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3 STORAGE
3.1 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.
3.2 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.
3.3 Inspection following storage
If stored for less than one year:
Visual inspection of electrical parts.
Operate buttons, selectors, etc. manually to ensure that they can be
used without difficulty.
Perform a few movements manually.
Check consistency of grease.
Commission the actuator.
If stored for more than one year:
Long-term storage causes the consistency of the grease to change.
To avoid any grease-drying problem, do some rotations of the
actuator several times a year by using motor or manual override.
Visual inspection of electrical parts.
Operate buttons, selectors, etc. manually to ensure that they can be
used without difficulty.
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