Flowserve 3400MD Digital Positioner - Manual (Page 5)

5
Logix 3400MD Digital Positioner FCD LGENIM3404-08-AQ – 5/15
flowserve.com
The vent assembly is located in the upper left side of the positioner.
The gaps around the assembly as noted by the arrows should be
sealed for long term storage
A small desiccant package as shown can be included under the
sealing tape to ensure proper protection.
All of the edges around the vend assembly should be sealed similar to
the picture below.
The sealing tape and desiccant should be removed when instrument
air is permanently applied to the positioner.
3.3 Pre-installation Inspection
If a valve control package has been stored for more than one year,
inspect one actuator by disassembling it per the appropriate Instal-
lation, Operation, and Maintenance Instructions (IOM) prior to valve
installation. If O-rings are out-of-round, deteriorated, or both, they
must be replaced and the actuator rebuilt. All actuators must then
be disassembled and inspected. If the actuator O-rings are replaced,
complete the following steps:
1. Replace the pressure-balance plug O-rings.
2. Inspect the solenoid and positioner soft goods and replace
as necessary.