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Conveying System Mechanical Components Chapter 6: Troubleshooting 97 of 138
Problem Possible Cause Possible Remedy
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. Optional
cyclone separator or low-
head separator may be
needed – Consult sales rep.
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.
(Refer to enclosed Control
Panel Manual for specific
instructions.)
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
continues to signal after the
Press-To-Silence button is
pressed.
(Refer to enclosed Control
Panel Manual for specific
instructions.)
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) •.
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.
• 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.