Ban Seok BV-302 User manual

EQUIPMENT
User Manual
BV-302/Needle-off type dispensing valve

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Contents
1. Safety ··············································································································3
1.1 For your safety ····························································································3
1.2 Valve overuse harzard ················································································3
1.3 Others ·········································································································3
2. Specification ····································································································4
3. P inciple ···········································································································4
4. Installation & Ope ation ················································································· 5
4.1 Connecting lines ······················································································· 5
4.2 Operation ···································································································5
5. Maintenance & Cleaning ·················································································6
5.1 toring after use ·························································································6
5.2 Check items while operating ····································································· 6
5.3 Exploded view ··························································································· 6
5.4 Cleaning ···································································································· 7
5.5 List of spare parts ······················································································ 7
6. T ouble shooting ···························································································· 7
7. Outside view ····································································································8

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1. Safety
Before installation and using our dispensing valve BV-305, please be carefully
aware of this user manual
1.1 Fo you safety
 If the fluid splashes up to your eyes or skin, it can cause a serious injury.
 Handle with extreme care not to be in contact with liquid in case of nozzle
exchange or cleaning.
 Make sure that pressure must be released before the nozzle is removed
when you exchange a nozzle.
1.2 Valve Ove use Haza d
 If a valve is damaged due to over-pressure, unauthorized alteration of parts,
and overuse, it may cause a danger by exploding or leaking (explosion or
leakage may occur).
 Do not make any kind of unauthorized alterations. We are not responsible
for any repairs, after-sales service caused by them.
 This valve operates delivery air pressure under 7kgf/cm2. Do not exceed this
operation pressure.
 The fluid pressure must not exceed 30kgf/cm2. Or it can cause serious
damages and disorder.
1.3 Othe s
 High pressure material can be leaked if a hose is damaged or worn.
 Check a hose for any worn-downs, damages, or swollen before use.
 Please change a hose immediately if any malfunction is found.
 Prevent leakage from loosened joints by tightening before use.

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2. Specification
Method of Operation Needle-off
Material of wetting part U 316, U 304
Volume 8ℓ/min
Type of Operation A,B
Liquid Input PT 1/8”
Applied Materials Grease
ilicone, Oil
Bond
Maximum fluid pressure 40 kg/cm2
3. P inciple
The valve open air pressure forces the internal
piston to move up, and the needle to open and
permit fluid flow. When the valve close air pressure
forces the internal piston to move down, and the
needle closes, stopping the fluid flow and being
pushed a slight amount of fluid.
The amount of fluid dispensed will depend on the
time the valve is open, the viscosity of the fluid, the
air pressure in the fluid reservoir and the dispensing
tip size.
Flow rate is a function of reservoir pressure, tip
size and fluid viscosity.
Needle-off type valves have a sneakhead at the end point due to the
different of the space which is get the needle moves down. And the
valve is suitable for small amount per shot.
Open Close

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4. Installation & Ope ation
4.1 Connecting Lines
1) Connecting Air-pressure lines
- traightly insert the tube into the air
fitting until it gets installed inside
- Valve open line(A) is connected to the
“open” port on the TAD-200V(controller).
- Valve close line(B) is connected to the
“air out” port on the TAD-
200V(controller).
- Pull the tube gently in order to make
sure that it is safe.
2) Connecting Fluid Line
- The inlet of Fluid line(C) fits in PT 1/8”
line.
3) Caution
- When you cut the tube, make the
severed side a right angled out and the
use of a tube-cutter is recommended.
- Install the fluid line in oblique with the air
line in order to minimize the intervention.
4.2 Ope ation
1) Preparing to use
- Open the fluid line and valve open air
line(A) of the valve.
- Keep dispensing until the consistent
drippings in order to eleminates the air
in the valve.
- And then stop dispensing.
2) Control of the dispensing volume
- Adjust the pressure of fluid inlet.
- Change the nozzle tip(D) to be
compatible to preventing from air
bubbles.
A
B
C
D

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5. Maintenance & Cleaning
5.1 Sto ing afte use
- To avoid the nozzle tip contact air, put an end-cap on the nozzle or keep
a nozzle in the grease.
- Perform the cleaning process(see Chapter 5.4).
5.2 Check items while ope ating
- Make sure that air supply is in good condition.
- Check other connecting appliances that are properly turned off.
- Be sure that end of nozzle is not clogged with hardened fluid.
5.3 Exploded view
- The user’s arbitrary disassembly is not recommended.
1 Needle adapter B 9 Cylinder housing A6061
2 Wrench bolt M3x15L 10 O-ring P6
3 Under cap U 303 11 Cylinder rod U 303
4 eal cap Teflon 12 pring U 303
5 O-ring P4 13 Upper cap A6061
6 Wrench bolt M3x20L 14 Nut U 303
7 Middle cap A6061 15 Adjustment bolt U 303
8 O-ring P14

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5.4 Cleaning
- top providing liquid and release pressure in the fluid chamber.
- Connect the cleaning line to fluid inlet port and add pressure.
- According to chapter 4.2, dispense cleaning liquid instead of fluid.
5.5 List of spa e pa ts
No. Name No. Name
4 eal cap 10 O-ring P6
5 O-ring P4 11 Cylinder rod
8 O-ring P14
6. T ouble shooting
Item Cause T eatment
Cylinder rod(11) does not work. upply the air into valve on/off line.
The fluid is cured. Clean the valve.(see chapter 5.4)
Pressure the fluid reservoir. The fluid does not supply.
upply the fluid.
No dispensing
The controller is turned off. Turn on the controller.
The needle adapter(1) is
unfasten.
Clean the valve.(see chapter 5.4)
And fasten the adapter(1).
Fluid leakage
from needle
adapter(1) The Cylinder rod(11) is worn
out.
Clean the valve.(see chapter 5.4)
And replace the rod.
Fluid leakage
between under
cap(3) and
middle cap(7)
The lifetime of seal cap(4) and
o-ring(5) is end.
Clean the valve.(see chapter 5.4)
And then replace seal cap(4) and
o-ring(5).

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7. Outside view