SERVICE MANUAL - Alarko Carrier
SERVICE MANUAL - Alarko Carrier
SERVICE MANUAL - Alarko Carrier
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
11-8-5. Checking Method for Each Part<br />
No.<br />
1<br />
Part name<br />
Electrolytic capacitor<br />
(For raising pressure,<br />
smoothing)<br />
Checking procedure<br />
1. Turn OFF the power supply breaker.<br />
2. Discharge all three capacitors completely.<br />
3. Check that safety valve at the bottom of capacitor is not broken.<br />
4. Check that vessel is not swollen or exploded.<br />
5. Check that electrolytic liquid does not blow off.<br />
6. Check that the normal charging characteristics are shown in continuity test by<br />
the tester.<br />
Heat sink IGBT side<br />
C10 C11 C12 C13<br />
MCC-1438<br />
Soldered<br />
surface<br />
Case that product is good<br />
Pointer swings once, and returns<br />
slowly. When performing test<br />
once again under another<br />
polarity, the pointer should return.<br />
C12, C13, C14, C15 → 500µF/400V<br />
2 IGBT module 1. Turn OFF the power supply switch.<br />
2. Discharge all four electrolytic capacitors completely.<br />
3. Execute continuity test with a tester.<br />
+ – BZ BY BX W BW V BV U BU +<br />
BU<br />
U<br />
BV<br />
V<br />
BW<br />
W<br />
BX<br />
–<br />
Tester rod<br />
BY<br />
+<br />
–<br />
Case that product is good<br />
BZ<br />
+<br />
U V W U V W<br />
U V W<br />
W U V<br />
–<br />
1M or more 100k to 300k 200k to 300k<br />
–<br />
+<br />
– 105 –
Change language