1. Introduction
This manual provides essential information for the safe and effective use of the Genteq Z50S3710M 10 uF MFD x 370 VAC Replacement Capacitor. This component is designed for various electrical applications, primarily as a motor-run capacitor in HVAC systems and other equipment. Please read this manual thoroughly before installation or operation.
2. Safety Information
WARNING: Electrical components can cause serious injury or death if not handled properly. Always follow these safety guidelines:
- Professional Installation Recommended: Installation should only be performed by a qualified electrician or HVAC technician.
- Disconnect Power: Always ensure that the power supply to the equipment is completely disconnected and locked out before attempting any installation, maintenance, or inspection.
- Discharge Capacitors: Capacitors can store a dangerous electrical charge even after power is disconnected. Always discharge the capacitor safely using appropriate tools before handling.
- Wear Personal Protective Equipment (PPE): Use insulated gloves, safety glasses, and other necessary PPE.
- Verify Specifications: Ensure the replacement capacitor's specifications (capacitance, voltage) match or exceed the original component's requirements.
- Avoid Physical Damage: Do not drop, puncture, or otherwise physically damage the capacitor. Damaged capacitors can fail catastrophically.
3. Product Overview
The Genteq Z50S3710M is a high-quality, oval-shaped motor-run capacitor designed for reliable performance in demanding applications. It is a direct replacement for many existing units, often requiring no wiring changes or adapters.
- Capacitance: 10 microfarads (uF/MFD)
- Voltage Rating: 370 VAC
- Shape: Oval
- Material: Copper
- Origin: Made in North America

Figure 3.1: The Genteq Z50S3710M capacitor shown alongside its original packaging. This image highlights the product's appearance and branding.

Figure 3.2: A clear front view of the Genteq Z50S3710M capacitor, displaying its specifications and terminal connections.

Figure 3.3: An image of the "Genuine Genteq Capacitor" stamp, indicating authenticity and quality assurance.
4. Setup and Installation
The Genteq Z50S3710M capacitor is designed as a direct "drop-in" replacement, meaning it typically requires no wiring changes or adapters for compatible systems. However, proper installation is critical for safety and performance.
- Preparation: Before beginning, ensure all power to the appliance or system is completely disconnected at the circuit breaker and verified with a voltage tester.
- Discharge Old Capacitor: Safely discharge the old capacitor using a resistor or insulated screwdriver with an insulated handle across the terminals. A spark indicates a charge was present. Repeat until no spark occurs.
- Note Wiring: Carefully note or photograph the wiring connections to the old capacitor before removal.
- Remove Old Capacitor: Disconnect the wires and remove the old capacitor from its mounting bracket.
- Install New Capacitor: Place the new Genteq Z50S3710M capacitor into the mounting bracket.
- Connect Wiring: Reconnect the wires to the new capacitor's terminals exactly as they were on the old unit. Ensure connections are secure.
- Secure Capacitor: Ensure the capacitor is firmly secured in its mounting.
- Restore Power: Once installation is complete and all connections are secure, restore power to the system.
- Test Operation: Test the appliance or system to ensure proper function.
If you are unsure about any step, consult a qualified professional.
5. Operating Principles
The Genteq Z50S3710M is a motor-run capacitor. Its primary function is to provide a continuous phase shift to the auxiliary winding of an AC motor, creating a rotating magnetic field that allows the motor to operate efficiently. Unlike start capacitors, run capacitors are designed for continuous duty and remain in the circuit during motor operation. Proper capacitance (10 uF in this case) is crucial for the motor to achieve its rated speed and efficiency.
6. Maintenance
Capacitors like the Genteq Z50S3710M are generally maintenance-free components. However, periodic inspection can help identify potential issues before they lead to complete failure.
- Visual Inspection: Annually, or during routine system maintenance, visually inspect the capacitor for signs of swelling, bulging, leakage, or corrosion around the terminals. Any of these signs indicate a failing capacitor that should be replaced.
- Cleanliness: Ensure the area around the capacitor is free from dust and debris, which can impede heat dissipation.
- Professional Check: If you suspect a capacitor issue, have a qualified technician test its capacitance using a multimeter with a capacitance function.
7. Troubleshooting
A failing or failed capacitor can manifest in several ways, particularly in motor-driven systems. Here are common symptoms and potential solutions:
| Symptom | Possible Cause | Solution |
|---|---|---|
| Motor hums but does not start (or starts slowly). | Failed run capacitor. | Replace the capacitor. |
| Motor runs, but draws excessive current or overheats. | Degraded or incorrect capacitance. | Test capacitor capacitance; replace if out of specification. |
| Visible bulging, leaking, or burning smell from capacitor. | Catastrophic capacitor failure. | Immediately disconnect power and replace the capacitor. |
Important: Always ensure power is disconnected and the capacitor is discharged before attempting any troubleshooting or replacement. If you are not comfortable performing these tasks, contact a certified technician.
8. Specifications
Detailed technical specifications for the Genteq Z50S3710M capacitor:
| Attribute | Value |
|---|---|
| Model Number | Z50S3710M |
| Capacitance | 10 Microfarad (uF/MFD) |
| Operating Voltage | 370 Volts AC (VAC) |
| Maximum Voltage | 370 Volts AC (VAC) |
| Shape | Oval |
| Material | Copper |
| Manufacturer | Genteq |
| ASIN | B00VS20SFQ |
| Date First Available | April 5, 2015 |

Figure 8.1: Dimensional drawing of the Genteq Z50S3710M capacitor, showing its height, width, and depth for proper fitment.

Figure 8.2: Diagram explaining the Final Electrical Test (FET) paint marking system used on capacitors to indicate capacitance value relative to nominal tolerance.
9. Warranty and Support
Specific warranty information for the Genteq Z50S3710M capacitor may vary depending on the retailer and date of purchase. Please refer to your purchase documentation or contact the seller directly for details regarding warranty coverage and claims.
For technical support or further inquiries, it is recommended to contact Genteq customer service or a qualified HVAC/electrical professional.
- Manufacturer: Genteq
- Contact: Refer to Genteq's official website or your product supplier for contact information.



