50
IPM Continuity Check
Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure
the resistance between P and UVWN; UVW and N.
Table 25—Digital Tester
DIGITAL TESTER
NORMAL RESISTANCE
VALUE
DIGITAL TESTER
NORMAL RESISTANCE
VALUE
(+)Red
(-)Black
∞
(Several M
Ω
)
(+)Red
(-)Black
∞
(Several M
Ω
)
P
N
U
N
U
V
V
W
W
(+)Red
Pressure on Service Port
Heating Charts
Table 26—Heating Chart
°
F
(
°
C
)
ODT/IDT
57/53
(13.89/11.67)
47/43
(8.33/6.11)
37/33
(2.78/0.56)
27/33
(-2.78/-5)
17/13
(-8.33/-10.56)
BAR
55
30.3
28.5
25.3
22.8
20.8
BAR
65
32.5
30.0
26.6
25.4
23.3
BAR
75
33.8
31.5
27.8
26.3
24.9
Table 27—Heating Chart
°
F
(
°
C
)
ODT/IDT
57/53
(13.89/11.67)
47/43
(8.33/6.11)
37/33
(2.78/0.56)
27/33
(-2.78/-5)
17/13
(-8.33/-10.56)
PSI
55
439
413
367
330
302
PSI
65
471
435
386
368
339
PSI
75
489
457
403
381
362
Table 28—Heating Chart
°
F
(
°
C
)
ODT/IDT
57/53
(13.89/11.67)
47/43
(8.33/6.11)
37/33
(2.78/0.56)
27/33
(-2.78/-5)
17/13
(-8.33/-10.56)
MPA
55
3.03
2.85
2.53
2.28
2.08
MPA
65
3.25
3.00
2.66
2.54
2.33
MPA
75
3.38
3.15
2.78
2.63
2.49
Fig. 43 – Heating Chart
