UpStart Components 35/5 MFD 370 Volt Dual Round Run Capacitor User Manual

1. Introduction

This manual provides essential information for the UpStart Components 35/5 MFD 370 Volt Dual Round Run Capacitor, model CAP-97F9834-DL1345. This component is designed as a direct replacement for the Rheem/Ruud uAND-024JAZ capacitor, crucial for maintaining the optimal performance of various HVAC systems.

A run capacitor is an electrical component that stores energy and releases it to create a phase shift in the alternating current (AC) supply, which is necessary to start and continuously run electric motors efficiently. This dual-round capacitor is specifically designed for applications requiring two different capacitance values, typically for a compressor and a fan motor within a single unit.

2. Important Safety Information

WARNING: Working with electrical components can be extremely dangerous and may result in severe personal injury, death, or property damage if not performed correctly. Always follow these safety guidelines:

• Professional Installation Recommended: Due to the high voltages involved, installation should only be performed by a qualified HVAC technician or a licensed electrician.
• Disconnect Power: ALWAYS ensure that the main power supply to the HVAC unit is completely disconnected at the circuit breaker or fuse box before attempting any inspection, removal, or installation of the capacitor. Verify with a voltage tester.
• Discharge Capacitor: Capacitors can store a lethal electrical charge even after power is disconnected. Before handling, safely discharge the capacitor using a properly insulated screwdriver with an insulated handle by shorting the terminals. Wear insulated gloves and safety glasses.
• Avoid Contact: Do not touch the terminals of the capacitor with bare hands or uninsulated tools.
• Proper Tools: Use only insulated tools designed for electrical work.
• Environmental Conditions: Ensure the work area is dry and well-lit.

3. Product Overview and Function

The UpStart Components CAP-97F9834-DL1345 is a 35/5 MFD (Microfarad) 370 Volt dual-round run capacitor. It is designed to provide the necessary electrical characteristics for both the compressor and fan motors in compatible HVAC systems.

The '35/5 MFD' rating indicates that the capacitor has two sections: one with a capacitance of 35 microfarads for the compressor motor and another with 5 microfarads for the fan motor. The '370 Volt' rating specifies the maximum voltage the capacitor can safely handle during operation.

Figure 1: UpStart Components 35/5 MFD 370 Volt Dual Round Run Capacitor with its packaging. This image shows the product as it would appear new in its box.

Figure 2: Front view of the capacitor, highlighting the product label with specifications like MFD and voltage ratings.

Figure 3: Angled view of the capacitor, illustrating the multiple terminals at the top for electrical connections.

Figure 4: Top-down view of the capacitor's terminals, showing the distinct connections for different motor windings.

4. Identifying a Faulty Capacitor

A capacitor may need replacement if it exhibits certain physical signs or if the HVAC unit is experiencing specific operational issues. Common indicators of a failing capacitor include:

• Bulging or Swelling: The top or sides of the capacitor appear visibly swollen or bulging.
• Leaking: Oily residue or fluid is visible around the terminals or on the capacitor body.
• No Continuity Across Terminals: When tested with a multimeter, there is no electrical continuity, indicating an open circuit.
• Motor Not Starting: The compressor or fan motor hums but does not start.
• Weak Airflow: The fan motor runs slowly, resulting in reduced airflow.
• Unit Tripping Breaker: A shorted capacitor can cause the unit to draw excessive current and trip the circuit breaker.

5. Choosing the Correct Replacement Capacitor

When selecting a replacement capacitor, it is critical to match the specifications of the original component to ensure proper system operation and safety. Consider the following factors:

• Voltage Rating: The voltage rating of the replacement capacitor must be equal to or higher than the original capacitor. Never use a capacitor with a lower voltage rating. This capacitor is rated for 370 Volts.
• Capacitance (MFD/uF): The capacitance value (measured in microfarads, MFD or uF) must precisely match the original capacitor. This product is a 35/5 MFD capacitor.
• Frequency (Hz): The frequency rating (Hz) should match the original capacitor, typically 50/60 Hz for HVAC applications.
• Terminal Type: Ensure the terminal configuration (e.g., spade terminals) matches the original for proper wiring connections.
• Physical Size and Shape: While not always critical for electrical function, the physical dimensions (round, oval) and size should be considered to ensure the capacitor fits within the available space in the HVAC unit. This is a dual round capacitor.

6. Installation Guide

NOTE: This section provides general guidance. Due to the inherent electrical hazards, installation should only be performed by a qualified professional.

1. Safety First: Turn off all power to the HVAC unit at the main circuit breaker or fuse box. Verify power is off using a voltage meter.
2. Locate Capacitor: Open the access panel of the outdoor unit (condenser) and locate the existing capacitor.
3. Discharge Old Capacitor: Carefully discharge the old capacitor using an insulated screwdriver by shorting the terminals. Hold the screwdriver by its insulated handle and touch the metal shaft across the terminals simultaneously. Repeat for all terminal pairs (Common to Herm, Common to Fan). You may hear a pop or see a spark.
4. Note Wiring: Take a clear photograph or draw a diagram of the existing wiring connections to the capacitor terminals. Note which wire goes to 'Common' (C), 'Herm' (Hermetic/Compressor), and 'Fan' (F).
5. Remove Old Capacitor: Disconnect the wires from the old capacitor. Carefully remove any mounting clamps or straps holding the capacitor in place.
6. Install New Capacitor: Place the new UpStart Components capacitor into the mounting bracket. Secure it firmly.
7. Connect Wiring: Reconnect the wires to the corresponding terminals on the new capacitor, following your diagram or photograph. Ensure connections are secure and tight.
8. Secure Panel: Close and secure the access panel of the HVAC unit.
9. Restore Power: Turn the main power supply back on at the circuit breaker.
10. Test Unit: Test the HVAC unit to ensure it is operating correctly.

7. Inspection and Care

Capacitors are sealed components and do not require routine maintenance. However, periodic visual inspection can help identify potential issues before they lead to system failure.

• Annual Visual Check: During routine HVAC system maintenance, visually inspect the capacitor for any signs of bulging, leaking, or discoloration.
• Cleanliness: Ensure the area around the capacitor is free from dust, debris, or obstructions that could impede airflow or cause overheating.
• Secure Mounting: Verify that the capacitor is securely mounted and not vibrating excessively.

8. Troubleshooting Common Issues

If your HVAC unit is experiencing problems related to motor starting or running, a faulty capacitor is a common culprit. Here are some troubleshooting steps:

• Unit Hums but Doesn't Start: This is a classic symptom of a failed run capacitor. The motor receives power but lacks the necessary phase shift to begin rotation.
• Fan Runs Slowly: If the outdoor fan motor is spinning slowly or not at all, the fan section of the dual capacitor may be failing.
• Compressor Not Engaging: If the compressor is not starting, but the fan is, the compressor section of the capacitor may be faulty.
• Electrical Test: A qualified technician can use a multimeter with capacitance testing capabilities to measure the actual capacitance of the capacitor and compare it to the rated value. A reading significantly lower than the rated MFD indicates a failing capacitor.

If any of these issues are observed, and a faulty capacitor is suspected, it is recommended to replace the component following the safety and installation guidelines.

9. Product Specifications

10. Warranty and Support Information

For specific warranty details, return policies, or technical support regarding your UpStart Components capacitor, please refer to the purchase documentation or contact the seller directly. As a replacement part, warranty coverage typically extends to manufacturing defects.

For further assistance, you may also visit the official UpStart Components website or contact their customer service department through the contact information provided on their packaging or website.