Azbil AMT - User Manual

Questions and Answers:

J
Jenna SummersAug 10, 2025
What to do if the Azbil Control Unit valve operation is sluggish or inoperative?
- S
  sophia77Aug 10, 2025
  Sluggish or inoperative valve operation in your Azbil Control Unit can arise from a few common issues. First, inspect the piping and actuator for any air leaks. If found, address these leaks promptly. Additionally, check for any foreign matter that may be lodged in the guide section of the valve plug and remove it. If the gland packing is aged and hardened, causing increased hysteresis, it should be replaced. Lastly, a malfunctioning positioner can also cause these symptoms; test the positioner by operating it directly on a known, normally operating air supply.
D
Donald DavisAug 15, 2025
How to fix a fluid leak from the gland section of the Azbil Control Unit?
- S
  Scott WilsonAug 15, 2025
  If you notice a fluid leak from the gland section of your Azbil Control Unit, start by checking the packing flange to ensure it is not loose; tighten it if necessary. Also, verify that there is sufficient grease; add more if needed. Finally, inspect the valve shaft for any damage and replace it if damage is found.
C
Charlene HamiltonAug 20, 2025
What to do if there's a liquid leak from the gasket section in my Azbil Control Unit?
- J
  Jasmin MercadoAug 20, 2025
  If you observe a liquid leak from the gasket section of your Azbil Control Unit, begin by checking the bonnet nuts to ensure they are tight; tighten any loose nuts. Next, inspect the gasket itself for any defects such as deformation or damage, and replace the gasket if it is defective.
C
Cynthia PayneAug 26, 2025
How to stop the vibration of the Azbil AMT Control Unit valve?
- H
  Holly MurrayAug 26, 2025
  If the Azbil Control Unit valve is vibrating, make sure that the piping is securely fixed. You should also check for other sources of vibration, check the parts and replace them as required, check for change in process fluid flow conditions (change in restriction orifice, Cv value, etc.), and check for change in plug configuration (change in flow control characteristics).
J
Jason ColeAug 30, 2025
What to do if the Azbil Control Unit leaks even when the valve is closed?
- K
  Kimberly ClarkeAug 30, 2025
  If there is a large flow leak to the downstream side of your Azbil Control Unit even when the valve plug is in the closed position, check for air leaks at the actuator section. Also, apply the air supply pressure or atmospheric pressure to the actuator. Check whether the valve plug is actually in the closed position or not. You should also check the plug seat ring for corrosion and erosion, and the guide sections for binding.

Azbil AMT Specifications

General

Category	Control Unit
Protection Class	IP20
Manufacturer	Azbil
Power Consumption	5 W
Storage Temperature	-20 to 70 °C

Summary

General Information

Scope of Manual

Manual covers instructions for Three-way Control Valves, Model AMT Mixing Valves and HDT Diverting Valves.

Control Valve Components

Each control valve has two major components: a valve body and an actuator.

Control Valve Structures and Identification

Valve Structures

Describes the structures of typical CV3000 Series control valves with diagrams and parts list.

Valve Nameplate

Details the information found on the control valve nameplate and its importance.

Installation Procedures

Lifting Loads of Eyebolts

Table showing allowable maximum lifting loads of eyebolts for different actuator models.

Installing Valve in Process Pipe

Step-by-step instructions for installing the valve into the process pipe.

Post-Installation Checks

Checks to perform after installation and before initial operation, including tightening torques.

Inspection and Maintenance

Gland Tightening

Procedure for tightening the gland, to be done every 6 months.

Gland Lubrication

Procedure for lubricating the gland, to be done every 6 months.

Valve Position Hunting Check

Instructions to check for valve position hunting, referring to troubleshooting.

Abnormal Noise and Vibration Check

Instructions to check for abnormal noise and vibration, referring to troubleshooting.

Disassembly and Assembly

Detaching Actuator from Valve Body

Procedure for detaching the actuator from the valve body, including precautions.

Disassembly and Assembly of Valve Body

Detailed procedures for disassembling and assembling the valve body for AMT (Mixing) Type.

Disassembly and Assembly of Actuator

General procedure for disassembling and assembling the actuator for overhaul or modification.

Disassembly and Assembly of PSA 1 Actuator

Disassembly procedures for PSA 1 actuator, direct and reverse action models.

