AEC VacTrac Series Conveying Systems - Manual (Page 107)

VacTrac™ Series Conveying Systems Page 107
Mechanical Components WH2-605A.4
Problem Possible cause Solution
Dump Delay time set to zero, or
insufficient dump delay time.
Set dump delay time to the time
it takes the largest vacuum
hopper in the system to dump.
Dusty material. Consult sales representative.
Filter chamber filter cartridge is
becoming obstructed too
frequently by fines and dust.
Dusty material — Optional
compressed air filter cleaning
may be needed on filter
chamber.
Consult sales representative.
No material demand at receivers
if none of the amber lights on
the optional light board are lit.
Normal operation. Pump
packages shut off thirty (30)
seconds after no demand is
detected for the time
programmed.
Pumps and receivers are on-
line, but the pumps are not
conveying material.
The on-line receivers are not
assigned to the pumps that are
on-line. Reconfigure the control panel,
assigning the pumps to the
desired hopper.
Optional audible/visual alarm
installed on a Volume Fill
system continues to signal after
the Press-To-Silence button is
pressed.
The alarm is triggered every
time an alarm message
displays.
In cases where numerous alarm
conditions occur, alarm
messages build up in the display
buffer. Each time one is
released from the buffer, the
alarm sounds.
The operator may:
• Press the silence button
after each message
• Disable the alarm using
the control panel keypad
• Cancel No-Convey
alarm(s) c.
Correct the problem causing the
alarm. Alarm will not trigger
again until another high vacuum
condition occurs. If multiple
alarm messages are in the
buffer, the button may need to
be pressed a few times.
The alarm package is wired
incorrectly. Correct wiring. Consult wiring
diagram.
Optional audible alarm is not
functioning.
Alarm package component
failure. Troubleshoot and repair/replace
problem.
c To cancel No Convey alarm(s):
• Take the problem receiver(s) off line with field-installed station bypass switches.
• Take the problem receiver(s) off line with the control panel.
• Remove the material demand by filling the bin below the vacuum receiver.