatures >40 °C are to be expected at the valve flange or the valve stem (e.g.
due to hot media), please consult AUMA. Temperatures > 40 °C are not considered
with regard to the non-electrical explosion protection.
Other applications require explicit (written) confirmation by the manufacturer.
The following applications are not permitted, e.g.:
Industrial trucks according to EN ISO 3691
Lifting appliances according to EN 14502
Passenger lifts according to DIN 15306 and 15309
Service lifts according to EN 81-1/A1
Escalators
Continuous duty
Buried service
Continuous underwater use (observe enclosure protection)
Potentially explosive areas of zones 0 and 20
Potentially explosive areas of group I (mining)
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. For "counterclockwise
closing" version, a supplement must be observed in addition to these operation
instructions.
Specific conditions of use
The particular conditions of use are listed on the certificates supplied. Among others,
this includes the following conditions:
Refer to page 5, Electrostatic charging
risk of electrostatic charging within a potentially explosive atmosphere.
For information regarding the dimensions of the flameproof joints, contact the
manufacturer.
Special fasteners according to IEC 60079-0 to seal flameproof enclosures must
have the following strength classes:
- Minimum A*-70 for all special fasteners, excluding screws for fixing motors
of VKX type
- Minimum A*-80 for screws for fixing motors of VKX type
For fixing the screws, please also refer to
screws.
SQREx 14.2 Control unit: electronic (MWG)
ACExC 01.2 Non-Intrusive Profibus DP
SQEx 14.2/SQREx 05.2
for further references to minimise the
page 98, Tightening torques for
SQREx 14.2 are