Safety instructions
5
• During operation, the housing warms up and surface temperatures >140°F
(60°C) may occur. To prevent possible burns, we recommend checking the sur-
face temperature using an appropriate thermometer and protective gloves, prior to
working on the device.
Protective measures The end user or the contractor is responsible for implementing required protective
measures on site, such as enclosures, barriers, or personal protective equipment for
the staff.
Maintenance 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.
1.2
Range of application
AUMA part-turn actuators SQEx/SQREx are 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 atmos-
pheres in compliance with the classification (class, division) as specified on the name
tag.
Other applications require explicit (written) confirmation by the manufacturer.
The following applications are not permitted, e.g.:
• Industrial trucks
• Lifting appliances
• Passenger lifts
• Service lifts
• Escalators
• Continuous duty
• Buried service
• Continuous submersion (observe enclosure protection)
• Radiation exposed areas in nuclear power plants
No liability can be assumed for inappropriate or unintended use.
Observance of this operation manual is considered as part of the device's designated
use.
This operation manual is only valid for the clockwise closing standard version, i.e. the
driven shaft turns clockwise to close the valve. For counterclockwise closing version, a
supplement must be observed in addition to this operation manual.
1.3
Warnings and notes
The following warnings draw special attention to safety-relevant procedures in this op-
eration manual, each marked by the appropriate signal word (DANGER, WARNING,
CAUTION, NOTICE).
DANGER
Indicates an imminently hazardous situation with a high level or risk.
Failure to observe this warning results in death or serious injury.
WARNING
Indicates a potentially hazardous situation with a medium level of risk.
Failure to observe this warning could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation with a low level of risk. Fail-
ure to observe this warning could result in minor or moderate injury. May
also be used with property damage.
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