1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the FESTO DNCT-32-215-PPV-A-S6 Tandem Cylinder. This product is a high-quality pneumatic component designed for industrial applications requiring precise and powerful linear motion. Please read this manual thoroughly before using the product.

Figure 1: Front view of the FESTO DNCT-32-215-PPV-A-S6 Tandem Cylinder. This image displays the main body of the cylinder, highlighting its robust construction and the piston rod extending from one end.
2. Safety Information
Always observe the following safety precautions to prevent injury and damage to the equipment:
- Ensure the pneumatic system is depressurized before performing any installation, maintenance, or troubleshooting.
- Wear appropriate personal protective equipment (PPE), including eye protection and gloves.
- Only qualified personnel should install, operate, or maintain this equipment.
- Do not exceed the maximum operating pressure specified for the cylinder.
- Protect the cylinder from mechanical damage, excessive heat, and corrosive environments.
- Secure the cylinder properly to prevent unintended movement during operation.
3. Setup and Installation
Proper installation is crucial for the performance and longevity of the tandem cylinder.
3.1 Unpacking and Inspection
Upon receiving the cylinder, carefully unpack it and inspect for any signs of shipping damage. Verify that all components are present according to the packing list.
3.2 Mounting
The DNCT-32-215-PPV-A-S6 cylinder can be mounted using various accessories (not included). Ensure the mounting surface is flat, rigid, and capable of supporting the cylinder's weight and reaction forces. Use appropriate fasteners and torque settings to secure the cylinder firmly.
3.3 Pneumatic Connections
Connect the air supply lines to the cylinder's ports. Ensure all connections are clean, free of debris, and properly sealed to prevent leaks. Use appropriate tubing and fittings for the operating pressure. The cylinder typically has two main ports for extension and retraction, and potentially additional ports for cushioning or sensing.

Figure 2: Side view of the FESTO DNCT-32-215-PPV-A-S6 Tandem Cylinder. This angle provides a clearer view of the cylinder's side profile, including the FESTO branding and mounting features.
4. Operating Instructions
The FESTO DNCT-32-215-PPV-A-S6 is a double-acting tandem cylinder, meaning it uses compressed air to extend and retract the piston rod, providing increased force compared to a standard cylinder of the same bore size.
4.1 Air Supply
Ensure a clean, dry, and regulated compressed air supply is connected to the system. The recommended operating pressure range is specified in the technical specifications section.
4.2 Control
The cylinder's movement is controlled by a directional control valve (not included) that directs compressed air to the appropriate ports. For extension, air is supplied to the extension port; for retraction, air is supplied to the retraction port. The tandem design means both piston sections operate in series to multiply the output force.
4.3 Cushioning Adjustment
The cylinder features adjustable pneumatic cushioning at both ends (PPV-A). To adjust cushioning, turn the adjustment screws located at the end caps. Turn clockwise for increased cushioning (slower end-of-stroke) and counter-clockwise for decreased cushioning (faster end-of-stroke). Adjust carefully to prevent hard impacts and reduce noise.
5. Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of the cylinder.
5.1 Routine Checks
- Periodically check for air leaks at connections and seals using a leak detection spray.
- Inspect the piston rod for damage, scratches, or corrosion.
- Verify that mounting bolts are secure and properly torqued.
- Check the cushioning adjustment for proper operation.
5.2 Cleaning
Keep the cylinder exterior clean and free from dust, dirt, and corrosive substances. Use a soft cloth and mild cleaning agents. Do not use abrasive cleaners or solvents that could damage seals or surfaces.
5.3 Lubrication
FESTO cylinders are typically designed for operation with or without lubrication. If the system uses lubricated air, ensure a suitable pneumatic lubricant is used. If operating without lubrication, do not introduce oil into the system later, as this can wash away the factory-applied grease.
5.4 Seal Replacement
Over time, seals may wear out. If excessive leakage or reduced performance is observed, contact a qualified service technician or FESTO authorized distributor for seal replacement using genuine FESTO spare parts.
6. Troubleshooting
This section provides guidance for common issues. For complex problems, consult a qualified technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Cylinder does not move or moves slowly | Insufficient air pressure; Air leaks; Obstructed air lines; Faulty control valve; Excessive load | Check air supply and regulator; Inspect for leaks; Clear obstructions; Check/replace valve; Reduce load |
| Air leakage from cylinder or ports | Loose fittings; Damaged seals; Damaged tubing | Tighten fittings; Replace worn seals; Replace damaged tubing |
| Piston rod sticks or moves erratically | Misalignment; Contamination; Worn rod bearing/seals | Check alignment; Clean cylinder; Replace worn components |
| Cushioning ineffective or too harsh | Incorrect cushioning adjustment; Damaged cushioning seals | Adjust cushioning screws; Inspect/replace cushioning seals |
7. Specifications
Key technical specifications for the FESTO DNCT-32-215-PPV-A-S6 Tandem Cylinder:
- Model Number: DNCT-32-215-PPV-A-S6
- Manufacturer: FESTO
- Type: Tandem Cylinder, Double-Acting
- Cushioning: Adjustable pneumatic cushioning at both ends (PPV-A)
- Package Dimensions: Approximately 11.81 x 11.81 x 11.81 inches (30 x 30 x 30 cm)
- Weight: Approximately 10.58 ounces (0.3 kg)
- Date First Available: August 24, 2024
Note: For detailed technical drawings, operating pressure ranges, and material specifications, please refer to the official FESTO product datasheet for model DNCT-32-215-PPV-A-S6.
8. Warranty and Support
For warranty information, please refer to the terms and conditions provided by FESTO or your authorized distributor at the time of purchase. FESTO products are manufactured to high standards, and specific warranty details may vary by region and product type.
For technical support, spare parts, or service inquiries, please contact your local FESTO representative or the supplier from whom you purchased the product. Provide the full model number (DNCT-32-215-PPV-A-S6) and serial number (if applicable) when seeking assistance.
You can find more information and contact details on the official FESTO website: www.festo.com





