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Electrical Tests
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Test Power Supply
Resistance
1. Remove the power supply (18), page 33.
2. Remove the turbine alternator (19) from the power
supply, page 34.
3. Measure resistance from the power supply's ground
strips (EE) to the spring (18b). See Fig. 6.
4. The resistance should be 135-150 megohms. If out-
side this range, replace the power supply. If in
range, proceed to the next test.
5. If you still have problems, refer to “Electrical Trou-
bleshooting” on page 24 for other possible causes
of poor performance, or contact your Graco distrib-
utor.
6. Be sure the spring (18b) is in place before reinstall-
ing the power supply.
Fig
.
1
.
Fig. 6. Test Power Supply Resistance
ti1599a
EE
18b