KÄRCHER

General Notices

Before operating the equipment for the first time, read this instruction manual and the attached safety instructions. Follow these documents. Keep both manuals for future use or for subsequent owners.

Failure to comply with the instruction manual or safety instructions can cause damage to the equipment and create hazards for the operator and other persons.

Immediately inform your dealer if any damage has occurred during transport.

Check if any accessories are missing from the package contents or if there is any damage.

Environmental Protection

The packaging materials are recyclable. Dispose of packaging in an environmentally friendly manner. ♻️

Electrical and electronic equipment contains recyclable materials and often components, such as batteries, accumulators, or oil, which pose a potential risk to human health or the environment if handled or disposed of improperly. However, these components are necessary for the proper functioning of the equipment. Equipment identified with this symbol ❌ cannot be disposed of with household waste.

Substance Information (REACH)

Current information on contained substances can be found at: www.kaercher.com/REACH

Intended Use

WARNING: Health Risks

Do not use the equipment for vacuuming hazardous dust.

This vacuum cleaner is designed for dry and wet cleaning of floor surfaces and walls.

This equipment is suitable for industrial use, e.g., in construction sites, industrial plants, workshops, and rental businesses.

Equipment Description

Figure A: Main Components

A diagram showing the main components of the vacuum cleaner with numbered labels pointing to parts such as the suction head, dirt container, hose, tubes, and wheels.

Parts List:

• 1 Anchor screw
• 2 Cartridge filter
• 3 Float (mechanical overflow protection)
• 4 Suction head
• 5 Suction hose
• 6 Push handle
• 7 Suction head latch
• 8 Dirt container
• 9 Swivel castor
• 10 Chassis
• 11 Suction tube
• 12 Floor nozzle for liquid suction
• 13 Floor nozzle for dry suction
• 14 Suction tube
• 15 Hose/cable holder
• 16 Carrying handle
• 17 Bend
• 18 Turbine switch for suction unit 1
• 19 Turbine switch for suction unit 2
• 20 Suction tube holder with floor nozzle
• 21 Floor nozzle holder
• 22 Suction tube holder
• 23 Bend plug
• 24 Drain hose (NT 70/2, NT 90/2 only)
• 25 Crevice nozzle holder
• 26 Rating plate
• 27 Power cord

Preparation

1. Unpack the equipment and assemble the accessories. (Refer to Figure B)

Figure B: Unpacking and Accessory Layout

Shows the vacuum cleaner and its accessories laid out, ready for assembly.

Commissioning

Dry Vacuuming

CAUTION: Fine dust hazard. Risk of damage to the suction motor.

Ensure that the cartridge filter and, if necessary, a membrane filter (special accessory) are inserted when vacuuming dry.

For fine dust vacuuming, a fleece filter bag (special accessory, NT 50/2 only) can also be used.

Fleece Filter Bag Assembly (NT 50/2 only)

1. Unlock and remove the suction head.

2. Insert the fleece filter bag (special accessory) and ensure it is correctly seated.

(Refer to Figure C)

3. Replace and lock the suction head.

Figure C: Fleece Filter Bag Installation

Illustrates the process of inserting the fleece filter bag.

Membrane Filter Assembly

1. Unlock and remove the suction head.

2. Pull the membrane filter (special accessory) over the container rim and ensure it is correctly seated.

(Refer to Figure D)

3. Replace and lock the suction head.

Figure D: Membrane Filter Installation

Shows how to fit the membrane filter onto the container.

Wet Dirt Suction

During wet dirt suction, the cartridge filter can be replaced by a coarse dirt filter (special accessory) or a membrane filter (special accessory).

CAUTION: Liquid dirt hazard. Risk of damage to the suction motor.

Ensure that the cartridge filter, a coarse dirt filter (special accessory), or a membrane filter (special accessory) is used for wet dirt suction.

The fleece filter bag (special accessory) must always be removed for wet dirt suction.

After finishing wet dirt suction: Clean the float and the container with a damp cloth and dry them.

Coarse Dirt Filter Installation

The coarse dirt filter must be replaced by a cartridge filter and, if applicable, a membrane filter when switching from wet to dry suction.

1. Unlock and remove the suction head.

2. Unscrew the anchor screw and remove the cartridge filter.

3. Mount the coarse dirt filter (special accessory).

(Refer to Figure E)

4. Tighten the anchor screw.

5. Replace and lock the suction head.

Figure E: Coarse Dirt Filter Installation

Depicts the steps for installing a coarse dirt filter.

Membrane Filter Assembly

Refer to "Dry Vacuuming" section.

Dirty Water Purging (NT 70/2, NT 90/2 only)

WARNING: Improper disposal of wastewater. Environmental contamination.

Observe local regulations for wastewater treatment.

1. Empty the dirty water using the drain hose. (Refer to Figure F)

Figure F: Dirty Water Purging

Illustrates emptying dirty water via the drain hose.

Clip Connection

The suction hose is equipped with a clip system. All accessories with a 40 mm nominal width can be connected. (Refer to Figure G)

Figure G: Clip Connection System

Shows how accessories connect to the suction hose.

