Bridge Test - Graco ULTRA AIRLESS 230-963 Instructions And Parts List

BRIDGE TEST

Remove the bridge from the pressure control box and
perform this test to determine if the bridge is functional.
See Bridge Rectifier Replacement, page
continuity tester, such as multi-meter set on the X1
n
ohms scale
( ).
Eight individual checks, or tests, must be performed. If
the bridge fails even one test,
Fig 11 shows the position of the wires on the bridge. Us-
at
ing the chart the right, connect the meter wires as in-
dicated by the black dots for each test, then check the
continuity.
2 and 3, there should be NO continuity.
In Tests 1,
In Tests 4, 5 and 6, connect the
indicated, check continuity, then.switch the meter wire
connections and check continuity again. You should
get NO continuity one way, and YES continuity the
other way.
In Tests 7 and 8. connect the meter wires as indicated
by the black dots. Touch the indicated
meter wire, and then the other. You should get
tinuity one way, and YES continuity the other way.
Fig 11
16
307-671
20.
Use a
must be replaced.
it
+
-
and meter wires as
"G" wire to one
NO con-
BRIDGE WIRES