Disassembly and Assembly of HA2, HA3, or HA4 Actuator

Disassembly procedures for HA2, HA3, HA4 actuators (Direct Action Type).

Adjustment and Calibration

AMT Type Lift Adjustment

Lift adjustment procedures for AMT Type control valves (Mixing Type).

HDT Type Lift Adjustment

Lift adjustment procedures for HDT Type control valves (Diverting Type).

Actuator Type and Range Modifications

Direct;Reverse Action Type Conversion

Lists parts needed to convert between direct and reverse action types.

Stroke and Range Spring Change

Lists parts required for changing stroke and spring ranges for HA actuators.

Top Handwheel Operation

PSA1 Actuator Top Handwheel Operation

Operating instructions for PSA1 actuator with top handwheel.

HA2, HA3, HA4 Actuator Top Handwheel Operation

Operating instructions for HA2, HA3, HA4 actuators with top handwheel.

HA2, HA3, HA4 Actuator Top Handwheel Disassembly;Assembly

Disassembly and assembly procedures for HA2, HA3, HA4 actuators' top handwheel.

Side Handwheel Operation

Side Handwheel Installation

Steps to install the side handwheel set and mounting accessories onto the actuator.

Side Handwheel Operation

Procedure for manually operating the actuator using the side handwheel.

Side Handwheel Disassembly

Procedure for disassembling the side handwheel unit from the actuator.

Mechanical Stopper Adjustment

MIN. Stopper Adjustment

Procedure for adjusting the MIN. stopper to limit valve opening.

MAX. Stopper Adjustment

Procedure for adjusting the MAX. stopper to limit valve opening.

Dual MIN. MAX. Stopper Adjustment

Instructions for performing dual MIN/MAX stopper adjustments.

Troubleshooting Guide

Unstable Valve Operation

Symptoms, causes, and remedies for unstable valve operation.

Valve Vibration

Symptoms, causes, and remedies for valve vibration issues.

Sluggish or Inoperative Valve

Symptoms, causes, and remedies for sluggish or inoperative valves.

Gland Section Fluid Leak

Causes and remedies for fluid leaks from the gland section.

Gasket Section Liquid Leak

Causes and remedies for liquid leaks from the gasket section.

Downstream Leaks When Closed

Troubleshooting for large downstream leaks when valve is closed.

Recommended Spare Parts

Valve Body Spare Parts

Recommended parts to replace when the valve body is disassembled.

Actuator Spare Parts

Recommended parts to replace periodically or upon disassembly.

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Azbil AMT - User Manual

Table of Contents

Questions and Answers:

Azbil AMT Specifications

Summary

General Information

Scope of Manual

Control Valve Components

Control Valve Structures and Identification

Valve Structures

Valve Nameplate

Installation Procedures

Lifting Loads of Eyebolts

Installing Valve in Process Pipe

Post-Installation Checks

Inspection and Maintenance

Gland Tightening

Gland Lubrication

Valve Position Hunting Check

Abnormal Noise and Vibration Check

Disassembly and Assembly

Detaching Actuator from Valve Body

Disassembly and Assembly of Valve Body

Disassembly and Assembly of Actuator

Disassembly and Assembly of PSA 1 Actuator

Disassembly and Assembly of HA2, HA3, or HA4 Actuator

Adjustment and Calibration

AMT Type Lift Adjustment

HDT Type Lift Adjustment

Actuator Type and Range Modifications

Direct;Reverse Action Type Conversion

Stroke and Range Spring Change

Top Handwheel Operation

PSA1 Actuator Top Handwheel Operation

HA2, HA3, HA4 Actuator Top Handwheel Operation

HA2, HA3, HA4 Actuator Top Handwheel Disassembly;Assembly

Side Handwheel Operation

Side Handwheel Installation

Side Handwheel Operation

Side Handwheel Disassembly

Mechanical Stopper Adjustment

MIN. Stopper Adjustment

MAX. Stopper Adjustment

Dual MIN. MAX. Stopper Adjustment

Troubleshooting Guide

Unstable Valve Operation

Valve Vibration

Sluggish or Inoperative Valve

Gland Section Fluid Leak

Gasket Section Liquid Leak

Downstream Leaks When Closed

Recommended Spare Parts

Valve Body Spare Parts

Actuator Spare Parts

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