Troubleshooting; Troubleshooting Table B - Nordson 3100V Series Customer Product Manual

Hydraulics
B 1-3
3.
Troubleshooting
The following
troubleshooting table describes the kinds of hydraulic
system problems you may encounter and provides corrective actions for
handling those
problems. When necessary
the
table refers you to the
Troubleshooting Procedures part
of
this section, which
contains more
detailed procedures for diagnosing hydraulic system problems.
Refer to the following table to troubleshoot hydraulic system problems.
Table B 1-lTroubleshooting Hydraulic System Problems
Troubleshooting
Table
Problem Possible Cause Corrective Action
3.
Pump
stroking erratically
(i
nconsistent adhesive
output)
(See Note A)
Adhesive
leveltoo
low
Adhesive temperature too low
Pump
siphon ball seat dirty or
missing
Pump hydraulic section dirty
Check
the adhesive
level.
Add adhesive
if necessary. Refer
to Checking the
Adhesive Leveland Filling the Tankin
Operation.
Check the
temperature settings. Refer
to
System
Programming Procedures
in
lnstallation.
Check
the siphon ball
seat.
Refer to
Pump Siphon
Ball Seat Check.
Clean
the pump hydraulic section.
Refer
to
Cleaning
or
Rebuilding
the
Pump.
4.
Pump
stroking too fast
(little or no adhesive
output)
Adhesive leveltoo
low
Pressure relief valve defective
Check the adhesive
level.
Add adhesive
if
necessary. Refer to Checking
the
Adhesive Leveland Filling the Tankin
Operation.
Replace
the pressure relief valve.
Refer
to Replacing
the
Pressure Relief
Valve.
5. Pump not stroking (no
adhesive output)
Pump not
turned
on
No input
air pressure to the pump
Wait for
the READY light to turn on.
NOTE:
For some standard Vista and
Vista PC units, you may need to turn
the pump on manually after the READY
light
turns
on.
lf
the auto-energize
pump feature
is
enabled, the pump will
turn on automatically.
Check the input air
pressure. Adjust
if
necessary.
NOTE A: The pump should
make
two regularly spaced exhaust sounds.
lf
you hear two exhaust sounds followed
by a pause, the pump is stroking erratically (the hydraulic shaft is moving faster in one direction than the
other).
Continued
on next
page
@O00 Nordson Corporatlon
All rights reserved
41-3000y
lssued 5/00
81
EN-02-[3V-X-AGXXI-2