USA Lab USA-UC-30L, Manual

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9. Troubleshooting
Symptoms Troubleshooting method
Failure of Ultrasonic wave
① Check whether the power cable has been connected
properly (by inspecting operation of power indicator lamp).
② Check whether PCB has been connected properly to the
power socket.
③ Check whether the fuse tube is broken.
Weak ultrasonic wave
① Check whether the power voltage is normal.
② Inspect whether the energy converter get loose or there
is any shock absorption material or work piece under the
tank.
③ Check whether cleaning fluid temperature is normal
(recommended operating temperature is higher than 30
degree) or there are many air bubbles in the fluid or on the
tank wall (repeated power-on/off will reduce the bubbles).
④ Check whether the solvent is added excessively.
No heating
① Check whether target temperature is too lower (lower than
current actual temperature).
② Check whether the heater cable is disconnected or gets
loose.
③ Check whether heater is broken (due to shortage of
cleaning fluid).
Electric leakage
① Check whether the machine has absorbed damp or
corroded.
② Check whether cable tray to each component is damaged,
loosened or broken.
③ Check whether the earth wire is in good condition.