Graco ULTRA AIRLESS 230-963 User Manual
Page 17
BRIDGE TEST
Remove the bridge from the pressure control box and
perform this test to determine if the bridge is functional.
continuity tester, such as multi-meter set on the X1
See Bridge Rectifier Replacement, page
Use a
ohms scale
n
the bridge fails even one test,
it
must be replaced.
Eight individual checks, or tests, must be performed.
If
11 shows the position of the wires on the bridge.
Us-
ing the chart
at
the right, connect the meter wires as in-
dicated by the black dots for each test, then check the
continuity.
In Tests 1,
2
and
3,
there should be
NO
continuity.
indicated, check continuity,
the meter wire
In Tests
4,
5
and
6,
connect the and meter wires as
get
NO continuity one way, and
YES continuity the
connections and check continuity again.
You should
other way.
In Tests 7 and connect the meter wires as indicated
by
the black dots. Touch the indicated
wire to one
meter wire, and then the other.
You should get
NO
con-
tinuity one way, and
YES continuity the other way.
BRIDGE WIRES
Fig
11
16