Kikusui PAD-L III Series, Operation Manual

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PAD-L Maintenance 6-11
Warm-up
CAUTION
• Perform the warm-up with the cover in place. Applying power to
the unit for extended periods with the cover removed weakens the
cooling effect, potentially causing a failure.
5. Turn on the POWER switch.
6. Set the output current to the rated output current.
Warm up the unit, including the DVM, for an adequate period.
Removing the cover
7. Turn off the POWER switch, then turn off the switch for the switchboard.
8. Remove the cover. See 6.3.3 "Removing the cover".
Output current offset
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NOTE
• On shipment from the factory, the output current offset is set so that a slight
negative current (several tens mA) flows when the I.
OS
variable resistor is
turned to the extreme counterclockwise position, in order to ensure 0 A output.
If this current does not present problems, turn the I.
OS
variable resistor on the
front panel to the extreme counterclockwise position and proceed to the next
adjustment item.
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
9. Turn on the switch for the switchboard, then turn on the POWER switch.
10. Turn the CURRENT setting knob to the extreme counterclockwise
position.
11. Adjust the I.
OS
variable resistor on the front panel so that a current value
calculated from the DVM reading becomes 0 A.
Maximum variable range of constant current
12. Turn the CURRENT setting knob to the extreme clockwise position.
13. Adjust the RV49 variable resistor on the PCB A-200 so that a current
value calculated from the DVM reading becomes the maximum current
value shown in Table 6-2.
See Figs. 6-9, 6-10, and 6-11.
Full scale of the ammeter
14. Set the output current so that a current value calculated from the DVM
reading equals the rated output current of the unit.
15. Adjust the A.
FS
variable resistor on the front panel so that the indication
of the unit's ammeter equals a current value calculated from the DVM
reading.