Symptom
Cause
Solution
Pump will not start.
Power cord not plugged in or
plugged into a bad outlet.
Motor in thermal overload.
Check power cord, try a
different outlet.
Allow motor to cool down.
Open case and check wire
connections.
Open 1/4” inlet cap and start
pump. Close cap tightly for
evacuation.
Poor vacuum.
Oil murky or dark in color.
Loose hose connection.
Oil contaminated.
Low oil level.
Miscalibrated gauge
Oil contaminated.
Check all hose connections and
flare caps for any leaks.
Replace with new oil.
Replace with new oil.
Recalibrate gauge, or try a
different gauge.
Replace with new oil.
Loose wire in machine.
Electrical Diagram
Troubleshooting Guide
Appion TEZ8 Wiring
10
Pump is designed to “soft start”
