Adjustment With Electric Actuator; Adjustment With Electric Actuator Without Fail-Safe Action; Adjustment With Electric Actuator With Fail-Safe Action - Samson 2489/58 Series Mounting And Operating Instructions

Operation
4. To fix the flow rate setting in DN 32 to
50, tighten the fixing screw (8.7). The
setting must not be fixed in DN 15 to 25.
5. Pull the wire through the lead-seal hole
(8.4) and lead-seal it.
6. Reconnect the power supply to the elec-
tric actuator (16).
Tip
For exact adjustment, verify adjusted value
with a heat or flow meter.
6.4 Adjustment with electric
actuator
WARNING
!
Observe the relevant safety regulations on
mounting or removing the electric actuator.
NOTICE
!
Electric actuators are designed for use in
electrical power systems. For wiring and
maintenance, you are required to observe
the relevant safety regulations. Only use
power interruption devices that are protected
against unintentional reconnection of the
power supply.
Be careful while performing adjustment work
on live parts. Never remove any covers!
30
Note
The flow rate indicated in the diagram
(Fig. 7) is reduced by approximately 20 %
for valves in sizes DN 32 to 50 which are
combined with Types 5821 and 5822 Elec-
tric Actuators (discontinued).
NOTICE
!
The TROVIS 57xx and Type 58xx Electric
Actuators are configured as described in the
actuator documentation (Referenced docu-
mentation on page 8).
6.4.1 Adjustment with electric
actuator without fail-
safe action
1. Retract the actuator stem by turning the
handwheel at the electric actuator coun-
terclockwise or by applying a corre-
sponding control signal from the control
device.
2. To continue, proceed as described in sec-
tion 6.1.
6.4.2 Adjustment with electric
actuator with fail-safe
action
1. Switch the control device to manual
mode and change the control signal to
retract the actuator stem all the way and
compress the spring mechanism.
EB 3135-2 EN