VEVOR VP245 Vacuum Pump

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This is the original instruction. Please read all manual instructions carefully before operating. VEVOR reserves the right to interpret its user manual. The appearance of the product is subject to the product you received. VEVOR will not provide further notice for any technology or software updates on its products.

Safety Instructions

Before operating this appliance, please read the instructions manual carefully and save these instructions. Basic safety precautions should always be followed, including the following:

• ⚠️ Warning: To reduce the risk of injury, the user must read the instructions manual carefully.
• ❗ Precaution: This symbol, placed before a safety comment, indicates a kind of precaution, warning, or danger. Ignoring this warning may lead to an accident. To reduce the risk of injury, fire, or electrocution, please always follow the recommendation shown below.
• ℹ️ FCC Compliance: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

General Warnings and Cautions:

• Household Use Only.
• WARNING: Hot Surface - To reduce the risk of burns, do not touch.
• CAUTION: To reduce the risk of electric shock, do not expose to rain. Store indoors.
• CAUTION: To reduce the risk of electric shock, use indoors only.
• WARNING: Risk of injury - Do not direct air steam at the body.

French Translation:

• Utilisez seulement des ménages.
• AVERTISSEMENT: Surface chaude - Pour réduire le risque de brûlures, ne touchez pas.
• ATTENTION: Pour réduire le risque de choc électrique, ne pas exposer à la pluie. Stockez à l'intérieur.
• ATTENTION: Pour réduire le risque de choc électrique, utilisez uniquement à l'intérieur.
• AVERTISSEMENT: Risque de blessure - Ne pas diriger de courant d'air vers le corps.

Pump Components

The vacuum pump features the following components:

• Handle
• Exhaust Fitting (Oil Fill Cap)
• Sight Glass
• Die-Cast Aluminum Housing
• Oil Drain
• Fan Cover
• Motor
• Base

Package List:

• 5 CFM vacuum pump x 1
• 330ml oil bottle x 1
• 230ml oil bottle x 1
• User manual x 1

Operating Manual

1. Before Using Your Vacuum Pump

Motors are designed for operating voltages plus or minus 10% of the normal rating. Single voltage motors are supplied fully connected and ready to operate.

1. Check that the voltage and frequency at the outlet match the specifications on the pump motor decal. Ensure the ON-OFF switch is in the OFF position before plugging the pump into an outlet. Remove and discard the exhaust cap from the end of the pump's handle.
2. The pump is shipped without oil in the reservoir. Before starting the pump, fill it with oil. Remove the Exhaust Fitting cap and add oil until it just shows in the bottom of the sight glass. The approximate oil capacity of the pump is 180-800ml (refer to technical data).
3. Replace the Exhaust Fitting cap and remove the cap from one of the inlet ports. Turn the motor switch to ON. When the pump runs smoothly, replace the cap on the inlet port. This may take from two to 30 seconds, depending on the ambient temperature. After the pump runs for approximately one minute, check the sight glass for the proper oil level. The level should be even with the sight glass oil level line. Add oil if necessary.

Note: When the pump is running, the oil level should be even with the line on the sight glass. Underfilling will result in poor vacuum performance. Overfilling can result in oil blowing from the exhaust.

2. To Shut Down Your Pump After Use

To help prolong pump life and promote easy starting, follow these procedures for shut down:

1. Close the manifold valve between the pump and the system.
2. Remove the hose from the pump inlet.
3. Cap the inlet port to prevent any contamination or loose particles from entering the port.

To Maintain Your High Vacuum Pump

1. Vacuum Pump Oil

The condition and type of oil used in any high vacuum pump are extremely important in determining the ultimate attainable vacuum. VEVOR recommends the use of High Vacuum Pump Oil. This oil is specifically blended to maintain maximum viscosity at normal running temperatures and to improve cold weather starts.

2. Oil Change Procedure

1. Ensure the pump is warmed up.
2. Remove the OIL DRAIN cap. Drain contaminated oil into a suitable container and dispose of it properly. Oil can be forced from the pump by opening the inlet and partially blocking the exhaust with a cloth while the pump is running. Do not operate the pump for more than 20 seconds using this method.
3. When the flow of oil has stopped, tilt the pump forward to drain residual oil.
4. Replace the OIL DRAIN cap. Remove the exhaust fitting and fill the reservoir with new vacuum pump oil until the oil just shows at the bottom of the sight glass. The approximate oil capacity of the pump is 180-800ml (reference the technical data).
5. Ensure the inlet ports are capped, then turn on the pump. Allow it to run for one minute, then check the oil level space. If the oil is below the sight glass OIL LEVEL line, add oil slowly (with the pump running) until the oil reaches the OIL LEVEL line. Replace the exhaust fitting.
6. For badly contaminated oil:
   • If the oil is badly contaminated with sludge that forms when water is allowed to collect in the oil, you may need to remove the oil reservoir cover and wipe it out.
   • Alternatively, to force heavily contaminated oil from the pump reservoir: allow the pump to run until it is warmed up. While the pump is still running, remove the oil drain cap. Slightly restrict the exhaust. This will back-pressure the oil reservoir and force the oil from it, carrying more contamination. When the oil ceases to flow, turn off the pump.
7. Repeat this procedure as required until the contamination is removed. Replace the OIL DRAIN cap and refill the reservoir to the proper level with fresh pump oil.

Troubleshooting Guide

Your pump has been designed for dependable use and has a long life. If something should go wrong, the following guide will help you get the pump back into service as quickly as possible.

If disassembly of the pump is required, please check your warranty. The warranty may be voided by misuse or customer tampering, which results in the pump being inoperable.

1. Failure To Start

Check the line voltage. The pump needs to start at ±10% line voltage (loaded) at 320°F (160°C). At extremes, switching between the standard run windings may occur.

2. Oil Leakage

• Ensure the oil is not a residual accumulation from spillage, etc.
• If leakage exists, the module cover gasket or the shaft seal may need replacing. If leakage exists in the area of the oil drain plug, you may need to reseal the plug using a commercial pipe thread sealer.

3. Failure To Pull A Good Vacuum

• Ensure the vacuum gauge and all connections are in good condition and leak-free. You can confirm leakage by monitoring the vacuum with a thermistor gauge while applying vacuum pump oil at connections or suspected leak points. The vacuum will improve briefly while the oil is sealing the leak.
• Ensure the pump oil is clean. A badly contaminated pump may require several oil flushes.
• Ensure the oil is at the proper level. For maximum pump operation, the oil must be even with the OIL LEVEL line on the sight glass when the pump is running. Do not overfill—operating temperatures will cause the oil to expand, so it will appear at a higher level than when the pump is not running. To check the oil level, start the pump with the inlet capped. Check the oil level in the sight glass. Add oil if necessary.

Common Troubleshooting

Note: If the above solutions do not solve your problem, please contact the nearest dealer, or send your pump to a professional repair center. VEVOR will do its best to serve you.

Technical Parameters

Exploded Drawing

The following table lists the components shown in the exploded view diagram:

Manufacturer Information

Manufacturer: WENLING YANGYI MECHANICAL AND ELECTRICAL PRODUCTS CO., LTD
Address: Chengxi Industrial Zone, Wenling, Zhejiang, 317500, China
Made In China