Graco 230-963 Paint Sprayer User Manual


 
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
20.
Use
a
ohms scale
(
n
).
the bridge fails even one test,
it
must be replaced.
Eight individual checks, or tests, must be performed.
If
Fig
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,
then.switch 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
8.
connect the meter wires
as
indicated
by
the black dots. Touch the indicated
"G"
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
307-671