PVA PVA2000 - Page 50

Operation and Maintenance Manual Rev M(ii) 4/03
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Operation Other Symptoms Possible Cause Corrective Action
Axis runs away. Motor power connections
are wired incorrectly.
• Check the phasing using the
electrical drawings.
Z axis encoder
does not work.
Z axis encoder/brake cable
is loose or not connected.
• Check the cable
connections. Correct any
loose connections.
The axis amplifier is bad.
• Replace the amplifier.
Pneumatic actuator
failure.
Pneumatics work
slowly.
Air lockout valve on the rear
of the machine is in the OFF
position.
• Turn the lockout valve to
the ON position.
Insufficient air pressure.
• Check and adjust the system
pressures to the correct
values. Please refer to the
Machine Specific
Information section of the
Operating Guide for
particular pressure settings.
Restricted air line.
• Correct any tight bends or
restrictions in the air lines.
Loose Fitting or Tubing
Connection.
• Tighten connection.
Frayed or damaged air line.
• Replace the damaged air
line(s).
Sensor is not positioned
correctly.
• Adjust the sensor location.
Part in place sensor
failure.
Cable is loose or not
connected.
• Check the cable
connections. Correct any
loose connections.
Conveyor does not
run.
Conveyor belt stuck to rails.
• Clean or replace belt.
No power to
conveyor motor.
Control relay not energized
or Power On light not
illuminated (Certain
Models).
• Check voltages and
connections.
• Check conveyor power fuse.
Exhaust fan does
not run.
No air flow. The motor overload relay,
OL-1, is in the tripped state.
• Reset the exhaust fan
overload relay.
• Check FU-5 in the electrical
enclosure.
Insufficient air flow capacity
in the factory ducting.
• Upgrade the duct to allow
for more air flow.