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Test
Test
Test Power
Power
Power Supply
Supply
Supply Resistance
Resistance
Resistance
1.
Remove the power supply (11). See
Supply Removal and Replacement, page 45
.
2.
Remove the alternator (15)
from the power supply.
See
Alternator Removal and Replacement, page 46
3.
Measure resistance from the power supply's
ground strips (EE) to the spring (11a). The
resistance should be:
• 86–110 megohms for 60 kV guns
• 130–160 megohms for 85 kV guns
4.
If outside this range, replace the
power supply. If in range, go to
Test Gun Barrel Resistance, page 34
.
5.
If you still have problems, refer to
,,, for
other possible causes of poor performance, or
contact your Graco distributor.
6.
Be sure the spring (11a) is in place before
reinstalling the power supply.
Figure 18 Test Power Supply Resistance
3A2495K
33