Introduction
Thank you for choosing the LEHMANN 30L Industrial Wet/Dry Vacuum Cleaner. This manual provides essential information for the safe and efficient operation, assembly, and maintenance of your new vacuum cleaner. Please read these instructions carefully before use and keep them for future reference.
This powerful 1500W vacuum cleaner with an 18 kPa suction power is designed for both wet and dry cleaning tasks in demanding environments such as workshops, garages, construction sites, and during renovation work. It features a robust 30-liter tank, a dual filtration system with a washable HEPA filter, an integrated filter cleaning function, a 2000W power outlet with automatic start/stop, and a convenient blower function.
Safety Instructions
Always observe basic safety precautions when using electrical appliances to reduce the risk of fire, electric shock, and personal injury. This includes, but is not limited to:
- Read all instructions before operating the appliance.
- Do not leave the appliance unattended when plugged in. Unplug from outlet when not in use and before servicing.
- Do not use outdoors or on wet surfaces unless specifically designed for such use.
- Do not allow to be used as a toy. Close attention is necessary when used by or near children.
- Use only as described in this manual. Use only manufacturer's recommended attachments.
- Do not use with damaged cord or plug. If appliance is not working as it should, has been dropped, damaged, left outdoors, or dropped into water, return it to a service center.
- Do not pull or carry by cord, use cord as a handle, close a door on cord, or pull cord around sharp edges or corners. Do not run appliance over cord. Keep cord away from heated surfaces.
- Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord.
- Do not handle plug or appliance with wet hands.
- Do not put any object into openings. Do not use with any opening blocked; keep free of dust, lint, hair, and anything that may reduce air flow.
- Keep hair, loose clothing, fingers, and all parts of body away from openings and moving parts.
- Do not pick up anything that is burning or smoking, such as cigarettes, matches, or hot ashes.
- Do not use to pick up flammable or combustible liquids, such as gasoline, or use in areas where they may be present.
- Do not pick up toxic material, such as chlorine bleach, ammonia, or drain cleaner.
- Do not use without filters in place.
- Turn off all controls before unplugging.
- Use extra care when cleaning on stairs.
Package Contents
Verify that all components are present and undamaged upon unpacking:
- Vacuum Cleaner Unit x1
- Narrow Nozzle x1
- Wide Nozzle x1
- Extension Tubes x3
- Suction Hose x1
- Vacuum Base (4 parts) x1
- Wheels x4
- HEPA Filter x1
- Foam Filter x1

Setup and Assembly
- Attach Wheels: Insert the four wheels into the designated slots on the vacuum base. Ensure they click securely into place.
- Assemble Base: Connect the vacuum base parts if necessary, then attach the assembled base to the bottom of the tank.
- Install Filters:
- For Dry Vacuuming: Install the HEPA filter onto the motor head. Ensure it is seated correctly.
- For Wet Vacuuming: Remove the HEPA filter and install the foam filter onto the motor head.
- Attach Motor Head: Place the motor head onto the tank and secure it with the side clamps.
- Connect Hose:
- For Vacuuming: Connect the suction hose to the inlet port on the front of the tank.
- For Blower Function: Connect the suction hose to the outlet port on the rear of the motor head.
- Attach Accessories: Connect the extension tubes to the hose, then attach the desired nozzle (narrow or wide) for your cleaning task.

Operating Instructions
1. Dry Vacuuming
- Ensure the HEPA filter is correctly installed.
- Connect the suction hose to the inlet port.
- Plug the vacuum cleaner into a suitable power outlet.
- Turn the power switch to the "ON" position.
- Begin vacuuming dry debris.

2. Wet Vacuuming
- Remove the HEPA filter and install the foam filter.
- Connect the suction hose to the inlet port.
- Plug the vacuum cleaner into a suitable power outlet.
- Turn the power switch to the "ON" position.
- Begin vacuuming liquids. The float valve will automatically stop suction when the tank is full.
- To empty the tank, unplug the unit, remove the motor head, and use the drain valve at the bottom of the tank.

