Robinair CoolTech 15401 2-Stage Vacuum Pump User Manual

1. Important Safety Information

Please read and understand all safety warnings and operating instructions before using this vacuum pump. Failure to follow these instructions may result in electric shock, fire, serious injury, or property damage.

• Electrical Safety: Ensure the pump is connected to a properly grounded power source with the correct voltage (115V/220-250V, 50/60Hz) as specified on the unit. Avoid using extension cords unless absolutely necessary, and ensure they are rated for the pump's power requirements. Disconnect power before performing any maintenance.
• Moving Parts: Keep hands, hair, and clothing clear of all moving parts during operation.
• Hot Surfaces: The pump motor and housing may become hot during extended operation. Avoid direct contact.
• Refrigerant Handling: This pump is designed for use with CFCs, HCFCs, and HFCs. Do not use with ammonia, lithium bromide systems, or flammable refrigerants. Always wear appropriate personal protective equipment (PPE), including safety glasses and gloves, when handling refrigerants.
• Oil Handling: Vacuum pump oil can be an irritant. Avoid skin and eye contact. Dispose of used oil responsibly according to local regulations.
• Ventilation: Operate the pump in a well-ventilated area to prevent the buildup of refrigerant vapors.

2. Product Overview

The Robinair CoolTech 15401 is a high-performance 2-stage rotary vane vacuum pump designed for efficient evacuation of A/C-R systems. It features a robust construction and a powerful motor to achieve a fast, thorough evacuation down to 15 microns.

An image showing the Robinair CoolTech 15401 2-Stage Vacuum Pump from a front-side angle, highlighting its compact design and key components.

Key Features:

• 2-Stage Rotary Vane Design: Ensures deep vacuum and efficient moisture removal.
• Powerful Motor: 1/3 HP, 115V/220-250V - 50/60Hz thermally protected motor for high torque and reliable operation.
• High Displacement: 94 liters per minute (3.3 CFM) free air displacement.
• Deep Vacuum Rating: Factory rated to 15 microns.
• Iso-Valve: Isolates the pump from the system with a quarter turn, preventing oil migration and maintaining vacuum.
• Gas Ballast: Helps to prevent condensation of moisture vapor within the pump, improving efficiency and oil life.
• Durable Construction: Molded polycarbonate base for improved balance and minimal vibration.
• Convenient Features: Easy-to-read sight glass, easy access oil fill port, and angled oil drain valve.
• Inlet Fittings: Includes 1/4 inch and 1/2 inch male flare inlet fittings for versatile connections.

3. Setup and Installation

3.1 Unpacking and Inspection

Carefully remove the vacuum pump from its packaging. Inspect the unit for any signs of shipping damage. If damage is found, contact your supplier immediately.

3.2 Electrical Connection

The Robinair 15401 pump is designed for international use and can operate on 115V or 220-250V, 50/60Hz power. The unit may come pre-wired for 240V. Refer to the wiring diagram located on the motor for instructions on how to convert the wiring to 120V if necessary. If you are unsure about electrical wiring, consult a qualified electrician.

Ensure the power cord (not included, requires a suitable male electric cord) is securely connected and the power outlet is properly grounded. The pump requires a power cord capable of handling the necessary amperage for a 1/3 HP motor.

3.3 Oil Filling

The pump is shipped without oil in the reservoir. Vacuum pump oil is included with the unit. To fill the oil:

1. Locate the easy access oil fill port on top of the pump.
2. Remove the oil fill cap.
3. Carefully pour the vacuum pump oil into the reservoir until the oil level is between the MIN and MAX lines on the sight glass. Do not overfill.
4. Replace the oil fill cap securely.

3.4 Initial Checks

• Place the pump on a stable, level surface to ensure proper oil circulation and minimize vibration.
• Ensure all connections are tight and secure.
• Verify the Iso-Valve is in the closed position before starting the pump.

4. Operating Instructions

4.1 Connecting to the System

Use appropriate vacuum-rated hoses to connect the pump's inlet fittings (1/4" or 1/2" male flare) to the A/C-R system's service ports. Ensure all connections are leak-free.

4.2 Evacuation Procedure

1. Ensure the Iso-Valve is in the closed position.
2. Turn on the vacuum pump. Allow it to run for a few seconds to stabilize.
3. Slowly open the Iso-Valve to connect the pump to the system.
4. Open the service valves on the A/C-R system to allow evacuation.
5. Monitor the vacuum level using a reliable vacuum gauge. The pump is designed to achieve a deep vacuum of 15 microns.
6. Using the Gas Ballast: If evacuating a system with significant moisture, open the gas ballast valve. This introduces a small amount of dry air into the pump, helping to prevent moisture condensation and improve the pump's ability to handle water vapor. Close the gas ballast valve once the system is mostly dry or when approaching the target vacuum level.
7. Continue evacuation until the desired vacuum level is reached and held stable for a specified period, indicating thorough moisture removal.

4.3 Shutting Down

1. Close the service valves on the A/C-R system.
2. Close the Iso-Valve on the pump. This isolates the pump from the system, preventing oil migration and maintaining the vacuum in the system.
3. Turn off the vacuum pump.
4. Disconnect the hoses from the pump and system. Cap all ports to prevent contamination.

5. Maintenance

5.1 Oil Change

Regular oil changes are crucial for the longevity and performance of your vacuum pump. Change the oil after every 10-20 hours of operation, or more frequently if the oil appears cloudy or discolored (indicating moisture contamination).

1. Ensure the pump is off and cool.
2. Place a suitable container under the angled oil drain valve.
3. Remove the oil drain cap and the oil fill cap to allow air to enter and facilitate draining.
4. Allow all old oil to drain completely. The angled design of the drain valve helps ensure a more complete draining.
5. Replace the oil drain cap.
6. Refill with new, clean vacuum pump oil through the oil fill port, observing the sight glass to ensure the level is between MIN and MAX.
7. Replace the oil fill cap.
8. Dispose of used oil according to local environmental regulations.

5.2 Cleaning and Storage

• Wipe down the exterior of the pump with a clean, damp cloth. Avoid using harsh chemicals that could damage the finish.
• Keep the oil sight glass clean for accurate oil level monitoring.
• When not in use, store the pump in a clean, dry environment. Cap all inlet ports to prevent dust and contaminants from entering the pump.

6. Troubleshooting

This section addresses common issues you might encounter with your Robinair 15401 vacuum pump.

For issues not listed here or if solutions do not resolve the problem, please contact Robinair customer support.

7. Specifications

8. Warranty and Support

The Robinair 15401 CoolTech Vacuum Pump typically comes with a 1-year 'no hassle' warranty. For specific warranty details and terms, please refer to the documentation included with your purchase or contact your dealer.

For technical assistance, parts, or service inquiries, please contact Robinair customer support. Robinair is a Bosch Automotive Service Solutions brand, committed to providing quality tools and equipment.

You can find contact information for Robinair support on their official website or through your product dealer.