Replacing A Single Acting Pilot Relay; Figure 55: Double Acting Relay Assembly; Figure 56: Clip Spring Orientation - Flowserve Logix 520MD+ User Instructions

Spool Block
Screws (2)
Spool & Clip
Spring
Spool/Block
Assembly
Manifold
Gasket (1 of 2)
Manifold
Screws (2)
Double Acting
Relay Manifold
Assembly
Manifold
Gasket (2 of 2)
Manifold
O-Ring
Base

Figure 55: Double Acting Relay Assembly

Logix 520MD+ and 510+ Digital Positioners FCD LGENIM0105-15-AQ – 05/16
®

18.10 Replacing a Single Acting Pilot Relay

Refer to Figure 57.
Removal
1. Remove the Main Board. See procedure above.
2. Remove the two relay assembly screws.
3. Remove the single acting relay.
4. Remove the supply plug screw and O-ring.
5. Remove the Manifold gasket.
Installation
1. Place the Manifold gasket.
2. Place the supply plug O-ring and screw.
3. Place the single acting relay.
4. Place the two relay assembly screws.
5. Reassemble the main board and covers and calibrate.

Figure 56: Clip Spring Orientation

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