Table of Contents
Advertisement
Troubleshooting
Troubleshooting
If operating difficulties are encountered, review the
symptoms below. With each problem there are one or
more possible causes that should be investigated to
resolve the situation.
Nothing Happens
If absolutely nothing happens when trying to cycle the
Dispense Head, check the pneumatic power. Check the
footswitch or cycle start switch to be sure it is plugged
in.
Valve Cycles, Nothing
Dispensed
First, try to purge the unit; this should fix most situations.
If it doesn't, check to see that there is enough pressure
to the reservoir or transfer pump. Perhaps the Reser-
voir/Needle path is clogged; examine and clear or
replace as necessary. Consider whether the material
could have set up in the system. (See the Wet System
Checkout and Operation Adjustments sections.)
Irregular Volume Dispensed
Frequently, this is caused by faulty material. The mate-
rial must be a smooth (homogeneous) mixture, without
any air entrapped in it. A second cause could possibly
be that the material is not being supplied. Check the res-
ervoir pressure as it may be too low for the type of mate-
rial being dispensed and/or the rate at which the system
moves the dispense valve may be too fast. To adjust,
follow the directions found in the Operation Adjust-
ments section of this manual.
Reduced Volumes Dispensed
Check to see if needle is partially clogged (refer to Peri-
odic Maintenance section).
No Material Dispensed
This is due to a clogged needle (refer to Periodic Main-
tenance section).
16
Material Continues to Flow After
Shut Off
This can be due to material preventing the piston from
seating properly into the needle seat or to a worn piston
and/or needle seat. Remove needle block and needle
seat, clear the blockage or replace the worn compo-
nents.
332094C
Advertisement
Table of Contents
