VEVOR Vacuum Pump

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A VEVOR vacuum pump with an orange motor housing and silver die-cast aluminum body. It features a handle on top, a sight glass for oil level, an exhaust fitting (oil fill cap), an oil drain, and an inlet nozzle.

Need Help? Contact Us!

For product questions or technical support, please contact VEVOR Customer Service at CustomerService@vevor.com.

Important Information

This document contains the original instructions. Please read all manual instructions carefully before operating the vacuum pump. VEVOR reserves the right to interpret the user manual. The appearance of the product is subject to the actual item received. VEVOR may update technology or software without prior notice.

Safety Instructions

CAUTION:

• To reduce the risk of injury, users must read the instructions manual carefully.
• The warning symbol (!), placed before a safety comment, indicates a kind of precaution, warning, or danger. Ignoring this warning may lead to an accident. Always follow the recommendations to reduce the risk of injury, fire, or electrocution.
• This device complies with Part 15 of the FCC Rules. Operation is subject to 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.

WARNING: Household Use Only.

WARNING: Hot Surface - Do not touch to reduce the risk of burns.

CAUTION: To reduce the risk of electric shock, do not expose to rain and 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 directement sur le corps.

Pump Components

A diagram illustrates the components of the vacuum pump, including:

• Fan cover
• Cross screw
• Fan
• Motor cover
• Power supply cords
• Power switch
• Undee washer
• Bearing
• Motor rotor
• Capacitor box
• Centrifugal switch
• Motor stator
• Casing
• Capacitor
• Handle
• Trestle
• Gas cap
• The air inlet nozzle
• Screw
• Front rotary-vane
• Spring
• Cap board
• Exhaust and oil inlet fitting
• Die cast aluminum housing
• Sight glass
• Oil drain
• Oil drain screw O-ring
• Screw
• Sealing ring
• Screw
• Rubber foot
• Base plate
• Self tapping screw
• Back-pump cover
• Oil seal
• Back-pump body
• Back-rotary-vane
• Back-pump rotor
• Spring
• Middle fense
• Front-pump body
• Front-pump rotor
• Front cover
• Oil seal
• O type ring
• Screw

Operating Manual

1. Before using your vacuum pump

• Motors are designed for operating voltages within +/- 10% of the normal rating.
• Ensure the outlet voltage and frequency match the pump motor decal specifications.
• Verify the ON-OFF switch is in the OFF position before plugging in the pump.
• Remove and discard the exhaust cap from the pump's handle.
• The pump is shipped without oil. Fill the reservoir with oil before starting. Remove the Exhaust Fitting cap and add oil until it just shows in the bottom of the sight glass. The approximate oil capacity is 180-800ml.
• Replace the Exhaust Fitting cap. Remove the cap from one of the inlet ports. Turn the motor switch to ON. Once the pump runs smoothly, replace the cap on the inlet port. This may take 2-30 seconds depending on ambient temperature.
• After the pump runs for approximately one minute, check the sight glass for 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 align with the line on the sight glass. Underfilling leads to poor vacuum performance. Overfilling can cause oil to blow from the exhaust.

2. To shut down your pump after use

To prolong pump life and ensure easy starting:

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

To Maintain Your High Vacuum Pump

1. Vacuum Pump Oil

The condition and type of oil are crucial for achieving the ultimate attainable vacuum. VEVOR recommends using High Vacuum Pump Oil, which is specifically blended for maximum viscosity at normal temperatures and improved 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 for proper disposal. Oil can be forced out by opening the inlet and partially blocking the exhaust with a cloth while the pump is running (do not operate for more than 20 seconds).
3. When oil flow stops, 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 it just shows at the bottom of the sight glass (approx. 180-800ml).
5. Cap the inlet ports and turn on the pump. Run for one minute, then check the oil level. If below the OIL LEVEL line, add oil slowly while the pump is running until the level reaches the line. Replace the exhaust fitting, ensuring the inlet is capped and the drain cap is tight.
6. If the oil is heavily contaminated with sludge (due to water accumulation), remove the oil reservoir cover and wipe it clean. Alternatively, warm up the pump, remove the oil drain cap, and slightly restrict the exhaust to force oil out. Repeat as necessary until contamination is removed. Replace the OIL DRAIN cap and refill with fresh oil.

Troubleshooting Guide

This guide helps resolve issues to get the pump back into service quickly. Note: Disassembly may void the warranty.

1. Failure To Start

Check line voltage. The pump needs to start at +/-10% line voltage (loaded) at 320°F. Switching between standard run windings may occur at extremes.

2. Oil Leakage

• Ensure oil is not residual spillage.
• If leakage occurs at the module cover gasket or shaft seal, replacement may be needed.
• If leakage is at the oil drain plug, reseal the plug with a commercial pipe thread sealer.

3. Failure To Pull A Good Vacuum

• Verify the vacuum gauge and all connections are in good condition and leak-free. Leakage can be confirmed by monitoring vacuum with a thermistor gauge while applying vacuum pump oil at suspected leak points.
• 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 operation, the oil level should align with the OIL LEVEL line on the sight glass when the pump is running. Do not overfill, as operating temperatures cause oil expansion. To check the oil level, start the pump with the inlet capped and check the sight glass. Add oil if necessary.

Common Trouble Shooting

Note: If the above solutions do not resolve the problem, contact the nearest dealer or a professional repair center.

Technical Parameter

Exploded Drawing

The exploded drawing shows the internal components of the vacuum pump, with numbered parts corresponding to a list provided in the manual.

Component List:

• 1 Fan cover, 2 Cross screw, 3 Fan, 4 Motor cover, 5 Power supply cords, 6 Power switch, 7 Undee washer, 8 Bearing, 9 Motor rotor, 10 Capacitor box, 11 Centrifugal switch, 12 Motor stator, 13 Casing, 14 Capacitor, 15 Handle, 16 Trestle, 17 Gas cap, 18 The air inlet nozzle, 19 Screw, 20 Front rotary-vane, 21 Spring, 22 Cap board, 23 Exhaust and oil inlet fitting, 24 Die cast aluminum housing, 25 Sight glass, 26 Oil drain, 27 Oil drain screw O-ring, 28 Screw, 29 Sealing ring, 30 Screw, 31 Rubber foot, 32 Base plate, 33 Self tapping screw, 34 Back-pump cover, 35 Oil seal, 36 Back-pump body, 37 Back-rotary-vane, 38 Back-pump rotor, 39 Spring, 40 Middle fense, 41 Front-pump body, 42 Front-pump rotor, 43 Front cover, 44 Oil seal, 45 O type ring, 46 Screw

Manufacturer Information

Manufacturer: WENLING YANGYI MECHANICAL AND ELECTRICAL PRODUCTS CO., LTD

Address: Chengxi Industrial Zone, Wenling, Zhejiang, 317500, China

Made In China