DOLUNTO 2200W Hydraulic Power Unit Instruction Manual

1. Introduction

This manual provides essential information for the safe and effective operation and maintenance of your DOLUNTO 2200W Hydraulic Power Unit. This high-quality unit is designed for various lifting applications, including car repair lifts, and other hydraulic machinery. Please read this manual thoroughly before installation and use.

Key Features:

• High-Quality Construction: Built with high strength and hardness, featuring a high-pressure, small-displacement gear pump for durability and efficient lifting power.
• Excellent Performance: Operates at 208-240V AC with a 3HP motor (2.2KW), providing smooth and fast lifting and lowering. Motor speed of 2850 RPM ensures high efficiency.
• Safety Assurance: Adjustable pump pressure and valve with a relief pressure of 2950 PSI. The steel tank, holding 10L (2.64 gallons) of fluid, is designed to prevent cracks and leaks. The closed structure minimizes external contamination.
• Easy Operation: Equipped with a 10L (2.64 Gal) tank, valve, and remote cord set for convenient lifting. Features 14mm 18 SAE input and output ports for connections.
• Wide Utilization: Suitable for dump trailers, dump trucks, RVs, boat lifts, lift gates, tow trucks, wreckers, car haulers, and other applications requiring a powerful and compact hydraulic pump.

2. Safety Information

Always prioritize safety when operating hydraulic equipment. Failure to follow safety guidelines can result in serious injury or equipment damage.

• Ensure the power unit is installed on a stable, level surface or securely mounted.
• Always disconnect power before performing any maintenance or adjustments.
• Use appropriate personal protective equipment (PPE), including safety glasses and gloves.
• Verify all hydraulic connections are secure and free of leaks before operation.
• Do not exceed the maximum rated pressure or load capacity of the unit.
• Keep hands and clothing clear of moving parts.
• Only use recommended hydraulic fluid.

3. Components Overview

Figure 3.1: Front view of the DOLUNTO Hydraulic Power Unit, showing the motor, control box, and hydraulic tank.

Figure 3.2: Close-up of the electronic motor and green control button, indicating the power input area.

• Electric Motor: Provides the power to drive the hydraulic pump.
• Hydraulic Tank: Stores the hydraulic fluid. This unit features a 10L (2.64 gallons) steel tank.
• Control Box: Houses the electrical components and the main power button.
• Release Handle: Used to manually lower the hydraulic system by releasing pressure.
• Oil Fill Cap/Dipstick: For adding hydraulic fluid and checking the fluid level.
• Inlet/Outlet Ports: Connections for hydraulic hoses to the lifting equipment.
• Overflow Valve: Limits pressure to 20MPa, ensuring safe operation.
• Throttle Valve: Controls the working speed via oil flow.

4. Setup

4.1 Mounting the Power Unit

The DOLUNTO Hydraulic Power Unit features universal mounting. Securely mount the unit to a stable structure using appropriate fasteners. Ensure the mounting surface can support the weight of the unit and withstand operational vibrations.

4.2 Adding Hydraulic Fluid

The unit may contain residual fluid from factory testing. Before initial operation, fill the tank with anti-wear hydraulic oil with a kinematic viscosity of 22-46mm²/s (at 50°C).

1. Remove the oil fill cap/dipstick.
2. Using a funnel, carefully pour the recommended hydraulic oil into the tank until it reaches the appropriate level indicated on the dipstick. Do not overfill.
3. Replace the oil fill cap securely.

4.3 Connecting Hydraulic Hoses

Connect the hydraulic hoses from your lifting equipment to the inlet and outlet ports of the power unit. Ensure all connections are tight and leak-free.

4.4 Electrical Connection

Connect the power unit to a 220V AC power supply. Ensure proper wiring according to local electrical codes and safety standards. The unit is single-phase.

5. Operating Instructions

5.1 Lifting Operation

To lift the connected equipment:

1. Ensure all connections are secure and the hydraulic fluid level is correct.
2. Press the green power button on the control box to activate the motor.
3. Use the remote cord set or the manual handle to initiate the ascent. The motor will run, and the hydraulic pressure will lift the equipment.
4. Release the button/handle when the desired height is reached.

5.2 Lowering Operation

The unit supports gravity lowering. To lower the connected equipment:

1. Ensure the area below the equipment is clear.
2. Activate the lowering mechanism (typically a lever or button on the remote) to release hydraulic pressure. The equipment will descend due to gravity.
3. Control the descent speed using the throttle valve if adjustable, or by carefully manipulating the release mechanism.

6. Maintenance

Regular maintenance ensures the longevity and optimal performance of your hydraulic power unit.

• Check Fluid Level: Regularly inspect the hydraulic fluid level using the dipstick. Refill as necessary with the recommended fluid.
• Fluid Replacement: Replace hydraulic fluid periodically, or as recommended by the fluid manufacturer, to prevent contamination and maintain system efficiency.
• Inspect Hoses and Connections: Check all hydraulic hoses for wear, cracks, or damage. Ensure all connections are tight to prevent leaks.
• Clean Unit: Keep the exterior of the power unit clean and free of dirt, dust, and debris to prevent overheating and ensure proper function of controls.
• Electrical Inspection: Periodically check electrical wiring for any signs of damage or loose connections.

7. Troubleshooting

If you encounter issues with your hydraulic power unit, refer to the following common troubleshooting steps:

• Unit Not Powering On: Check the electrical connection, power supply, and ensure the power button is functioning correctly. Verify circuit breakers are not tripped.
• Slow or No Lifting: Check hydraulic fluid level and ensure it is adequate. Inspect for any leaks in the hydraulic system. Verify the motor is running at the correct speed. The throttle valve might need adjustment.
• Fluid Leaks: Tighten all hydraulic hose connections. Inspect hoses and seals for damage and replace if necessary.
• Excessive Noise: Check hydraulic fluid level. Air in the hydraulic system can cause noise; cycle the system to bleed air. Inspect the motor and pump for any unusual wear.
• Equipment Not Lowering: Ensure the release handle or lowering mechanism is fully engaged. Check for obstructions or blockages in the hydraulic lines.

For persistent issues, contact qualified service personnel or DOLUNTO customer support.

8. Specifications

9. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the documentation included with your purchase or contact DOLUNTO customer service. Keep your purchase receipt for warranty claims.