rotork Skilmatic SI 3, Instructions For Safe Use, Installation, Basic Setup And Maintenance

SI manual – Section: Operating Your SI Actuator

   15

6.  Operating Your SI Actuator

6.1  Manual Override (Optional)

Manual override is not a standard 

feature on SI actuators. The following 

section is only applicable for actuators 

configured for manual override 

operation.

  WARNING: 

Manual Operation 

should only be performed when there 

is no power supplied to the actuator.

Fig. 6.1.1. Manual Override Handle

  WARNING: 

The actuator cannot be 

operated electrically when in Manual 

Operation mode and will not respond 

to emergency shut down (ESD) signals 

until Electrical Operation mode is 

selected again.

The manual override feature is different 

for SI actuators without an accumulator 

and SI actuators with an accumulator. 

The manual override handle for SI 

without an accumulator has two 

positions and turns through 90°. The 

manual override handle for SI with an 

accumulator has three positions and 

turns through 180°. A steel pin fixed to 

the manual override handle indicates 

the operating mode. Figure 6.1.1 shows 

electrical operation is selected.

The following symbols indicate 

operating mode:

Electrical Operation:

Manual Operation 

Pump to Open:

Manual Operation 

Pump to Close:

Stop:

The default position (normally closed 

or normally open) is determined by the 

actuator configuration.

Fail Safe Without Accumulator

•  Pull the manual override handle 

outwards and turn to select Manual 

Operation.

•  Pull the hand pump handle out of 

the storage clips.

•  Slide the hand pump handle onto the 

hand pump lever and fit the retainer 

pin to hold them together.

•  In a smooth action, move the hand 

pump handle up and down to pump 

fluid into the hydraulic cylinder.

•  To return the actuator to the fail safe 

position, pull the manual override 

handle outwards and rotate it to 

select Electrical Operation. Pressure 

will release from the cylinder and the 

actuator will move.

Stayput Without Accumulator

•  Leave the manual override handle in the 

Electrical Operation position.

•  Pull the pump handle out of the storage 

clips.

•  Slide the handle onto the hand pump 

lever and fit the retainer pin to hold 

them together.

•  In a smooth action, move the hand 

pump handle up and down to pump 

fluid into the hydraulic cylinder.

•  To return the actuator to the default 

position, pull the manual override 

handle outwards and rotate it to select 

Manual Operation.