Servomech S.p.A.
02.20-25-28-30-40.E - Rev. 01 Date (M/Y) 05/19
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COMMISSIONING AND USE
SERVOMECH linear actuators are supplied lubricated and ready to be used. Before to start commissioning
and activation, the following checks must be carried out:
Shifting direction check
Check if the push rod shifting direction is compatible to the indications on the control unit, by
powering the electric motor on VERY BRIEFLY. If not, see Section 6.7.
For actuator without ANTI-ROTATION device (AR): TO ALLOW THE TRANSLATION OF THE ROD END,
THE PUSH ROD ROTATION MUST BE REACTED BY USING EXTERNAL GUIDES.
Check of extreme working positions
Check if the extreme dimensions of the actuator “Lc” and “La” (see Fig. 6.6) are compatible with
extreme positions of the plant component that has to be moved.
Measure the initial length of the actuator, then run the actuator GRADUALLY from the control unit,
in order to reach the plant to its more distant extreme position.
Check continuously the current actuator length during the motion.
Repeat the same procedure for the other extreme position.
TO AVOID DAMAGES, DO NOT TRAVEL OVER THE EXTREME STROKE VALUES Lc and La!
DO NOT REACH STROKE END MECHANICAL STOP!
Commissioning
At this stage it is possible to start commissioning:
Carry out one complete working cycle, without load, adjusting the previously set limit switch
positions if necessary (see Sections 6.2 , 6.3).
Carry out some complete working cycles, increasing gradually the load, until full load is reached.
ONLY IN CASE ON ATL ACTUATOR (ACME SCREW DRIVE): DURING COMMISSIONING, DO NEVER
EXCEED THE MAX ALLOWED DUTY CYCLE FOR THE LINEAR ACTUATOR: 30% OVER 10 MIN TIME
PERIOD AT 25°C ENVIRONMENT. ANY ABUSE OF SUCH DUTY CYCLE CAN CAUSE OVERHEATING AND
UNINTENTIONAL PREMATURE DAMAGING!
