Test Power Supply Resistance; Test Barrel Resistance - Graco PRO Xs Instructions - Parts Manual

Electrical Tests

Test Power Supply Resistance

1. Remove the power supply (18), page 38.
2. Remove the turbine alternator (19) from the power
supply, page 39.
3. Measure resistance from the power supply's ground
strips (EE) to the conductive contact in the center of
the power supply seal (FF). See F
4. The resistance should be 55-70 megohms. If out-
side this range, replace the power supply. If in
range, proceed to the next test.
AA
FF
F . 19. Test Power Supply Resistance
IG
24

Test Barrel Resistance

1. Insert a conductive rod (GG) into the gun barrel
2. Measure the resistance between the conductive rod
. 19
IG
3. If the resistance is outside the range, replace barrel.
4. If resistance is in range, reassemble the gun and
5. If you still have problems, refer to Gun Repair on
EE
ti1599a
F
IG
(removed for the power supply test) and against the
metal contact (HH) in the front of the barrel.
(GG) and the charging probe socket (CC). See F
20 The resistance should be 15-30 megohms.
test the gun resistance.
page 28 for other possible causes of poor perfor-
mance, or contact your Graco distributor.
GG
CC
. 20. Test Barrel Resistance
IG
AA
HH
ti12821
313227E
.