Air Torque AT351U - User Manual

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Original instructions

EB AT-RP-4GU EN

4th Generation Upgrade Series

Rack&Pinion actuators

AT045U → AT801U models

Edition November 2020

Table of Contents

Other manuals for Air Torque AT351U

Installation Maintenance And Operating Instructions12 pages

Questions and Answers

B
baileylawrenceAug 8, 2025
What to do if my Air Torque AT351U Controller loses power?
- J
  Jeremy BrownAug 9, 2025
  If your Air Torque Controller experiences a loss of power, first ensure that the supply pressure is correct by checking the control system. Then, inspect all tubing and fittings for blockages, compression, or sealing issues, removing any obstructions or damaged parts. Also, you should disassemble the actuator to inspect and replace any damaged seals. Check the air exhaust hole and remove any plugs or foreign objects that may be blocking it.
P
Paul BurkeAug 18, 2025
Why is my Air Torque Controller rotation uneven?
- T
  tammy17Aug 18, 2025
  Uneven rotation in your Air Torque Controller can stem from several causes. Start by checking the supply system to ensure the pressure is correct. If that's not the issue, the actuator may need lubrication; disassemble it, lubricate all sliding parts, and then reassemble. Worn or damaged components can also cause this, so inspect and replace any that are faulty. Ensure the control system components are correctly assembled. If the actuator is mounted on a valve, consult the valve documentation and contact the manufacturer for assistance.
R
Ronald MorrisonAug 29, 2025
How to fix incomplete rotation of Air Torque AT351U Controller?
- E
  ellisjimmyAug 29, 2025
  Incomplete rotation of your Air Torque Controller can occur due to several reasons. First, ensure the stroke is correctly adjusted. Next, disassemble the actuator and check for any foreign objects inside. Also, incorrect assembly after maintenance can cause this issue, so disassemble and reassemble the actuator correctly. Make sure the control system components are correctly assembled. If the actuator is mounted on a valve, check the valve documentation and contact the manufacturer.

Summary

Safety Instructions and Measures

Intended Use and Misuse

Defines product purpose and reasonably foreseeable misuse scenarios.

Personnel Qualifications and Responsibilities

Outlines required operator skills and employer duties for safe operation.

General Safety Precautions and Standards

Safety Hazard Notes

Notes on Severe Personal Injury

Details risks of severe injury and necessary precautions.

Notes on Personal Injury

Highlights risks of personal injury from operational hazards.

Markings on the Device

Design and Principle of Operation

Direction of Action and Fail Positions

Mounting and Assembly

Installation Preparation

Start-up Procedures

Initial Startup and Connection

Operation Guidelines

Operating the Actuator

Malfunction Troubleshooting

Common Issues and Resolutions

Lists malfunctions, possible causes, and recommended repair actions.

Service Procedures

Disassembly Steps

Details steps for removing position indicators, stop caps, and end caps.

Pistons and Drive Shaft Disassembly

Instructions for dismantling pistons and the drive shaft.

Service Operations and Reassembly Overview

Drive Shaft and Pistons Reassembly

Guides for reassembling the drive shaft and pistons.

End Caps Reassembly

Stroke Adjustment Procedures

Details how to adjust the actuator's stroke for open and close positions.

Mounting Actuator Over Valve

Refers back to the procedure for mounting the actuator onto the valve.

Decommissioning and Removal

Repairs and Disposal

Repair and After-Sales Service

Guidance on handling defective units and contacting support for repairs.

Summary

Safety Instructions and Measures

Intended Use and Misuse

Defines product purpose and reasonably foreseeable misuse scenarios.

Personnel Qualifications and Responsibilities

Outlines required operator skills and employer duties for safe operation.

General Safety Precautions and Standards

Safety Hazard Notes

Notes on Severe Personal Injury

Details risks of severe injury and necessary precautions.

Notes on Personal Injury

Highlights risks of personal injury from operational hazards.

Markings on the Device

Design and Principle of Operation

Direction of Action and Fail Positions

Mounting and Assembly

Installation Preparation

Start-up Procedures

Initial Startup and Connection

Operation Guidelines

Operating the Actuator

Malfunction Troubleshooting

Common Issues and Resolutions

Lists malfunctions, possible causes, and recommended repair actions.

Service Procedures

Disassembly Steps

Details steps for removing position indicators, stop caps, and end caps.

Pistons and Drive Shaft Disassembly

Instructions for dismantling pistons and the drive shaft.

Service Operations and Reassembly Overview

Drive Shaft and Pistons Reassembly

Guides for reassembling the drive shaft and pistons.

End Caps Reassembly

Stroke Adjustment Procedures

Details how to adjust the actuator's stroke for open and close positions.

Mounting Actuator Over Valve

Refers back to the procedure for mounting the actuator onto the valve.

Decommissioning and Removal

Repairs and Disposal

Repair and After-Sales Service

Guidance on handling defective units and contacting support for repairs.

Air Torque AT351U Specifications

General

Brand	Air Torque
Model	AT351U
Category	Controller
Language	English

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