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Troubleshooting
Troubleshooting Chart
Problem
Inconsistent material mix
Gauge and Display pressures are
extremely different
4-Way Fluid valve does not shift
at the end of a stroke
Material leaking from meter end
caps
62
Cause
Material inlet pressures are not set
correctly. Erratic feed pump
Cured material on mix elements
Metering Pump Piston worn or damaged Replace piston cups
B supply pressure is too high
Insufficient air supply
Bad Gauge or transducer
No Material inlet pressure
No air supply to 4-Way Fluid Valve
Bad Solenoid Valve (Electric units only)
Limit valve not working (Pneumatic
controls only)
LRT not mounted properly (electric
controls only)
LRT not working properly (electric
controls only)
Worn seals
End Caps loose
Solution
Refer table 1 and Shot
Meter troubleshooting
information
Verify machine is on ratio.
Remove mixer clean or
replace
Reduce B supply pressure
Verify consistent air supply
Determine which device is
bad and replace
Verify
Verify
Test solenoid with manual
overide near connetor
Rebuild or replace reference
Air valve replacement
section
Verify Linear Transducer on
Shot Meter is rigidly
mounted on machine frame.
Verify connection to main
control box.
Verify Shot meter moves on
Run Screen
Replace
Hand tighten with wrench
provided
312767B
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