S ECTION 5
MAI NT E NANCE
A . GENERAL
This section contains information on maintenance of the Oltronix power
supplies , type RAC PAC 150, 300, 600 a.nd 1000 .
These power supplies are fully equipped with s emiconductors and under
normal operating conditions require little or no maintenance throughout
their lives .
Do not troubleshoot these instruments without carefully studying the trouble
shooting information given in this manual.
Changing and adjustm ent setting accidently might involve considerable
alignment time o Switch off the instrument when replacing any component.
B. FRONT PANE L CH ECK
The table below des cribes a function check which
can
be performed with the
instrument in its cabinet without additional equipment. Thes e t ests will
establish that the instrum ent is probably operating normally.
A performance test is described in s ection 5Db .
--�---�>------·-
F i g u r e
3 4
1 . Turn "Voltage control" ( 1 1) fully C C W and " Current limit''
(8)
fully CW ..
Switch "Sense" (16) in position "INT" . OV P
( 7)
is off.
2. Switch on the power supply (14) . Pilot lamp (1) is lit.
3 . Increase the output voltage slowly, checking that the voltm eter (3)
tracks the voltage approximately . Also check that the voltmeter changes
range (5) near FS of lower voltmeter range.
4. Decreas e the voltage control to· zero .
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