StrongBond VFG-75E User manual

Operation Manual

Strongbond Vacuum Cleaner

Model：VFG-75E

Flooring Wholesale Limited

T/A Look Floors

9 Industry Road,

Penrose, Auckland 1061,

New Zealand

VFG-75E Strongbond Vacuum Cleaner

Safety Precautions

WARNING! Read all instructions. As with all machinery there are certain hazards involved

with operation and use of the machine. The following basic safety precautions should be

followed at all times to reduce the risk of fire, electric shock and serious personal injury to

you or others. Keep these important operating instructions with this product.

Must read this operating manual carefully before usage.

Warning symbol

Operators must do not carry out the designated operating steps

Operator must read the designated operating steps before usage.

Safety precautions

People who do wiring and inspecting must have the professional experience and expertise.

The power lines must not be placed at the place where workers can easily step on; once

some damages found on the power lines, they must be replaced with new ones. .

Must use the power cord originally installed in the machine; please contact the

manufacturer in case of extending the power line.

Do not do wiring in a humid environment or with wet hands.

Be sure the power plug has ground wire and the power socket has circuit breaker

Please plug out if don’t use the machine for a long time. Otherwise, it will reduce the

insulating property and lead to electric shock, electric leakage or fire accident.

Do not climb, stand or place stuffs on the machine during its running

Do not try to repair or refit the machine personally if something wrong goes with it; please

contact the manufacturer for discussing and choosing the best maintenance solution

Suggest using the original filter cartridge or bag if needed.

This operating manual should be placed with an unbroken condition near to the machine

for the convenience of reading by the operator.

Please cut off the powder before the overhauling.

The casters must be in the state of being stopped before the machine runs.

This vacuum must not be plugged in the socket that other electric equipment are using,

just in case of fire accident or electric shock due to the overloaded current.

The machine cannot suck up the kind of oily or flammable and combustible smoke dust.

Never leave tool running unattended. Turn power“off”. Do not leave tool until it comes

to a complete stop.

VFG-75E Strongbond Vacuum Cleaner 

 
CONTENT
Product Information.................................................................................................4 
Working principle ....................................................................................................4 
1 Filtering process................................................................................................4 
2 Cleaning process of Filter.................................................................................5 
Product structure and characteristics .......................................................................5 
1 Exterior Structure..............................................................................................6 
2 Manual Filter Cleaning Structure......................................................................6 
3 Filtration System...............................................................................................6 
4 Dust Collection Bag..........................................................................................8 
5 Pressure Relief Valve........................................................................................8 
6 Control Box.......................................................................................................8 
7 Turbine..............................................................................................................8 
Operations…………………………………………………………………………9
1 Manual Air-pulse back Operation.....................................................................9 
2 Operation of the Control Board ........................................................................9 
3 Operation of Dust Cleaning……………………………………………….....10 
4 Operation of Pressure Relief Valve……...…………...…………………...…12 
VFG-75E Circuit Diagram.....................................................................................14 
Routine maintenance and inspection .....................................................................15 
1 Daily maintenance ..........................................................................................15 
2 Troubleshooting and elimination method .......................................................15 
Technical Parameter...............................................................................................16 
Main Parts List.......................................................................................................17 
9Machine Warranty..................................................................................................19 
 
 

VFG-75E Strongbond Vacuum Cleaner

1 Product Information

VFG-75E Vacuum cleaner is designed for the floor grinding and polishing industry

for superfine dust collection. The characteristics of the machine include strong suction,

two-stage filter units, stable and reliable, space saving, flexible mobility and easy

operation. It is a three-phase machine that is compatible with diamond surface

grinders and other floor grinding & polishing machines. It provides 24 hours

continuous superfine dust suction and collection.

2 Working principle

2.1 Filtering process

The filter unit consists of one unit of a star shaped pre-filter and two units of HEPA

filter cartridges. Under the action of the turbine blower, the dusty air will enter the

pre-filter first. Directly the bigger particles will drop down to the bottom, whereas the

superfine dust will go through the pre-filter and into the HEPA filter cartridge units.

The clean air will come out from the air outlet and leaving the superfine dust behind

which attaches to the HEPA filter cartridges.

Fig. 2.1 Filtering process

Dusty Air

Dust Collection

Purified Air

VFG-75E Strongbond Vacuum Cleaner

2.2 Cleaning process of Filter

The pre-filters can be cleaned from outside the barrel by the Jet pulse negative pressure.

