Nordson-EFD-794-Operating-Manual.pdf - 第14页
For Nordson EFD sales and service in over 40 countries, contact Nordson EFD or go to www.nordsonefd.com. Global 800-556-3484; +1-401-431-7000 info@nordsonefd.com Europe 00800 7001 7001 infoefd.europe@nordsonefd.com Asia …
794 Series Auger Valve | Operating Manual
12 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
Troubleshooting (continued)
Problem Possible Cause Solution
Inconsistent
deposits
Poor material cut-off Reverse motor briefly at end of deposit routine
Switch to chamfered tip
Tip too large Change to smaller (larger number) tip
Gap too small Increase gap
Inconsistent material Replace and / or mix material
Air in material Run one or more purge routines until cleared
De-air material (vacuum or centrifuge)
Premature retraction Increase dwell time
Process temperature changing Install temperature control system, such as the EFD
ProcessMate
®
6500 temperature controller
Damaged tip Replace tip
Leaking at fittings Fittings loose Tighten fittings
Hose loose on fittings Replace hose
Fitting(s) cracked Replace barbed fitting(s) (Recommended: P/N 7014845)
Material incompatibility Switch to optional metal fittings (P/N 7021724)
Leaking at auger Worn or damaged auger seal Replace auger seal
Material being
damaged
Bent auger Replace auger
Worn auger bearing Replace auger bearing
Residual material
at material change-
over
Dead spots in material path at
barbs
Switch to optional metal fittings (P/N 7021724)
794 Series Auger Valve | Operating Manual
13www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
Notes
For Nordson EFD sales and service in over
40 countries, contact Nordson EFD or go to
www.nordsonefd.com.
Global
800-556-3484; +1-401-431-7000
info@nordsonefd.com
Europe
00800 7001 7001
infoefd.europe@nordsonefd.com
Asia
China: +86 (21) 3866 9006; china@nordsonefd.com
India: +91 80 4021 3600; india@nordsonefd.com
Japan: +81 03 5762 2760; japan@nordsonefd.com
Korea: +82-31-736-8321; korea@nordsonefd.com
SEAsia: +65 6796 9522; sin-mal@nordsonefd.com
The Wave Design is a trademark of Nordson Corporation.
©2023 Nordson Corporation 7026844 v121923
NORDSON EFD ONE YEAR LIMITED WARRANTY
This NordsonEFD product is warranted for one year from the date of purchase to be free
from defects in material and workmanship (but not against damage caused by misuse,
abrasion, corrosion, negligence, accident, faulty installation, or by dispensing material
incompatible with equipment) when the equipment is installed and operated in accordance
with factory recommendations and instructions.
NordsonEFD will repair or replace free of charge any defective part upon authorized return
of the part prepaid to our factory during the warranty period. The only exceptions are those
parts which normally wear and must be replaced routinely, such as, but not limited to, valve
diaphragms, seals, valve heads, needles, and nozzles.
In no event shall any liability or obligation of NordsonEFD arising from this warranty exceed
the purchase price of the equipment.
Before operation, the user shall determine the suitability of this product for its intended use,
and the user assumes all risk and liability whatsoever in connection therewith. NordsonEFD
makes no warranty of merchantability or fitness for a particular purpose. In no event shall
NordsonEFD be liable for incidental or consequential damages.
This warranty is valid only when oil-free, clean, dry, filtered air is used, where applicable.