Graco 3A2495C Test Power Supply Resistance, Alternator Removal and Replacement

Test Power Supply Resistance

1.Remove the power supply (11). See Power 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 60kV guns

•130–160 megohms for 85kV 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 Electrical Troubleshooting on page 23 for other possible causes of poor performance, or contact your Graco distributor.

Electrical Tests

6.Be sure the spring (11a) is in place before reinstalling the power supply.

Figure 18 Test Power Supply Resistance

3A2495C 33