Flowserve 500+ Series Logix - Manual (Page 48)

User Instructions - Logix® 500+ Series Digital Positioners FCD LGENIM0105-10 11/13
flowserve.com 48
17.9 Cleaning and Replacing a Double
Acting Pilot Relay
Removal
1
Remove the Main Board. See procedure above.
2 Fully loosen the 2 spool block screws. By squeezing
the two screws toward each other, grip the spool block
and pull it straight out. Take care to slide the spool
straight out of the spool seat to avoid bending the spool
or damaging the clip spring. The small clip spring
should remain attached to the spool.
3 Remove the first manifold gasket.
4 Remove the 2 manifold screws.
5 Remove the manifold assembly.
6 Remove the second manifold gasket and manifold O-
ring.
Cleaning
1
Using acetone and a cotton cloth wipe down the block
and manifold.
2 Use cotton swabs to reach inside air passage ways.
3 Dry components thoroughly.
CAUTION: Follow precautions on acetone label and
MSDS.
Installation
1
Place the manifold gasket and manifold O-ring into the
base.
2 Place the manifold assembly.
3 Place the 2 manifold screws.
4 Place the manifold gasket.
5 Ensure the spool is oriented properly in the block.
Ensure the clip spring is oriented properly on the spool.
(See 48-Figure 50.) Holding the block level, slide the
spool/block/clip spring assembly onto the manifold
ensuring the proper placement of the spool and clip
spring into the piston slot and tighten the 2 spool block
screws.
6 Reassemble the main board and covers and calibrate.
Figure 48: Inserting the Double Acting Block Assembly
Figure 49: Double Acting Relay Assembly
Figure 50: Clip Spring Orientation
Spool Clip
Spring Block
Base
Double
Acting
Relay
Manifold
Assembly
Manifold
Screws (2)
Manifold
Gasket (2 of 2)
Spool/ Block
Assembly
Spool Block
Screws (2)
Manifold
Gasket (1 of 2)
Manifold
O-Ring
Spool and Clip
Spring
Piston