1. Introduction
This manual provides essential instructions for the installation, operation, and maintenance of the Fruhdi Power Recliner Linear Actuator, Model ST03-29-394.212-8. This linear actuator is designed as a replacement part for electric sofas, massage chairs, and similar applications, including specific Golden Technologies PR-458 lift chairs, provided the original motor model matches.
Before proceeding with installation or operation, please read this manual thoroughly to ensure safe and correct usage.
2. Safety Information
- Assembly Required: This product requires proper assembly. Ensure all connections are secure before use.
- Pre-Installation Check: Before ordering or installing this motor, always check the label on your existing unit to confirm the model number (ST03-29-394.212-8) matches.
- Troubleshooting: Prior to replacing the motor, troubleshoot the existing switch/remote control and power supply to rule out other potential issues.
- Electrical Safety: Ensure the power supply is disconnected before performing any installation or maintenance. Only connect to appropriate power sources as specified.
- Professional Installation: If you are unsure about any steps, consult a qualified technician.
3. Product Overview
The Fruhdi ST03-29-394.212-8 Linear Actuator is a robust replacement motor manufactured by Chendi, designed for various power recliner and lift chair applications. It features a specific stroke length and installation dimensions to ensure compatibility with designated furniture models.
Figure 3.1: Overall view of the Fruhdi Linear Actuator ST03-29-394.212-8. This image displays the complete unit, including the motor housing, linear shaft, and connecting cables.
Key Features:
- Model: ST03-29-394.212-8 (Manufactured by Chendi)
- Stroke: 394mm
- Minimum Install Dimension: 212mm
- Power Connection: 2-pin flat round connector for power transformer.
- Control Connection: 5-pin connector for hand control/remote.
- Material: Aluminum construction for durability.
Figure 3.2: Close-up of the product label on the linear actuator motor. This label displays critical technical data including the model number, rated voltage (DC29V), rated input (55W), max load (6000N), and duty cycle (Max10% Max2min/18min).
4. Setup and Installation
Follow these steps carefully for proper installation of the linear actuator. Ensure the power to the furniture is disconnected before beginning.
- Verify Compatibility: Confirm that the model number on your existing actuator matches ST03-29-394.212-8.
- Disconnect Power: Unplug the recliner or lift chair from the wall outlet.
- Remove Old Actuator:
- Locate the existing linear actuator under the furniture.
- Disconnect the 2-pin power transformer connection and the 5-pin hand control plug connection.
- Carefully unbolt or unclip the actuator from its mounting points on the furniture frame. Note the orientation for reinstallation.
- Install New Actuator:
- Position the new Fruhdi ST03-29-394.212-8 actuator in the same orientation as the old one.
- Securely attach the actuator to the furniture frame using the appropriate bolts or clips. Ensure all mounting points are firm.
- Connect the 2-pin flat round power transformer cable to the power supply.
- Connect the 5-pin hand control plug to the hand control unit.
- Test Functionality: Once all connections are made and the actuator is securely mounted, plug the furniture back into the wall outlet. Test the recliner's functions using the hand control to ensure smooth operation.
Figure 4.1: View of the motor body showing the power and control cable connections. The 2-pin flat round connector is for the power transformer, and the 5-pin connector is for the hand control.
Figure 4.2: Close-up of the linear actuator's end mounting point. This shows how the actuator connects to the furniture mechanism.
5. Operating Instructions
After successful installation, operate the recliner or lift chair using its standard hand control. The linear actuator facilitates the smooth movement of the furniture's reclining or lifting mechanisms.
- Reclining: Press and hold the appropriate button on your hand control to extend the actuator, moving the chair into a reclined position.
- Upright/Lift: Press and hold the other button on your hand control to retract the actuator, returning the chair to an upright position or initiating the lift function.
- Stopping Movement: Release the button at any desired position to stop the actuator's movement.
Important: Do not exceed the maximum load capacity of your furniture or the actuator. Avoid continuous operation for extended periods to prevent overheating. Refer to the duty cycle specified on the product label (Max10% Max2min/18min).
6. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your linear actuator.
- Cleaning: Keep the actuator free from dust and debris. Wipe the exterior with a dry, soft cloth. Do not use harsh chemicals or abrasive cleaners.
- Inspection: Periodically inspect the actuator and its mounting points for any signs of wear, damage, or loose connections.
- Lubrication: The linear actuator is generally maintenance-free regarding internal lubrication. Do not attempt to lubricate internal components unless specifically instructed by the manufacturer.
- Cable Integrity: Check power and control cables for fraying, cuts, or damage. Replace damaged cables immediately.
Caution: Always disconnect power before performing any maintenance or inspection.
7. Troubleshooting
If your recliner or lift chair is not functioning correctly after installing the new actuator, refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Actuator does not move. | No power supply. Loose power connection. Faulty hand control. Overload protection activated. | Ensure the furniture is plugged into a working outlet. Check the 2-pin power transformer connection. Test the hand control (if possible, with another known working actuator or power supply). Disconnect power for a few minutes, then reconnect. Reduce load if applicable. |
| Actuator moves intermittently. | Loose control connection. Damaged control cable. | Check the 5-pin hand control plug connection. Inspect the hand control cable for damage. |
| Unusual noise during operation. | Improper mounting. Obstruction in mechanism. | Verify the actuator is securely mounted and aligned correctly. Check for any objects obstructing the movement of the recliner mechanism. |
| Actuator overheats. | Continuous operation. Exceeding duty cycle. | Allow the actuator to cool down. Adhere to the specified duty cycle (Max 2 minutes continuous operation, then 18 minutes rest). |
If the problem persists after attempting these solutions, contact customer support or a qualified technician.
8. Specifications
| Brand: | Fruhdi |
| Model: | ST03-29-394.212-8 |
| Manufacturer: | Chendi |
| Part Number: | ST03 |
| Item Type: | Recliner Motor / Linear Actuator |
| Material: | Aluminum |
| Item Weight: | 2.36 Kilograms |
| Stroke: | 394mm |
| Minimum Install Dimension: | 212mm |
| Rated Voltage: | DC29V |
| Rated Input: | 55W |
| Max Load: | 6000N |
| Duty Cycle: | Max10% Max2min/18min |
| Included Components: | Parts (Actuator unit) |
9. Warranty Information
Specific warranty details for the Fruhdi Linear Actuator Model ST03-29-394.212-8 are not provided in this document. Please refer to the product packaging, purchase documentation, or contact the seller directly for warranty terms and conditions.
Protection plans may be available for purchase separately. Check with your retailer for options such as 3-Year or 4-Year Protection Plans.
10. Customer Support
For further assistance, technical support, or inquiries regarding your Fruhdi Linear Actuator, please contact the seller or manufacturer through the platform where the product was purchased.
When contacting support, please have your product model number (ST03-29-394.212-8) and purchase details readily available.