Filter
Top Products
Installation, Operation, and Maintenance Manual # 509252 Rev R 107
Test Point Voltages
Control Card Removal/Replacement
This unit must be disconnected and returned to Fusion UV Systems for repair or direct
replacement. The control card cannot be repaired in the field.
1. Remove the six screws from the power supply cover. Remove the cover.
2. Remove all connectors. Remove three screws at the top of the card. Slide the
card approximately an inch away from the front panel and raise it up out of its
bottom track.
3. To install a replacement card, reverse this procedure. Note the location of
connectors in Figure 44 on page 109 and reinstall as shown.
WARNING: Before taking magnetron current
readings, turn the unit off. Check resistance
between “MAG CURRENT” test points.
Reading should be approximately 40K Ohms.
If this value is not correct, do not attempt
current reading. Damage could result to the
meter or personnel injury could result. Contact
Fusion UV Systems Customer Service if 40K
Ohms reading is not obtained.
After checking resistance, be sure to switch
the meter to correct setting for DC voltage
reading.
Table 19. Operating Voltages
Test Points Application
Status
Standby Lamp On
Photoresistor Test (TP101 and TP102) P300M/ P300MQ 12 VDC 0-6 VDC
Magnetron Current Test MAG A - COM
(TP105 and TP106)
P300M/P300MQ 0 0.650-0.750 VDC