Before the cleaning process, block the air inlet first, then pull the vibration lever over

and over again. The HEPA filter cartridges should be cleaned regularly depending on

usage. To clean the HEPA filter, take it out of the machine and tap the dust out. It is

important to clean the filters to ensure the effective cleaning of the machine and to

prolong the life of the machine

Dust Collection

Manual air pulse system

3 Product structure and characteristics

Main parts

Fig. 2.2 Dust cleaning process

VFG-75E Strongbond Vacuum Cleaner

3.1 Exterior Structure

VFG-75E industrial vacuum cleaner has a simplified design that gives excellent heat

dissipation to the turbine. The prominent advantage of this model is the use of a

designed continuous packing bag to collect the dust, which largely decrease the volume

and weight, so that it could be easy for using. The main body adopts the SPCC metal

plate with thickness of 2 mm. This ensures good endurance and heat resistance for the

whole machine and thereby guarantees the structural strength. In addition, the metal

plates are cut by laser cutting machine that greatly improve its size accuracy. For the

machine surface preparation, we adopted the process of spraying and high temperature

baking that provides a shining surface and a beautiful appearance with durability.

图3.1 主要部件介绍

Fig. 3.1 Main Parts

Upper Cover

Filter bag

Barrel

Air Inlet

Long tube Plastic bag base

Dust Collection

8 inch wheel

PU Hose

Manual air pulse back

device

Bend pipe handrail

Filter Cartridge

Turbine

U shape base parts

4 inch wheel with

brake

VFG-75E Strongbond Vacuum Cleaner

3.2 Manual Filter Cleaning Structure

3.3 Filtration System

VFG-75E vacuum has two-stage filtering units. The first stage will be the Anti-static

Filter cartridge which can filter the dust particle size of 3.0μm with filter efficiency up

to 99%. The secondary stage is the cartridge filters with polyester fiber material which

is imported from Toray Industries in Japan. This cartridge filter coated with PTFE film

can ensure the filter efficiency up to 99% for dust particle size of 0.3μm. This kind of

cartridge filter can effectively clean the PM2.5.

Fig. 3.4 –Filter Bag

Fig. 3.2 Filter cleaning

structure

Fig. 3.4 –Cartridge Filter

VFG-75E is installed with a mechanical airflow

reversing structure that conforms to the ergonomic

design. Such unique manual filter cleaning system can

effectively clean the dust accumulated on the surface

of the filter cartridge over time. The user could easily

clean up the filter cartridge according to the job

requirements. It is a very cost-effective and handy

design.

VFG-75E Strongbond Vacuum Cleaner

3.4 Dust Collection Bag

3.5 Pressure Relief Valve

Fig. 3.6 Pressure Control Valve

3.6 Control Board

3.7 Turbine

Fig. 3.5 dust collection bag

VFG-75E uses the continuous packing bag

that could be hooked and buckled up on a tube

base that can be easily fixed on the dust outlet.

The continuous packing bag is a foldable long

tube plastic bag that can be pulled out

continuously.

Fig. 3.7 Control Board

Fig. 3.8 Turbine

This pressure relief valve in the vacuum is

specially designed to prevent the turbine from

being burnt out when the vacuum overheats. If

the pressure inside the vacuum reaches to that

set in the valve, it will automatically open the

valve to release the pressure to protect the

turbine. At the same time, it cools off the

turbine.

The turbine in the VFG-75E vacuum has the international

advanced technology of precision casting aluminum alloy.

It completely conforms to the standard of IP54 and F

insulation level. In addition, it has high voltage with

double frequency and provides 24 hours continuous work

and strong suction.

VFG-75E uses IP65 electric control board.

The control board is waterproofed,

dustproofed, anti-impact, insulated with

plastic screws to prevent rust formation. The

pressure gauge reads real-time pressure.

VFG-75E Strongbond Vacuum Cleaner

4Operations

4.1 Manual Air-pulse back Operation

Close the inlet using the block plate on air inlet, let the machine build up vacuum for a

few seconds and then pull the rod repeatedly. The filter will be pulsed sequentially by a

sudden burst of air from the flow-back air inlet. This mechanical filter cleaning process

ejects all the dust from the surface of the filter, allowing for a very effective dust

cleaning result.

4.2 Operation of the Control Board

Just simply connect the three-phase four-wire system of the machine, then it can

be used.

Sealed and static

Half pulled

Full pulled

Fig. 4.1Air pulse back Demonstration

Fig. 4.2 Control board

VFG-75E Strongbond Vacuum Cleaner

Connecting the power supply (four-pin plug)

Open the end cover of the four-pin socket on the machine and directly plug in with

the four-pin plug, and then connect the other end of wire to the power supply.

Engine Start (start button)

When the power is on, press the switch with the “on”status to start the engine. To

turn off the engine, press the switch with the “off”status, and the engine will stop.

4.3 Operation of Dust Cleaning

Two areas need to be cleaned: the first area to clean up is the filter bag and collection

bag; the second area to clean up is the cartridge filters.

4.3.1 Operation of the Collection Bag

The foldable long plastic bag tube can be continuously pulled out. When it collects a

certain amount of dust, it can be sealed by the nylon cable tie and then cut off with a

scissor. See the photos below:

Step 1

Fig 4.3 Operations

Step 2

Step 3

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