Nordson EFD 741V Series User manual

Introduction
The 741V Series dispense valve is simple to use and will
operate many millions of cycles without maintenance.
The 741V Series valves are designed to apply low-viscosity
fluids with accurate, extremely close repeat deposit control.
The 741V and 741V-SS valves are ideal for use on automatic
assembly machines.
Each valve comes equipped with a 5-foot actuating air hose
and male quick-connect, adjustable stroke control and fluid
inlet fitting. The dispensing tip adapter features a SafetyLok™
collar for secure dispensing tip attachment.
The 741V fluid body and air cylinder body are hard-coated
aluminum. The 741V-SS valve model has a Type 303 stainless
steel fluid body and air cylinder body.
®
A NORDSON COMPANY
Fluid
supply line
Control
air hose
Inlet fitting
Stroke control knob
Stroke reference ring
Air cylinder body
Fluid body
Dispensing tip
Tip adapter
741V Series Dispense Valve
INSTALLATION GUIDE
Electronic pdf files of EFD®manuals are also available at
www.efd-inc.com/manuals.html.
USA: 800-556-3484 or [phone]
Europe: 0800 585733 or [phone]
Asia: [phone]
[email protected] www.efd-inc.com

10
To pressurize
To exhaust
POWER
RUN
SETUP
CYCLE
Test Clear
Purge
Run
Setup Program
Fast Slow
Time Set
Steady
Fast Slow
Time Set
STOP
Pressure
Time
®
A NORDSON COMPANY
VALVEMATE
7000
20
0
5
741V Installation
1. Mount valve with an EFD universal
valve mount (#7002VM) or other
fixture.
2. Connect valve control air hose to
ValveMate™controller (or other
pneumatic switch) used to control
valve open time.
3. Connect the fluid supply line to
the fluid inlet fitting (#7543BP is
installed for use with 1/4” OD
tubing) and to the reservoir.
4. To prevent interference with
machine parts, the fluid body
can be rotated to any new 45º
position. Remove the two screws
that attach the fluid body to the air
cylinder body, change position,
reinstall and tighten screws.
5. Install appropriate size dispensing
tip. The enclosed dispensing tip
adapter accepts EFD SafetyLok
dispensing tips. Use small diameter
tips for thin fluids and larger tips
for thick fluids.
6. Fill reservoir by pouring fluid directly
into tank liner or manufacturer’s
bottle placed inside reservoir.
Secure cover prior to setting
pressure.
7. Set reservoir pressure to low for thin
fluids and higher for thick fluids.
8. Set the needle stroke, starting at
one full turn open.
9. Set valve control air pressure at
70 psi (4.8 bar). Refer to valve
controller operating manual.
10. 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.
5
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.
Open
Close
4
3
Set desired deposit size by adjusting reservoir
pressure, needle stroke and valve open time.
11
Air Output
ut
Exhaust
r
2
6
1
89
7

Input air pressure at 70 psi (4.8 bar) retracts the needle
➀➀
from the needle seat
➁➁
, permitting fluid flow from the output
tip adapter
➂➂
. Piston and needle stroke and fluid flow are
controlled by the stroke control knob. Once the cycle is
complete, air is exhausted back through the valve controller,
ensuring rapid and positive fluid shutoff.
The 741V Series can be operated in any position without
affecting flow. 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.
To calibrate or document the dispensing process, use the
stroke control reference. To calibrate, turn the calibrating
adjustment (located in the end of the stroke adjustment
knob) out two full turns. Close the stroke adjustment knob
fully until it bottoms against the air cylinder body. Turn the
adjustment until it stops, calibrating the valve to zero stroke.*
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 — near 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.
POWER
RUN
SETUP
CYCLE
STOP
Test Clear
Purge
Run
Setup Program
Fast Slow
Time Set
Steady
Pressure
Time
Fast Slow
Time Set
®
A NORDSON COMPANY
VALVEMATE
7000
Function Indicators
Emergency Stop
Control Pad
set time
timer bypass
display pressure (psi, bar)
TEACH program
test cycle
purge
reset
air input
power input
(voltage selector)
air output to valve
I/O connector with alarm
output (<60 psi)
connector for
optional foot pedal
Rear Panel
Pressure/Time Toggle
* The 741V valve can be ordered in a tamper-resist configuration
to limit unauthorized adjustment. Specify part #741V-TR. For
the stainless steel model, specify part #741V-SS-TR.
How the Valve Operates
The primary control of deposit size is the valve open time.
closed open
741 Series Fluid Flow
➀➀
➂➂
➁➁
➀➀
➂➂
➁➁
www.efd-inc.com [e-mail] USA 800-556-3484 Europe [phone] Asia [phone]

741V Series Specifications
741V
Weight: 158.8 grams (5.6 oz)
Fluid body: Hard-coated aluminum
Air cylinder body: Hard-coated aluminum
741V-SS
Weight: 317.5 grams (11.2 oz)
Fluid body: Type 303 stainless steel
Air cylinder body: Type 303 stainless steel
General
Size: 114.6 mm x 26.9 mm diameter (4.51" length x 1.06")
Piston: Type 303 stainless steel
Needle: Type 303 stainless steel
Free flow orifice: 1.17 mm (0.046")
Fluid inlet thread: 1/8 NPT female
Fluid outlet: Male luer lock
Tip adapter/needle seat: Type 303 stainless steel
SafetyLok collar: Nylon
Needle packings: Teflon®
Air pressure required: 70 to 90 psi (4.8 to 6.2 bar)
Maximum input fluid pressure: 300 psi (20.7 bar)
Maximum operating temperature: 43ºC (110ºF)
Mounting: (1) 1/4-28 UNF tapped hole
Operating frequency: Exceeds 400 cycles/minute
Note: All stainless steel valve parts are passivated.
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.
For EFD sales and service in over 30 countries,
contact EFD or go to www.efd-inc.com/contact
EFD, Inc.
East Providence, RI USA
800-556-3484; [phone] (outside the USA)
[email protected] www.efd-inc.com
EFD International Inc.
Dunstable, Bedfordshire, UK
0800 585733 or [phone]
Ireland 00800 8272 9444
[email protected] www.efd-inc.com
EFD, Inc., Asia
China: [phone]
[email protected] www.efd-inc.com/cn
Singapore: [phone] [email protected]
Teflon is a registered trademark of DuPont.
©2006 Nordson Corporation 741V-INSTALL-01 v062606
A NORDSON COMPANY