Branson S83 - Trouble-Shooting the Load

S83/85 Ultrasonic Generator Troubleshooting
A40-064 Rev 0 Page 77
Faulty connection between ultrasonic
power supply and load.
Faulty component connected to
ultrasonic power supply.
Low line voltage.
RF cable not connected to ultrasonic
power supply.
Check RF cable and all connecting cables
for open or short circuits.
Refer to troubleshooting the load in this
section.
Check that the line voltage is above
190VAC.
Connect RF cable to ultrasonic power
supply.
6.3 Trouble-shooting the Load
Troubleshooting the load involves inspecting and testing ultrasonic equipment connected to the
ultrasonic power supply. Instructions follow for testing RF connections and transducers connected
to the ultrasonic power supply.
Warning: Transducer (elements) can hold a high voltage charge. Before
troubleshooting or making repairs, discharge voltage by momentarily
shorting pins A and B of the RF connector that plugs into the ultrasonic
power supply.
Note: Take capacitance measurements at room temperature.
Step Action
1 Turn off AC voltage to ultrasonic power supply.
2 Disconnect RF cable to tank or immersible transducer.
3 Inspect tank and immersible transducers for cracks, discolorations,
or charred spots.
4 Short pin A (red) and pin B (black) of the RF cable connector to
remove any electrical charge.
5 Connect an ohmmeter – set to resistance scale R x 10K – to pins A
and B of the RF connector. If the meter indicates a short circuit,
follow the steps below.
6 Troubleshoot as follows:
1. For ultrasonic tanks: (a) drain tank; (b) remove bottom
cover; and (c) inspect transducers and RF cable for a short
circuit.
2. For immersible transducers: check fittings and junction
boxes for a short circuit.
3. If you cannot find a short circuit, test transducers as
follows:
7 Do a DC Hi Pot test:
1. Connect DC Hi Pot positive red lead to pin; connect black
negative lead to pin B.
2. Apply 2500 VDC to the load. If the test indicates leakage