Fusion F300S - Manual (Page 110)

110 F300S/F300SQ Ultraviolet Lamp System
Capacitor Test
CAUTION: An ohmmeter can be used to check for a shorted or open
capacitor. (Isolate the component before performing continuity tests.)
The ohmmeter should have a minimum 6V battery, and should be set on the high
resistance scale.
1. Remove all power, discharge the capacitor, and disconnect all leads from the
capacitor terminals.
2. With an ohmmeter set on the highest scale, measure the resistance between the
two outside capacitor terminals and the center terminal. The meter needle should
momentarily deflect upward to indicate continuity, and should then return to
infinity. Reversing the meter leads should give the same indication.
3. If the ohmmeter indicates continuity between the capacitor terminals at all times
(shorted capacitor), or if no meter deflection occurs at all (open capacitor), the
capacitor should be replaced.
4. A resistance check between each capacitor terminal and chassis ground should
indicate infinite resistance (regardless of meter lead polarity).
High Voltage Transformer Removal/Replacement
CAUTION: To maintain proper polarity, transformers must be installed
with terminals in correct locations. Wiring must be reconnected correctly
to the terminals from which it was removed.
WARNING: Disconnect all power sources before
servicing high voltage components.
WARNING: Disconnect all power sources before
servicing high voltage components.