Introduction
The True 842132 Overload Protector is a critical safety component designed for use in True refrigeration systems. Its primary function is to protect the compressor motor from damage caused by excessive current draw, which can occur due to various operational issues such as low voltage, high head pressure, or mechanical binding. By automatically disconnecting power when an overload condition is detected, this device helps to prevent costly repairs and extend the lifespan of the refrigeration unit. This manual provides essential information for the proper handling, installation, and understanding of this component.
Safety Information
Always prioritize safety when working with electrical components and refrigeration equipment. Failure to follow these safety guidelines can result in electric shock, personal injury, or damage to equipment.
- Disconnect Power: Always ensure that the main power supply to the refrigeration unit is disconnected and locked out before attempting any installation, maintenance, or inspection.
- Qualified Personnel: Installation and servicing should only be performed by qualified and certified refrigeration technicians or electricians.
- Proper Tools: Use appropriate insulated tools for electrical work.
- Component Compatibility: Ensure that the replacement overload protector is the correct part number (842132) and is compatible with your specific True refrigeration model.
- Avoid Contact: Do not touch electrical terminals or wiring with bare hands when power is connected.
Product Overview
Figure 1: True 842132 Overload Protector
This image displays the True 842132 Overload Protector, a black cylindrical component with a curved black wire connecting two terminals. One terminal features a screw and nut for secure attachment, while the other is a spade connector. The component is designed to protect refrigeration compressors from electrical overloads.
Installation
The True 842132 Overload Protector is typically installed directly onto the compressor's electrical terminals. The following steps outline a general installation procedure. Always refer to the specific service manual for your True refrigeration unit for detailed, model-specific instructions.
- Power Disconnection: Ensure the refrigeration unit is completely disconnected from its power source. Verify with a voltmeter.
- Access Compressor: Locate and access the compressor compartment, typically at the bottom or rear of the unit.
- Identify Overload: Identify the existing overload protector, usually a small, round or rectangular component attached to one of the compressor's electrical terminals.
- Remove Old Component: Carefully disconnect the wiring from the old overload protector and remove it from the compressor terminal. Note the orientation and connection points.
- Install New Overload: Attach the new True 842132 Overload Protector to the correct compressor terminal. Ensure a secure and proper fit.
- Reconnect Wiring: Reconnect the electrical wiring to the new overload protector, ensuring all connections are tight and correct according to the original configuration.
- Secure Components: Ensure all components are securely mounted and wiring is routed to prevent pinching or damage.
- Restore Power: Once installation is complete and verified, restore power to the refrigeration unit. Monitor the unit's operation for proper function.
Important: If you are unsure about any step, consult a qualified technician. Incorrect installation can lead to equipment failure or safety hazards.
Function and Operation
The True 842132 Overload Protector operates as a thermal-sensitive switch. It is designed to monitor the current flowing to the compressor motor. If the current exceeds a safe operating limit for a sustained period, the internal bimetallic strip or heating element in the overload protector will heat up and trip, opening the electrical circuit to the compressor. This action prevents the compressor motor from overheating and sustaining permanent damage. Once the overload protector cools down, it will automatically reset, allowing the compressor to attempt to restart. Repeated tripping indicates an underlying issue that requires investigation and repair.
Maintenance
The True 842132 Overload Protector is a sealed component and does not require routine maintenance or lubrication. However, periodic visual inspection is recommended as part of a comprehensive refrigeration system maintenance schedule.
- Visual Inspection: During routine service, inspect the overload protector for any signs of physical damage, such as cracks, discoloration from overheating, or loose connections.
- Cleanliness: Ensure the area around the overload protector is free from dust, debris, or moisture that could impede its function or cause electrical issues.
- Connection Integrity: Verify that all electrical connections to the overload protector are secure and free from corrosion.
If any damage or signs of overheating are observed, the overload protector should be replaced by a qualified technician.
Troubleshooting
If your refrigeration unit is experiencing issues related to the compressor, the overload protector may be involved. Here are some common scenarios and potential causes:
- Compressor Not Starting / Frequent Tripping:
- Overload Protector Failure: The overload protector itself may be faulty and tripping prematurely or failing to reset.
- Compressor Issues: The compressor motor may be drawing excessive current due to internal mechanical problems (e.g., worn bearings, seized components) or electrical winding issues.
- Refrigeration System Problems: High head pressure, low refrigerant charge, or restricted airflow over the condenser can cause the compressor to work harder and draw more current.
- Electrical Supply Issues: Low voltage or unstable power supply can cause the compressor to draw higher current.
- Starting Components: Faulty start relay or start capacitor can prevent the compressor from starting correctly, leading to overload tripping.
- Compressor Runs Continuously: While less common for an overload protector issue, if the overload protector is bypassed or faulty and not tripping when it should, it could lead to compressor overheating and damage.
Note: Troubleshooting refrigeration systems requires specialized knowledge and tools. It is strongly recommended to contact a qualified refrigeration technician for diagnosis and repair.
Specifications
| Attribute | Value |
|---|---|
| Brand | True |
| Model Number | 842132 |
| Part Number | 842132 |
| Item Weight | Approximately 0.16 ounces |
| Country Of Origin | Slovakia |
| Product Dimensions (Approximate) | 6 x 4 x 4 inches (packaging dimensions) |
Warranty and Support
For information regarding the warranty of your True 842132 Overload Protector, please refer to the documentation provided with your True refrigeration unit or contact True Refrigeration directly. Warranty terms typically cover manufacturing defects for a specified period.
For technical support, replacement parts, or service inquiries, please contact True Refrigeration's customer service or an authorized True service provider. When contacting support, have your refrigeration unit's model and serial number, along with the part number (842132) of the overload protector, readily available.
True Refrigeration Contact Information:
Please visit the official True Refrigeration website for the most current contact details, service locator, and support resources.
