Packard C220A 2-Pole 20 Amp Contactor Instruction Manual

1. Introduction

This manual provides essential information for the safe and effective installation, operation, and maintenance of the Packard C220A 2-Pole 20 Amp Contactor. Please read this manual thoroughly before attempting any installation or operation. Retain this manual for future reference.

2. Safety Information

WARNING: Risk of electric shock. Installation and servicing must be performed by qualified personnel only. Disconnect all power before working on the contactor or connected equipment.

• Always ensure power is disconnected at the main circuit breaker or fuse panel before installation or maintenance.
• Verify all wiring connections are secure and correct according to local electrical codes and the wiring diagram of the connected equipment.
• Do not exceed the specified voltage and current ratings of the contactor.
• Wear appropriate personal protective equipment (PPE), including insulated gloves and safety glasses.
• This device is designed for specific applications. Do not use it for purposes other than its intended function.

3. Product Overview

The Packard C220A is a 2-pole contactor designed for switching electrical loads in various applications, including HVAC systems, motor control, and lighting. It features a 24V AC coil for control circuit operation and is rated for up to 20 amps per pole.

Figure 1: Packard C220A 2-Pole 20 Amp Contactor. This image displays the front and side view of the contactor, highlighting its terminals, mounting plate, and the product label with specifications such as model number C220A, coil voltage 24 VAC, 50/60 Hz, and contactor ratings per pole.

Key Features:

• 2-Pole configuration
• 20 Amp current rating per pole
• 24V AC coil voltage
• Screw type connectors
• DIN Rail Mount compatibility
• Automatic operation mode

4. Specifications

Contactor Rating Per Pole:

Note: Herm.refrig.comp. indicates suitability for hermetic refrigeration compressor applications.

5. Installation and Setup

Before You Begin: Ensure all power to the circuit where the contactor will be installed is completely disconnected. Use a voltage tester to confirm the absence of power.

1. Mounting: Secure the Packard C220A contactor to a suitable DIN rail or mounting surface within an appropriate electrical enclosure. Ensure adequate ventilation and clearance around the contactor.
2. Power Wiring:
   • Connect the incoming line voltage wires to the designated line terminals (L1, L2) of the contactor.
   • Connect the load wires (to the motor, heater, etc.) to the designated load terminals (T1, T2) of the contactor.
   • Ensure all power connections are tight. Apply torque of 22 IN LBS for screws and 40 IN LBS for lugs, as specified for CU 75°C conductors.
3. Control Wiring:
   • Connect the 24 VAC control circuit wires to the coil terminals of the contactor. The coil terminals are typically marked A1 and A2 or similar.
   • The control circuit is responsible for energizing and de-energizing the contactor coil, thereby opening or closing the main power contacts.
4. Verification: Double-check all wiring for correctness, tightness, and adherence to local electrical codes. Ensure no bare wires are exposed.

CAUTION: Incorrect wiring can lead to equipment damage, fire, or personal injury.

6. Operation

The Packard C220A contactor operates automatically based on the control circuit signal. When the 24 VAC control voltage is applied to the coil terminals, the coil energizes, creating a magnetic field that pulls the armature, closing the main power contacts. This allows current to flow from the line terminals to the load terminals, activating the connected equipment.

When the 24 VAC control voltage is removed from the coil, the magnetic field collapses, and springs return the armature to its original position, opening the main power contacts and de-energizing the connected equipment.

Normal Operation Sequence:

1. Control signal (24 VAC) applied to coil.
2. Contactor coil energizes.
3. Main power contacts close.
4. Power flows to the connected load.
5. Control signal removed from coil.
6. Contactor coil de-energizes.
7. Main power contacts open.
8. Power to the connected load is interrupted.

7. Maintenance

The Packard C220A contactor is designed for reliable operation with minimal maintenance. However, periodic inspection is recommended to ensure optimal performance and safety.

• Power Disconnection: Always disconnect all power before performing any maintenance.
• Visual Inspection: Periodically inspect the contactor for signs of wear, damage, or overheating (e.g., discoloration, melted plastic). Check for loose connections or foreign objects.
• Terminal Tightness: Verify that all terminal screws are tight. Loose connections can cause overheating and arcing.
• Contact Condition: While typically not user-serviceable, excessive arcing or pitting of contacts may indicate a need for replacement.
• Cleaning: Keep the contactor free from dust, dirt, and moisture. Use a dry, non-conductive brush or compressed air for cleaning.

NOTE: Do not attempt to repair internal components of the contactor. If significant wear or damage is observed, replace the unit.

8. Troubleshooting

This section provides guidance for common issues. For complex problems, consult a qualified electrician.

9. Warranty and Support

For specific warranty information, please refer to the documentation provided at the time of purchase or contact Packard customer support. Keep your purchase receipt as proof of purchase.

For technical assistance or support, please contact Packard directly through their official website or customer service channels. Provide the model number (C220A) and a detailed description of your issue when seeking support.