Handling

Connecting the Equipment

1. Plug in the power connector. ?

2. Connect the equipment.

Cleaning Service

1. Perform cleaning.

Emptying the Dirt Container

The suction channel is equipped with a float. When the maximum permitted level of dirty water is reached in the container, suction is interrupted.

1. Disconnect the equipment.

2. Empty the container.

Disconnecting the Equipment

1. Disconnect the equipment.

2. Unplug the power connector.

After Each Service

1. Empty the container.

2. Clean the interior and exterior of the equipment by vacuuming and wiping with a damp cloth.

Storing the Equipment

1. Store the floor nozzles, suction tubes, suction hose, bend, crevice nozzle, and power cord as shown in the figure. (Refer to Figure H)

Figure H: Storage of Accessories

Depicts how accessories and the cable should be stored on the unit.

2. Place the equipment in a dry area and protect it from any unauthorized use.

Transport

PRECAUTION: Weight hazard. Risk of injury and damage.

Consider the weight of the equipment during transport.

1. For long distances, transport the equipment by pushing it using the push handle.

2. When transporting the equipment in vehicles, secure it to prevent slipping and tipping, in accordance with current directives.

Storage

PRECAUTION: Weight hazard. Risk of injury and damage.

Consider the weight of the equipment for storage.

The equipment can only be stored indoors.

Care and Maintenance

DANGER: Electric shock hazard. Risk of injury from touching live parts.

Disconnect the equipment.

Unplug the power connector.

Changing the Cartridge Filter

1. Unlock and remove the suction head.

2. Unscrew the anchor screw, remove the cartridge filter, and replace it with a new one.

3. Tighten the anchor screw.

4. Replace and lock the suction head.

Cleaning the Float

1. Unlock and remove the suction head.

2. Unscrew the anchor screw and remove the cartridge filter.

3. Clean the float with a damp cloth.

4. Insert the cartridge filter.

5. Tighten the anchor screw.

6. Replace and lock the suction head.

Troubleshooting

DANGER: Electric shock hazard. Risk of injury from touching live parts.

Disconnect the equipment.

Unplug the power connector.

Suction Turbine Not Working

1. Check the plug and the power supply fuse.

2. Check the power cord, power connector, and the equipment's float.

3. Connect the equipment.

Suction Turbine Works, But Equipment Does Not Suck

1. Disconnect the equipment and wait 5 seconds. Reconnect the equipment.

2. Release any stuck float and clean it with a damp cloth. Check the float's freedom of movement.

Float Closes Suction Channel

1. Empty the dirt container.

Suction Power Reduced

1. Clear any blockage in the suction nozzle, suction tube, suction hose, or cartridge filter.

2. NT 50/2 only: Replace the full fleece filter bag (special accessory).

3. Clean the membrane filter (special accessory) with running water or replace it.

4. Replace the cartridge filter.

5. NT 70/2, NT 90/2 only: Check the seal of the drain hose.

Dust Escaping During Suction

1. Check the correct mounting position of the cartridge filter.

2. Replace the cartridge filter.

Water Escaping During Suction

1. Release any stuck float and clean it with a damp cloth. Check the float's freedom of movement.

After-Sales Service

If a fault cannot be resolved, the after-sales service must inspect the equipment.

Warranty

The warranty conditions specified by our authorized dealer apply in each country. We will rectify any faults in your equipment free of charge within the warranty period, provided the cause is due to a manufacturing or material defect. In case of warranty, please contact your dealer or the nearest authorized after-sales service, presenting the purchase invoice. (Address on the reverse side)

Accessories and Spare Parts

Use only original accessories and spare parts; these ensure safe and reliable operation of the equipment. Information on accessories and spare parts can be found at www.kaercher.com.

EU Declaration of Conformity

We hereby declare that the machine designated below complies, with respect to its design and type of construction, as well as in the version placed on the market by us, with the essential health and safety requirements of the relevant EU directives. Any modifications not agreed upon by us will render this declaration invalid.

Product: Wet and Dry Vacuum Cleaner

Type: 1.667-xxx

Applicable EU Directives

• 2006/42/EC (+2009/127/CE)
• 2011/65/UE
• 2014/30/UE

Applied Harmonised Standards

• EN IEC 63000: 2018
• EN 55014-1: 2017 + A11: 2020
• EN 55014-2: 2015
• EN 60335-1
• EN 60335-2-69
• EN 61000-3-2: 2014
• EN 61000-3-3: 2013
• EN 62233: 2008

Applied National Standards

The undersigned act on behalf and with the authorization of the management.

H. Jenner
Chairman of the Board of Management

S. Reiser
Director Regulatory Affairs & Certification

Person responsible for documentation:
S. Reiser
Alfred Kärcher SE & Co. KG
Alfred-Kärcher-Str. 28 - 40
71364 Winnenden (Germany)
Tel.: +49 7195 14-0
Fax: +49 7195 14-2212
Winnenden, 2020/10/01

Technical Data

Technical modifications reserved.