Manually Changing The Stem Position; Maintenance; Preparation For Return Shipment - Samson TROVIS 5724-8 Mounting And Operating Instructions

6.6 Manually changing the
stem position
TROVIS 5724-8 only
A manual adjustment of the stem position
only makes sense when the supply voltage is
switched off as the stem position is deter-
mined by the actuator in closed-loop opera-
tion, meaning any manual adjustment would
be automatically corrected by the actuator.
The stem position is changed at the hand-
wheel:
Î Switch off the supply voltage.
Î Turn clockwise to extend the actuator
stem (approx. 4 turns for 1 mm travel).
Î Turn counterclockwise to retract the actu-
ator stem (approx. 4 turns for 1 mm trav-
el).
EB 5724-8 EN

7 Maintenance

Note
The electric actuator with process controller
was checked by SAMSON before it left the
factory.
− The product warranty becomes void if
maintenance or repair work not described
in these instructions is performed without
prior agreement by SAMSON's After-sales
Service department.
− Only use original spare parts by
SAMSON, which comply with the original
specifications.
7.1 Preparation for return ship-
ment
Defective electric actuators can be returned
to SAMSON for repair.
Proceed as follows to return valves to
SAMSON:
1. Put the control valve out of operation and
remove it from the pipeline. See associat-
ed valve documentation.
2. Remove the electric actuator from the
valve. See section 9.2.
3. Send the electric actuator to your nearest
SAMSON subsidiary. SAMSON subsid-
iaries are listed on our website at
u www.samson.de > Contact.
Maintenance
33