7
1.8
LIST OF APPLICABLE STANDARDS
EN60079-0 (2012) + A11 (2013), EN60079-1(2007), EN60079-7 (2007), EN60079-31 (2009),
EN13463-1 (2009), EN 13463-5 (2011), IEC60079-0 (2011), IEC60079-1 (2007), IEC 60079-7 (2006),
IEC60079-31 (2008)
2
PRODUCT OVERVIEW
Manual override
STX and SQX actuators incorporate a handwheel for manual control with an automatic clutch sys-
tem with motor-drive priority. The direction of rotation is normally clockwise for closing unless
otherwise specified.
3 STORAGE
Introduction
An actuator consists of electrical components plus mechanical parts which have life-long lubrication.
Although the assembly is contained in a waterproof housing, the actuators may suffer from oxidation,
become clogged or seize during commissioning if it has not been stored correctly.
Storage
Actuators must be stored under cover in a clean, dry place which is protected against variations
in temperature.
Avoid storing directly on the ground. If stored in areas subject to damp, apply power to the actuator
to dry it out electrically. Check to ensure that the cable entries are sealed.
Ensure electrical component covers and compartments are properly sealed.
In case of a valve with an important stem lift, check that the stem protection cover is mounted
on the actuator. If not, assemble it with a weak sealing paste.
Inspection following storage
1. If stored for less than one year:
• Visual inspection of electrical parts.
• Perform a few movements manually.
• Check consistency of grease.
• Commission the actuator.
Emergency
handwheel
Terminal
compartment
Power and controls
connection
