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CLARKE TECHNOLOGY Model SPS-28 Space Sweeper Operator's Manual Page 15
Capacitor Test
If a commercial capacitor checker is not available, the
following test may be made:
1. Briefly short the capacitor terminals together with a
screwdriver.
2. Disconnect a wire from either capacitor terminal.
3. Adjust an ohmmeter to a high value such as RX10K or
RX1 Meg.
4. Connect the ohmmeter leads to the capacitor terminals.
5. A good capacitor will cause the indicator to move quickly
to zero ohms, then slowly return to infinite ohms. An
open capacitor will not cause any indicator movement; a
shorted capacitor will give a continuous zero ohms
reading.
6. If the test is to be repeated, the capacitor terminals must
again be shorted together briefly.
Diode Test
1. You must have a #308 ct. Everready continuity tester or
equivalent/
2. Desolder both wires from the diode lead connections.
(Clamp heatsink pliers on the diode leads to avoid
damaging the diodes.)
3. Attach one of the test unit leads to either diode lead.
4. Attach the other test unit lead to the diode heatsink.
5. Turn the test unit on and note if the test unit bulb lights.
DANGER: Reversing charge or polarity of wiring
could cause batteries to EXPLODE caus-
ing serious bodily harm to yourself or
others.
6.. Reverse the test unit leads in Steps 3 and 4.
7. Turn the test unit on and note if the test unit bulb lights.
8. Good diode - test light bulb should light up in one of
Steps 5 and 7 and not in the other.
Defective diode - test bulb will light up in both
Steps 5 and 7.
Defective Diode - Test bulb will not light up in either
Steps 5 or 7.
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