Siemens SIPART PS2 series

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⑩ Nameplate Clip

⑪ Adapter Enclosure

⑫ Transmission ratio selector

Figure 4-14 Installing the optional modules in the "flameproof enclosure" version

Procedure

1. Disconnect the power supply lines or de-energize the power supply lines.

2. Open the safety catch .

3. Unscrew the screw cap ⑮.

4. Completely dismount the positioner from the actuator.

5. Turn the feedback shaft ⑲ on the positioner until the pin (feedback lever bracket) ⑰ below

the adapter ⑪ shows in the direction of removal. If you look into the enclosure below the

adapter, you will see the position of the pin.

6. Screw out the four fixing screws ⑳ of the adapter ⑪.

7. Completely remove the adapter ⑪ carefully from the enclosure .

The positioner comes with a clip and a pin (feedback lever bracket) ⑰ which interlock

and ensure backlash-free position feedback. To ensure backlash-free position feedback

make sure you remove the adapter ⑪ carefully.

NOTICE

Displaced O-rings

There are several O-rings between adapter ⑪ and enclosure . These O-rings may

come off during removal.

● Carefully remove the adapter. Make sure the O-rings do not get lost during removal.

8. Loosen the two fixing screws ② of the module cover ①.

9. Remove the module cover ①.

If you are installing an option module, proceed as described for the respective option module.

Remove the basic electronics with an internal NCS module.

If you replace the basic electronics or a pneumatic block, proceed as described in the

respective sections under "Service and maintenance (Page 197)".

Siemens SIPART PS2 series - Page 57