Graco ULTRA 1000 Instructions-Parts List Manual page 24

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BRIDGE RECTIFIER REPLACEMENT
(Refer to Fig 17)
Relief Procedure Warning on page 13 to reduce
the risk of a fluid injection injury, injury from mov-
ing parts or electric shock. Unplug the sprayerl
1. Remove the pressure control cover and screws.
2. Disconnect all wires from the bridge
(308)
a t the ap-
propriate terminals.
3. Outside the pressure control box on the right side are
two screws (331). Loosen, but don't remove the
screw near the back of the control box. Then loosen
and remove the front screw. Slide the bridge out.
4. Slide the new bridge (308) into the box being sure
the lockwasher (333) on the rear screw (331) is IN
FRONTof the bridge. Refer to the Detail in Fig 17.
5. Install the front screw, lockwasher and nut (332).
bridge
to
avoid overheating which will result in
bridge failure. Refer to the Detail in Fig 17.
6.
Make sure the bridge is flush with the side of the box
7. Connect all wires. Carefully route the wires.
and tighten the screws securely.
CAUTION
Be sure the flat blade of the insulated male con-
nector is centered in the wrap-around blade of the
female connector when the connections are
sprayer to malfunction.
made. Improper connections may cause the
Route all wires carefully to avoid interference with
the movement of the bourdon tube, circuit board,
tion.
or control box cover which could cause a malfunc-
8. Reinstall the pressure control cover and screws.
NOTE:
The most common cause of bridge failure is
a faultv motor. Check the motor before
replacing the bridge to prevent damaging
the new bridge.
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BRIDGE INSTALLATION DETAIL
!.
.
CIRCUIT BREAKER REPLACEMENT
(See Fig 17)
-1
disassembly.
WARNING
Before doing this procedure, follow the Pressure
Relief Procedure warning on page 13
to
reduce
it
out of the box.
the risk of a fluid injection injury, injury from mov-
ing parts, or electric shock. Unplug the sprayerl
5. Push down on the top of the circuit breaker end pull
6. Install the new circuit breaker in the reverse order of
7. Reinstall the pressure control cover and screws.
1. Remove the pressure control cover and screws.
CAUTION
2. Use a small screwdriver to
slide the terminal adapter
3. Disconnect the single black wire from the circuit
4.
Use
e 5 / 8 socket wrench to loosen the nut and boot
off the circuit breaker terminal. the bourdon tube, which will cause a short.
Tighten the circuit breaker nut firmly to prevent
breaker
1309)
to the ON/OFF switch (303).
(310) on the circuit breaker button.
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