VEVOR Vacuum Pump Operating Manual

Introduction

Welcome to the user manual for your VEVOR vacuum pump. This versatile tool is suitable for a wide range of applications, including HVAC vacuuming, epoxy and silicone degassing, wood stabilization, and creating milking machines. It is also commonly used in medical appliances, printing machinery, vacuum packing, gas analysis, and hot-forming plastics. Its powerful and reliable performance makes it valuable for professionals and DIY enthusiasts.

The vacuum pump operates by creating a vacuum or negative pressure to remove air and other gases from an enclosed space. This process is useful for reducing air bubbles in resins, evacuating HVAC systems, stabilizing wood, and more.

This manual is designed to help you understand how to operate and maintain your vacuum pump safely and effectively. It covers key features, components, and provides important safety guidelines to avoid potential hazards and ensure proper handling.

Please read this manual carefully before operating. Proper use and maintenance will ensure years of reliable service. For questions or concerns, consult this manual or contact VEVOR customer support.

Safety Precautions

Warning about potential hazards and how to avoid them

Improper use of the vacuum pump can lead to hazards such as electrical shock, fire, or explosion, especially when pumping flammable, explosive, or poisonous gases, or gases that can corrode metals. Always read and follow the instructions in this manual.

Instructions on how to handle the vacuum pump safely

• Never operate the pump without oil, as this can damage the pump and create hazards.
• The temperature of the pumped gas should not exceed 80°C, and the environment temperature should be between 5°C and 60°C for safe operation and to prevent pump damage.
• Do not use the vacuum pump as a compression or conveyer pump, as this can cause damage and potential hazards.
• The operating voltage is between 192 to 248V, 50Hz. Use a grounded outlet to prevent electrical shock.
• When unplugging, pull the plug, not the wire, to avoid cord damage and potential hazards.
• Keep the electrical cord clear of shop equipment and do not let the pump hang by the cord.
• Do not use a damaged plug or outlet, as this can cause electrical shock or fire.
• Do not plug or unplug the unit with wet hands, as this can cause electrical shock.
• Do not plug in, unplug, or use the switch if flammable or explosive gases are present. Always unplug before disassembling.

Guidelines for handling hazardous materials

This vacuum pump should not be used for flammable, explosive, or poisonous gases, or gases that corrode metals. Do not pump gas containing dust or moisture. For hazardous materials, use proper personal protective equipment and follow safe handling and disposal guidelines.

Getting Started

Introducing the key features of the pump

• Dual-stage Rotary Vane Vacuum Pump with Gas Ballast: Reduces moisture corrosion and extends the life of the machine and oil.
• Copper Coil, Four-Pole Motor: Provides higher torque for better starting, produces less heat, and is more durable.
• Die-Cut Aluminum Body and Ventilation Fan: Allows for easy heat dissipation and ensures performance stability.
• Anti-Flow Design: Features an auto anti-backflow valve and manual ball valve to prevent backflow and control vacuum, protecting the equipment.

Package Contents and Specification

Specifications

Package List

• 2KQ-2G: 5 CFM vacuum pump x 1, 280ml oil bottle x 1, User manual x 1
• 2KQ-3G: 7CFM vacuum pump x 1, 250ml oil bottle x 2, User manual x 1

Steps for setting up the vacuum pump

Follow these steps for correct setup and safe, efficient operation:

• Before use, remove the oil filling port/oil gas separator and fill with recommended vacuum pump oil. Check the oil level to ensure it is not below the oil-level line. Do not run the pump with low oil.
• Connect the container to be pumped to the gas inlet using a short, sealed hose free of dust, dirt, and heavy condensation. Check for leaks before operating.
• If your pump includes an exhaust cap, remove it.
• Plug in the power supply and turn on the switch.
• After use, unplug the pump, remove connecting hoses, and cover the exhaust cap (if present) to prevent oil spills. Cover the oil plug to keep oil clean and prevent dirt entry.

Installation and Maintenance of Vacuum Pump

Installation

Follow these guidelines for proper functioning:

• Position the pump horizontally in a dry, ventilated area free of dust and contaminants.
• Maintain at least 10cm (4 inches) clearance around the pump for proper airflow.
• For permanent mounting, remove rubber pads and use existing threaded holes with ST4.2 screws.
• Ensure proper clearances, especially at the air intake end of the vane shell, when permanently mounting.
• A special electromagnetic valve can be installed on the gas inlet if needed.

Connecting the vacuum pump to the system being evacuated

Follow these steps to control vacuum pressure and connect safely:

• Identify the gas inlet on the pump and the gas outlet on the system being evacuated.
• Use a short, sealed hose, free of dust, dirt, and heavy condensation, to connect the pump's gas inlet to the system's gas outlet.
• Check for leaks in the connection before starting the pump.

Maintenance

Proper maintenance ensures optimal performance. Follow these guidelines:

• Keep the pump clean and free from foreign matter.
• Maintain the oil level and never run the pump without oil.
• Keep the oil clean. Replace oil if it becomes dirty, muddy, or contaminated with water or volatile substances. To replace oil: run the pump for 30 minutes to thin the oil, stop, drain from the oil drain plug. Open the gas inlet and run the pump for 1-2 minutes while adding clean oil to the gas inlet to replace residual oil. Re-insert the drain plug and fill with clean oil to the level.
• For long-term storage, cover the oil cap and exhaust cap (if applicable) and store in a dry place.
• Repair should only be performed by a qualified service technician.

Troubleshooting Guide

Exploded Diagram of the Pump Components

The following lists the components shown in the exploded diagram:

• 1: Fan cover
• 2: Screw
• 3: Snap ring
• 4: Fan
• 5: Screw
• 6: Motor back cover
• 7: Centrifugal baseplate
• 8: Screw
• 9: Bearing
• 10: Centrifugal
• 11: Motor rotor components
• 12: Power cable
• 13: Bearing
• 14: Waveform gasket
• 15: Bearing
• 16: Insulating bushing
• 17: Power Switch
• 18: Motor stator components
• 19: Junction box base
• 20: Screw
• 21: Gasket
• 22: Capacitor
• 23: Motor cover
• 24: Bracket
• 25: Gas ballast fitting
• 26: Screener
• 27: Nut
• 28: Gas inlet
• 29: Handle
• 30: O-ring
• 31: O-ring
• 32: Front-pump stator
• 33: Screw
• 34: Front-pump vane
• 35: Spring
• 36: Front-pump rotor
• 37: Straight pin
• 38: Screw
• 39: Valve platen
• 40: Exhaust valve plate
• 41: Front-pump stator
• 42: Screw
• 43: Intermediate connecting block
• 44: Screw
• 45: Back-pump vane
• 46: Back-pump rotor
• 47: Back-pump stator
• 48: Screw
• 49: Back-pump cover
• 50: Screw
• 51: Cap board
• 52: O-ring
• 53: Screw
• 54: Oil gas separator
• 55: O-ring
• 56: Oil tank
• 57: Oil level
• 58: O-ring
• 59: Oil drain plug
• 60: Screw
• 61: Rubber feet
• 62: Nut
• 63: Screw
• 64: Baseboard
• 65: Rubber pad

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