TS1212.pdf - 第3页

5 5. SET UP INSTRUCTIONS Refer to Figure 3.0 1. Install a new pinch tube in the valve. Follow ing instructions in Section 6. “Pinch tube replacement” on page 8. 2. If desired, moun t the valve to the bracket inc luded. 3…

1. SPECIFICATIONS

Size: 3.7” (94mm) long; 1.18”(30mm)

diameter

Weight: 0.18 lb (83g)

Fluid inlet port: Female luer lock

Fluid outlet port: Male luer lock

Air inlet port: 10-32 UNF-2B

Maximum fluid pressure: 60 psi (4.1 bars)

Minimum air pressure required: 50 psi (3.4 bars)

Wetted parts: Standard: Polyethylene

Optional: Polypropylene

Operating frequency: Exceeds 400 cycles/min.

Flow rate at 60 psi (water): 2050 ml/min.

Material viscosity range: Up to 45,000 Cps.

Dimensions are in inches (mm)

Figure 1.0

2.35(60)

2.90(74)- 3.7(94)

Ø1.18(30)

2.44(62)

MOUNTING HOLE

1/4-20

2. UNPACKING AND INSPECTION

Carefully unpack the valve and examine the items contained in the carton.

These will include:

• Valve Assembly

• Sample Pinch tubes and Needle Kit

• User guide

• Valve Air Hose

Inspect the unit for any damaged which may have occurred in transit. If such

damage has occurred, notify the carrier at once.

Claim for damage must be made by the consignee to the carrier, and should be

reported to the manufacturer.

3. DESCRIPTION

The TS1212 valve is designed to dispense low to medium viscosity material

with precise deposits over a wide range of shot sizes. An internal spring return

makes the valve fully adaptable for use with Techcon Systems time/pressure

controllers. A short opening stroke provides extremely fast, positive shut-off.

An external stroke control adjustment makes it easy for the operator to fine

tune shot sizes.

4. THEORY OF OPERATION

The TS1212 is a normally closed, disposable pinch tube valve. Air pressures

through port (1) pushes the piston assembly (2) away from the seat (3) allowing

fluid to flow from the valve fluid inlet port (4) to the valve fluid outlet port (5).

Relieving the input air pressure allows the spring (6) to return the piston back

to its position to close the fluid path.

Figure 2.0

5. SET UP INSTRUCTIONS

Refer to Figure 3.0

1. Install a new pinch tube in the valve. Following instructions in

Section 6. “Pinch tube replacement” on page 8.

2. If desired, mount the valve to the bracket included.

3. Connect fluid feed line to valve inlet port (1).

4. Install valve actuating air line to air inlet port (2)

5. Connect valve air line to an approved valve controller.

6. Set the fluid reservoir pressure. Do not exceed 60 psi (4.1bars)

7. Make sure all connections are tight

8. Place container under the valve outlet and activate the valve until the

fluid flows steady.

9. Attach appropriate dispense tip to the luer lock outlet fitting (3).

The amount of fluid that flows through the valve is determined by:

• Flow control adjustment- Turn adjustment screw (4)

counterclockwise to increase fluid flow rate and clockwise to

decrease fluid flow rate.

• Length of actuation, set at controller (Valve open time).

• Fluid reservoir pressure.

• Dispensing tip size.

Figure 3.0

6. TYPICAL SYSTEM SET UP

Figure 4.0

PULSED AIR

CONSTANT AIR

MATERIAL

PLANT AIR MUST BE PROPERLY

FILTERED AND DRY. IF NOT, SPECIFY

A 5-MICRON FILTER REGULATOR.

FLUID FEED SYSTEM

TECHCON SYSTEMS TS5130

CONTROLLER OR EQUIVALENT

TS1212

PINCH TUBE VALVE

7. TROUBLE SHOOTING

PROBLEM POSSIBLE CAUSE CORRECTION

Fluid pressure too low Increase fluid pressure

Operating pressure too

low

Increase air pressure to 50 psi

(3.4 bars)

Dispense tip clogged or

damaged

Replaced tip

Fluid cured in pinch

tube

Replace with new tube

No Fluid Flow

The stroke adjustment

closed

Open stroke adjustment

counterclockwise

Fluid pressure

fluctuating

Make sure fluid pressure is

constant

Valve operating

pressure is too low

Increased valve pressure to 50

psi (3.4 bars)

Valve open time is not

consistent

Check to make sure the valve

controller is providing a

consistent output

Inconsistent

Fluid Flow

Air trapped in fluid line Purge valve

Decrease in fluid flow

Pinch tube lose its

flexibility

Replace with new tube

Fluid drools after the

valve closes,

eventually stopping

Air trapped in fluid line Purge valve

Steady drip

Pinch tube is not

installed properly

Re-install tube, follow

instructions

8. PINCH TUBE REPLACEMENT

CAUTION: Make sure the fluid pressure is released before disassemble the

valve.

Refer to figure 5.0

1. Release fluid pressure.

2. Disconnect fluid line.

3. Disconnect valve air line.

4. Remove the valve cap (1), the spring (6) and the shut off piston (5)

5. Lift the two ends of the tube (2) out of the grooves of the valve body (3).

6. Hold the pinch tube at the female luer lock fitting and pull it out of the valve

body.

7. Dispose the used pinch tube in an appropriate waste container.

8. Install a new pinch tube by inserting the male fitting of the tube through the

valve body.

9. Snapped the both ends of the pinch tube into the groove of the valve body.

10. Reinstall the shut off piston, the spring and the flange.

Figure 5.0