efd 790 Guida Utente

Troubleshooting Guide

No fluid flow

•

Dispensing tip may be clogged.
Replace dispensing tip.

•

Reservoir pressure may be too low.
Check pressure setting.

•

Material feed fitting may be clogged.
Clean or replace.

•

Motor inoperative. Check cable con-
nections and reset motor by turning
power switch off then on.

•

Motor wires may be on wrong terminals.
Check to be sure white wire is on I/O
Pin 7 and brown wire is on Pin 8.

Fluid does not shut off

•

Reservoir pressure is too high. Check

pressure setting.

•

Air is trapped in the fluid path. Remove
dispensing tip and purge the valve of
all air.

Fluid leaks into motor housing

•

Replace "U" cup seal.

Inconsistent deposits

•

Reservoir pressure may not be set

correctly. Check pressure setting.

•

Check for air in the fluid.

•

Fluid path may be partially obstructed.
Service fluid body.

This equipment is regulated by the European Union under WEEE
Directive (2002/96/EC). See www.efd-inc.com for information about
how to properly dispose of this equipment.

A NORDSON COMPANY

USA: 800-556-3484 or +1-401-434-1680
Europe: 0800 585733 or +44 (0) 1582 666334
Asia: +86 (21) 5854 2345
technical@efd-inc.com