10.5 Replace pneumatic block
Requirement
● You are familiar with the general procedure described in the section "General information on
installing option modules (Page 51)".
Procedure
① Cord seal ③ Mounting screws
② Pneumatic block ④ Centering elements
Figure 10-1 Pneumatic block
Removing
1. Switch off the supply pressure PZ and depressurize the actuator.
2. Open the positioner as in the description depending on the device version:
– Opening the standard and intrinsically safe version (Page 52)
– Opening the device version with "flameproof enclosure" (Page 55)
3. Remove the ribbon cable from the basic electronics.
4. Tighten the two fixing screws of the basic electronics.
5. Remove the basic electronics.
6. Remove the fixing screws ③ of the pneumatic block ②.
Four screws for the single-acting pneumatic block. Five screws for the double-acting
pneumatic block.
7. Remove the pneumatic block ② and the cord seal ①.
8. Blow the existing dirt from the surface on which the pneumatic block was placed.
Installation
1. Insert the new cord seal ① into the new pneumatic block ②.
2. Press the cord seal ① into the groove on the pneumatic block ② on all sides.
Service and maintenance
10.5 Replace pneumatic block
SIPART PS2 with 4 to 20 mA/HART
202 Operating Instructions, 11/2019, A5E00074631-AE
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