3. Blower Function
- Ensure the tank is empty and dry, and the appropriate filter (HEPA or foam) is installed.
- Disconnect the suction hose from the inlet port.
- Connect the suction hose to the outlet port located on the rear of the motor head.
- Plug the vacuum cleaner into a suitable power outlet.
- Turn the power switch to the "ON" position to activate the blower.
- Use the blower to clear dust, chips, or debris from hard-to-reach areas.
4. Power Outlet (up to 2000W)
- The integrated power outlet allows for automatic synchronization with connected power tools (e.g., drills, sanders, saws) up to 2000W.
- Plug your power tool into the vacuum cleaner's power outlet.
- Plug the vacuum cleaner into a suitable wall outlet.
- When the power tool is switched on, the vacuum cleaner will automatically start.
- When the power tool is switched off, the vacuum cleaner will continue to run for a short period to clear the hose, then automatically shut off.
Maintenance
1. Filter Cleaning and Replacement
- Integrated Filter Cleaning System: During dry vacuuming, press the "PRESS" button on the motor head (Figure 5) to activate the filter cleaning function. This dislodges accumulated dust from the HEPA filter, maintaining suction power.
- Manual HEPA Filter Cleaning: For thorough cleaning, remove the HEPA filter. Tap it gently to remove loose dust. It can be washed with water; ensure it is completely dry before reinstallation.
- Foam Filter Cleaning: After wet vacuuming, remove and rinse the foam filter with water. Allow it to air dry completely before storage or next use.
- Replace filters if they are damaged or if cleaning no longer restores performance.


2. Tank Cleaning
- After wet vacuuming, always empty the tank using the drain valve and rinse it thoroughly with water.
- For dry debris, simply unclamp the motor head and empty the tank. Wipe the interior with a damp cloth if necessary.
- Ensure the tank is dry before storing or switching from wet to dry vacuuming.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Vacuum does not turn on. | No power supply; Power switch off; Faulty power outlet. | Check power cord and plug; Ensure switch is ON; Test outlet with another device. |
| Low suction power. | Clogged filter; Full tank; Blocked hose/nozzle; Improper filter for task. | Clean or replace filter; Empty tank; Clear blockages; Ensure correct filter (HEPA for dry, foam for wet). |
| Water leaks from tank. | Drain valve not closed properly; Tank damaged; Motor head not sealed. | Ensure drain valve is fully closed; Inspect tank for cracks; Re-seat motor head and clamps. |
| Vacuum stops during wet use. | Tank is full (float valve activated). | Empty the tank. |
| Power tool connected to outlet does not start vacuum. | Vacuum switch not in auto mode; Power tool faulty; Vacuum outlet faulty. | Ensure vacuum switch is set to the auto-start position (often indicated by a tool icon); Test power tool directly; Contact support if vacuum outlet is suspected faulty. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | LTOVI-1530 |
| Power | 1500 W |
| Suction Power | 18 kPa |
| Tank Capacity | 30 Liters |
| Voltage | 230 Volts |
| Power Outlet Max. Load | 2000 W |
| Filter Type | HEPA (washable), Foam |
| Hose Length | 1.5 Meters |
| Weight | 6.5 Kilograms |
| Dimensions (L x W x H) | 43 x 43 x 60 cm |
| Noise Level | 82 Decibels |
| Special Features | Wet/Dry Function, Blower Function, Integrated Power Outlet, Filter Cleaning System, Wheels, Bagless Design, Drain Valve |


Warranty and Support
LEHMANN products are manufactured to high-quality standards. In the unlikely event of a defect or malfunction, please refer to your purchase documentation for warranty details. For technical support, spare parts, or service inquiries, please contact your retailer or the LEHMANN customer service department. Contact information can typically be found on the LEHMANN official website or your purchase receipt.
Please have your model number (LTOVI-1530) and proof of purchase ready when contacting support.
Disposal
Do not dispose of electrical appliances as unsorted municipal waste. Use separate collection facilities. Contact your local government for information regarding the collection systems available. If electrical appliances are disposed of in landfills or dumps, hazardous substances can leak into the groundwater and get into the food chain, damaging your health and well-being.




