Bypass Valve Malfunction
At above minimum
speed, measure dc
volts on Interface
board 151xx366 from
J5 pin 3 to J8 pin 2.
Bypass valve does
not recirculate glue
during machine stop
Run Machine
above minimum
speed without
product
no
yes
Is DMM
available for
measuring
voltages?
no
yes
Can bypass
valve be heard
clicking?
When machine changes from above
minimum speed to below minimum speed,
and vice versa, the bypass valve should be
heard clicking or vibration felt.
help
Control iand bypass valve are functioning
properly. Check air lines and glue source.
1. Check wiring at connector J8 on
151xx366 Interface board.
2. Check for correct wiring at bypass
valve.
3. Check for damaged cable connecting
dump valve to control.
Is this
measurement
approximately
0vdc?
At below minimum
speed, measure dc
volts on Interface
board 151xx366 from
J5 pin 3 to J8 pin 2.
Is this
measurement
approximately
12vdc?
Replace 151xx366 Interface board.
no
yes
no
yes
Control and bypass valve are functioning
properly. Check air lines and glue source.
B1
Summary of Contents for VC3500
Page 1: ...VC3500 User s Manual Software Version 3 X Manual Number MCO35 Manual Release Date July 1999 ...
Page 19: ...Installation VC3500 User s Manual Valco Cincinnati 16 Figure 8 Internal Connections Diagram ...
Page 88: ...VC3700 User s Manual Software Version 3 X Manual Number MCO34 Manual Release Date July 1999 ...
Page 181: ...VC3500 VC3700 Troubleshooting Manual Manual Number MC048 Release Date May 1999 ...
Page 185: ...VC3500 VC3700 Troubleshooting Manual Valco Cincinnati Page 1 System Level Documents ...