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Samson 3372 - User Manual

Samson 3372
80 pages
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Translation of original instructions
EB 8313-3 EN
Type3372 with 120cm² actuator area Type3372 with 350cm² actuator area
Edition September 2019
Type3372 Electropneumatic Actuator
Actuator area: 120 and 350cm²
With Type3725 Positioner

Table of Contents

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Questions and Answers

  • A
    Adam GuerreroJul 27, 2025
    What to do if the Samson 3372 actuator stem does not move on demand?
    • T
      Tammy AyalaJul 27, 2025
      If the Samson Controller actuator stem isn't moving, there might be a few reasons. First, the actuator could be blocked. You should check its attachment and unblock it. Be careful, as a blocked actuator can suddenly move uncontrollably, potentially causing injury. Disconnect the pneumatic air supply and control signal before attempting to unblock it, and release any stored energy, like spring compression, beforehand. Another possibility is insufficient signal pressure, so check the signal pressure and the signal pressure line for leaks. Also, ensure the signal pressure is connected to the correct diaphragm chamber. If none of these solutions work, the diaphragm in the actuator may be defective.
  • J
    Joseph AndersonAug 4, 2025
    Why is the Samson 3372 Controller actuator stem not stroking through its complete travel range?
    • A
      Angela JacobsAug 4, 2025
      If the Samson Controller actuator stem isn't stroking through its complete travel range, start by checking the signal pressure and the signal pressure line for any leaks, as insufficient signal pressure could be the cause. Also, incorrect settings of valve accessories might be the problem. Inspect the actuator without valve accessories and verify the settings of the valve accessories.
  • S
    Samantha GardnerAug 11, 2025
    What to do if the actuator stem does not move on demand on my Samson 3372?
    • M
      Michael CastilloAug 11, 2025
      If the actuator stem on your Samson Controller isn't moving when it should, there could be several reasons. First, the actuator might be blocked. Inspect the attachment and carefully unblock it. Be cautious, as a blocked actuator can suddenly move uncontrollably, potentially causing injury. Disconnect the pneumatic air supply and control signal before attempting to unblock it, and release any stored energy. Another possibility is insufficient signal pressure. Check the signal pressure and look for any leaks in the signal pressure line. Also, ensure the signal pressure is connected to the correct diaphragm chamber. Finally, the diaphragm in the actuator could be defective.
  • J
    Jamie HernandezAug 18, 2025
    Why actuator stem does not stroke through its complete travel range on Samson 3372 Controller?
    • S
      stevenhopkinsAug 19, 2025
      If the actuator stem on your Samson Controller isn't stroking through its complete travel range, it might be due to a few reasons. Insufficient signal pressure could be the cause, so check the signal pressure and look for any leaks in the signal pressure line. Another reason might be incorrect settings of valve accessories. Try checking the actuator without valve accessories first, and then check the settings of the valve accessories.

Summary

Safety Instructions and Measures

Intended Use and Personnel Safety

Defines product purpose, qualifications for operators, and personal protective equipment requirements.

Safety Warnings and Responsibilities

Details severe injury risks, residual hazards, and operator/personnel duties for safe operation.

Device Markings and Identification

Actuator Nameplate and Labels

Explains identification details on the actuator, including the nameplate and preloaded spring labels.

Design and Operation Principles

Actuator Functionality and Mounting Types

Covers direction of action, signal routing, fail-safe mechanisms, mounting types, and versions.

Technical Specifications and Accessories

Details technical data, accessories like vent plugs, and lifting fixtures.

Shipment and On-Site Handling

Receiving, Transport, and Storage

Covers receiving, unpacking, transporting, lifting, and storing the actuator safely.

Mounting and Assembly Procedures

Preparation and Installation Steps

Details steps for preparing the actuator and mounting it onto the valve, including versions.

Start-up and Adjustment

Spring Preloading and Travel Configuration

Explains spring preloading, thrust increase, travel adaptation, and stop adjustment.

Handwheel Operation Guide

Details on operating actuator versions equipped with a handwheel.

Product Operation Guidelines

Service Modes and Manual Control

Describes throttling, on/off service, and manual operation modes.

Additional Operational Notes

Covers specific operational guidelines, labeling, and pressure limits.

Malfunctions and Emergency Actions

Troubleshooting Common Issues

Lists common malfunctions and recommended solutions for diagnosis.

Emergency Response Procedures

Outlines actions to take in emergency situations to ensure safety.

Service, Conversion, and Parts

Preparation, Testing, and Reassembly

Covers periodic testing, preparation steps, and reassembly after service work.

Component Service and Ordering Information

Details on replacing components, conversion, and ordering parts/supplies.

Decommissioning Procedure

Safe Shutdown for Service or Removal

Procedures for safely taking the actuator out of operation before service or removal.

Removal and Spring Compression Release

Actuator Detachment from Valve

Detailed steps for detaching the actuator from the valve assembly.

Releasing Spring Tension Safely

Procedure for safely releasing stored spring energy in the actuator.

Repair and Return Process

Returning Devices to SAMSON for Repair

Process for returning faulty units to SAMSON for repair, including required information.

Product Disposal Guidelines

Adhering to Disposal Regulations

Guidelines for proper disposal of the actuator and its components according to regulations.

Certificates and Declarations of Conformity

Compliance and Type Examination Documentation

Covers declarations of conformity (EMC, ATEX) and EC type examination certificates.

Annex: Technical References and Support

Parts Lists and Service Information

Provides spare parts lists, references to tools/lubricants, and after-sales service contact details.

Samson 3372 Specifications

Actuator Specifications IconActuator Specifications
actuator area120 or 350 cm²
valve travel15 or 30 mm

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