UNITED CPC4000, Operation And Maintenance Manual

Page: 19 / 39

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Desired RPM Not Reached
Possible Problem Item to Check Remarks
Machine overloaded If the acceleration of the machine
slows before the desired RPM is
reached, the machine is attempting
to avoid an overload condition. Loading the barrels with more
material will not overload the
machine. With the CPC, the
greatest
load condition occurs at
approximately 60% fill height.
Try running your process with more
parts and media to eliminate this
condition.
Exceeds Maximum RPM If in Manual or Auto Mode Screens
the “EXCEEDS MAXIMUM RPM” is
displayed, check the Maximum RPM
setting in the System Tools screen. Maximum RPM and Cycle Time limits
are set to protect the system from
operator error. These settings can be
password proteced.
Barrels Leak
Possible Problem Item to Check Remarks
Contamination on the
sealing surface of the barrel
and lid Remove the lid and check for media,
compound or other obstructions on
the sealing surfaces Review the section “Closing &
Loading Barrels” for procedures to
eliminate this problem.
Process too hot Verify that the process is not
building up significant heat and
pressure that is causing the seal to
fail. Refer to the section “Opening the
Barrels” for information and tips
about building up pressure in the
barrels.
Worn barrel tabs Inspect the barrel tabs on each end
of each Lock bar and adjust as
necessary. Refer to the section “Lockbar” for
detailed instructions.
Worn linings Inspect the barrel linings Refer to the section “Inspecting
Barrel Lining” instructions.
Turret Slips During Loading
Possible Problem Item to Check Remarks
Loose or broken main drive
belt. Attempt to rotate the turret by hand,
if it rotates, then the belt needs
servicing. Refer to the “Main Drive Belt”
section for tensioning and
replacement instructions.
“Glazed” main brake rotor Run the machine at 120-180 rpm
empty and then remove power from
the machine. This will grind a thin
layer off the rotor allowing the brake
to re-seat. Due to the requirements of the
machine, this “glazing” may become
a common occurrence. In which case
add this procedure to your
preventative maintenance schedule.