1. Introduction
The ICM Controls ICM856 is a motor hard start kit designed to enhance the starting performance of single-phase Permanent Split Capacitor (PSC) motors. Utilizing Positive Temperature Coefficient (PTC) technology, this device provides a significant increase in starting torque, up to 500%, facilitating reliable motor startup in various applications. It is suitable for PSC motors ranging from 1/2 hp to 10 hp.
Figure 1: ICM Controls ICM856 Motor Hard Start Kit. This image displays the cylindrical hard start kit, primarily black with a blue label visible on the lower portion. The label shows 'CM85' and text indicating it's a 'Relay and Start Capacitor' for PSC units from 1/2 through 10 HP. Wires with connectors extend from the top of the unit.
2. Safety Information
WARNING: Electrical shock hazard. Installation and servicing should only be performed by qualified personnel. Disconnect all power to the unit before installing or servicing this device. Failure to follow these instructions may result in serious injury or death.
- Always ensure power is disconnected at the main breaker before beginning any work.
- Verify voltage and current ratings are compatible with the motor and electrical system.
- Wear appropriate personal protective equipment (PPE), including safety glasses and insulated gloves.
- Do not bypass any safety devices.
3. Specifications
| Feature | Detail |
|---|---|
| Model | ICM856 |
| Item Model Number | 9801883 |
| Application | Single-Phase PSC Motors |
| Horsepower Range | 1/2 hp to 10 hp |
| Torque Multiplier | Up to 500% |
| Technology | Positive Temperature Coefficient (PTC) |
| Dimensions | 6 x 2 x 2 inches |
| Weight | 7.04 ounces |
| Manufacturer | ICM Controls |
4. Installation Instructions
- Power Disconnection: Ensure all power to the motor and associated equipment is completely disconnected at the main electrical panel. Verify with a voltage tester.
- Locate Motor Run Capacitor: Identify the existing run capacitor on the motor. The ICM856 is designed to work in parallel with this component.
- Wiring: Connect the two wires from the ICM856 in parallel with the motor's run capacitor. This typically involves connecting one wire from the ICM856 to each of the two terminals of the run capacitor. Refer to the motor's wiring diagram for specific connections.
- Secure Device: Mount the ICM856 securely within the motor's electrical compartment, ensuring it does not interfere with moving parts or other electrical components.
- Verify Connections: Double-check all wiring connections for tightness and correct polarity.
- Restore Power: Once installation is complete and verified, restore power to the unit.
- Test Operation: Observe the motor's startup. It should start more quickly and smoothly.
Note: The ICM856 is intended for use only on PSC units. Do not remove any original start components unless specifically instructed by the motor manufacturer.
5. Operation
The ICM856 operates automatically upon motor startup. When the motor attempts to start, the PTC device within the ICM856 provides an additional surge of current to the motor's start winding, significantly boosting the initial torque. As the motor reaches operating speed, the PTC device's resistance increases rapidly, effectively removing itself from the circuit, allowing the motor to run efficiently on its run capacitor. This process is seamless and requires no user intervention after installation.
6. Maintenance
The ICM856 is a solid-state device and generally requires no routine maintenance. However, periodic inspection of the wiring connections is recommended to ensure they remain secure and free from corrosion.
- Annually inspect all wiring for signs of wear, fraying, or loose connections.
- Ensure the device is free from excessive dust, dirt, or moisture accumulation.
- If the motor exhibits starting issues after installation, first check the ICM856's connections before troubleshooting other motor components.
7. Troubleshooting
- Motor Fails to Start:
- Verify all power connections are secure and correct.
- Ensure the motor's run capacitor is functioning correctly.
- Check for proper voltage supply to the motor.
- Confirm the ICM856 is correctly wired in parallel with the run capacitor.
- Motor Starts Slowly or with Difficulty:
- Re-check all wiring connections.
- Ensure the ICM856 is compatible with the motor's horsepower rating (1/2 hp to 10 hp).
- Inspect the motor itself for mechanical issues or excessive load.
- Device Overheats:
- This is unlikely for a PTC device in normal operation. If overheating occurs, immediately disconnect power and consult a qualified technician. This could indicate incorrect wiring or a fault in the motor or device.
For persistent issues, consult a qualified HVAC or electrical technician.
8. Warranty and Support
For specific warranty information and technical support regarding your ICM Controls ICM856 Motor Hard Start Kit, please refer to the documentation provided with your purchase or consult the manufacturer's official website.
Manufacturer: ICM Controls
