These vacuum cleaners with special filter nets designed for removing dust and solid impurities have been designed and produced.

Different vacuuming purposes

These vacuum cleaners with special filters designed for removing dust and solid impurities have been designed and produced.

 

Attention!Different filters should be selected for different materials to be vacuumed.

Using a dedicated filter for other contaminants is inappropriate.

The vacuum cleaner is designed for professional users.

1.4 Suitable environment

To ensure the correct use of the vacuum cleaner, it must be protected from natural environmental erosion (rain, hail, snow, fog, suspended dust, etc.), and should be placed in an environment with a temperature between 5°C and 45°C, and relative humidity not exceeding 70%.

The working environment must be clean and free of explosive gases.

1.5 Noise level

The noise level meets the national standard requirements.

Noise tests have been conducted on specific vacuum cleaners, with only

76 decibels (A)According to relevant regulations, in environments with noise exceeding 85 decibels, staff must wear special protective devices.

Attention!

If such working conditions exist, special protective devices must be provided for staff and they must be informed of the noise-related hazards.

1.6 Machine storage

Remove the filter, clean it thoroughly, empty the dust container, and store the vacuum cleaner indoors at a temperature between 0°C and 40°C, covered with a nylon cover to prevent dust.

1.7 Machine disposal

If the machine is scrapped, all components of the vacuum cleaner must be disposed of through appropriate channels under legal conditions. Before disposal, all plastic and rubber parts must be separated from electrical materials.

If recycled by a special center, parts made of plastic, aluminum, and steel can be reused.

Technical parameters

 

1.8  Model

Power (KW)	NT228	NT308	NT408	NT558	NT758
Power supply (V/Hz)	2.2	3	4	5.5	7.5
380/50	Vacuum pressure (mmH20)	Vacuum pressure (mmH20)	Vacuum pressure (mmH20)	Vacuum pressure (mmH20)	Vacuum pressure (mmH20)
Maximum flow rate (m³/h)	2500	3300	3700	4400	4740
Filter area (㎡)	370	400	450	600	650
Dust container volume (L)	2.5	2.5	2.5	2.5	2.5
Noise (dB)	100	100	100	100	100
Suction diameter (mm)	68	72	76	78	80
Dimensions (cm)	50	50	50	50	50
110*58*129	Weight (KG)	Weight (KG)	Weight (KG)	Weight (KG)	Weight (KG)
1.9 Warranty terms	120	125	130	135	160

From the shipping date on the VAT invoice, the company guarantees a 3-month warranty for the purchased vacuum cleaner.

The warranty is considered void in the following situations: if repaired by unauthorized third parties or if non-authorized parts or accessories are installed; if the machine's serial number has been altered or is missing.

The company guarantees free repair or replacement of any main components with quality issues during the warranty period. Repairs must be done at the company's repair points or at our authorized service centers, and shipping costs for machines sent to us for repair must be prepaid (shipping costs are to be borne by the buyer unless otherwise agreed).

The warranty does not cover any cleaning parts.

Any quality issues related to materials and production defects can only be checked on our professional equipment or tested at our authorized service centers. If it is not a production quality issue from the company, all related repair and replacement costs will be borne by the buyer.

The issued invoice must be presented to the technician responsible for repairs along with the machine itself.

The warranty does not cover: accidental damage caused by transportation, carelessness, or improper handling; damage caused by not following the instructions in the manual; damage caused under abnormal operating conditions. The company is not responsible for warranty claims due to human damage or improper use.

Troubleshooting

Fault

Possible causes	Solutions	The machine cannot start
No power supply	Check the power supply.	Check if the plug and power cord are intact. Contaminants are leaking
There are small holes in the vacuum hose.	Replace with a new hose.	The filter holes have enlarged.
	Replace with a new filter.	The used filter is not suitable for filtering this contaminant.
	Replace with a filter suitable for this contaminant.	The vacuum cleaner cannot operate normally.
There are holes or blockages in the vacuum hose.	Check the vacuum hose; if it cannot be reused, replace it with a new one.	The dust container is full.
	Empty the dust.	The filter is clogged.
	Replace the filter.	The sealing strip is old.
	Clean the filter; if it cannot be reused, replace it with a new one.	Air leakage.
	Check the sealing cap, screw tightness, dust container, or filter box.	检查密封扣，螺丝松紧，集尘箱或过滤箱
The engine noise is very loud	Contact the NAIKE after-sales service department