User manual EFD 741MD-SS INSTALLATION GUIDE
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EFD 741MD-SS MAINTENANCE GUIDE (128 ko)
Manual abstract: user guide EFD 741MD-SSINSTALLATION GUIDE
Detailed instructions for use are in the User's Guide.
[. . . ] The 741MD-SS provides exceptional control and the absolute minimum dead fluid volume.
Stroke reference ring Barrel reservoir Control air hose
Fluid body Inlet fitting
Dispensing tip
10
40
To exhaust
50
60
To pressurize
50
40
60
30
5 2 2
30
3
4
70
3
4
70
5
6
90
20
80
80
20
6
90
1 7
1 7
0
0
0
10
50
40
60
50
40
60
30
Installation
5 2
20
30
3
4
70
3
4
70
5 2
20
6
6
90
90
1 7
1 7
10
0
10
10
80
80
0
10 0
0
10 0
30
5 2
20
30
Prior to installing this valve, please read the associated reservoir and valve controller operating instructions to become familiar with the operation of all components of the dispensing system.
6
20
90
7
0
10 0
7
10 0
50
40
60
50
40
60
30
30
3
4
70
3
4
70
5 2
20
5 2
20
6
6
90
7
7
10 0
0
0
10 0
90
1
1
0
90
10
10
3
50
40
60
50
40
60
3
4
70
1
9
10
3
4
70
5
2 6
80
80
1
10
80
80
10
10
1. 2.
Mount valve with an EFD universal valve mount (#7002VM) or other fixture. Connect valve control air line to ValveMateTM controller (or other pneumatic switch) used to control operating air to the valve. [. . . ] Set valve control air pressure at 70 psi (4. 8 bar). Refer to valve controller operating manual.
7
Open Close
adjustment knob
8
Open Close
6
6.
7. 8.
11
Open the valve with an air pulse long enough to fill the valve and start fluid flow. Test the dispensed amount with a nominal time setting.
9.
12
Set desired deposit size by changing tip size, reservoir pressure, needle stroke and valve open time.
10.
How the Valve Operates
Input air pressure at 70 psi (4. 8 bar) retracts the piston and needle from the needle seat in the dispensing tip , permitting fluid flow through the dispensing tip . Once the cycle is complete, air pressure is exhausted, causing the piston spring to return the needle back to its position in the dispensing tip, stopping fluid flow. When the dispensing tip is removed, the needle seats into a secondary Teflon® seat , stopping fluid flow during tip replacement. The amount of fluid dispensed will depend on the time the valve is open, fluid reservoir pressure, dispensing tip size, needle stroke and fluid viscosity.
open closed
ValveMate Concept
The ValveMate 7000 provides easy adjustment of valve output for maximum end-user convenience and efficiency. Valve open-time is the primary control of deposit. The 7000 puts push-button adjustment of valve open-time where it needs to be at the valve. Deposit size can be programmed by pressing the PROGRAM button in the SETUP mode. This affords an easy starting point for selecting deposit size. Note: The EFD Ultra TT 325 and 525 XYZ automated dispensing systems have integrated ValveMate controllers for operating all EFD dispense valves.
Steady Test Time Set Clear Fast Slow POWER RUN SETUP CYCLE
®
A NORDSON COMPANY
Function Indicators Pressure/Time Toggle Emergency Stop
VALVEMATE 7000
Run Setup
Purge Program
Fast Slow Time Set
Pressure Time
STOP
Rear Panel Control Pad air input set time power input timer bypass (voltage selector) display pressure (psi, bar) air output to valve TEACH program I/O connector with alarm test cycle output (<60 psi) purge connector for reset optional foot pedal
www. efd-inc. com technical@efd-inc. com
USA 800-556-3484 Europe +44 (0) 1582 666334 Asia +86 (21) 5854 2345
Calibration Feature The stroke control reference ring of each 741MD-SS valve is factory calibrated to the zero position. Slight internal variations in dispensing tips may require the stroke control to be recalibrated when tips are changed. Make a note of the current stroke setting number. Turn the calibration knob (inner) counterclockwise one full turn. Install the new dispensing tip and ensure that the retaining nut is tightened fully. Turn the stroke adjustment knob (outer) clockwise until it stops at the zero position. Turn the calibration knob clockwise until it stops. [. . . ] Install a dispensing tip and follow calibration procedure steps 3 to 5.
®
For consistent dispense valve operation and easy adjustment of valve output, EFD recommends using the ValveMate 7000 controller on all automatic, semi-automatic and benchtop applications. The EFD Ultra TT Series positioning systems incorporate dispensing control into the main system. Contact the EFD Dispense Valve Systems Group for details.
A NORDSON COMPANY
For EFD sales and service in over 30 countries, contact EFD or go to www. efd-inc. com/contact
EFD, Inc. [. . . ]
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