Bridge Replacement - Graco Ultra 1000 Instructions-Parts List Manual

Bridge/Rectifier
i
WARNING
Before doing this procedure, follow the Pressure
Relief Procedure Warning on page 21 to reduce
Refer to Fig. 18.
I. Remove the pressure control cover and screws.
2. Disconnect all wires from the bridge (308) at the
appropriate 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 mounting plate (89).
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)
I s
IN
FRONT of the bridge.
5. Install the front screw (=I), lockwasher (333) and
nut (332).
CAUTION
The lockwashers
(333)
must be.in front
o f
the
bridge to avoid overheating which will result in
bridge failure. Refer to the Detail in Fig. 18.
6.
Make sure the bridge is flush with the side
o f
the
box and tighten the screws securely.
7. Connect all wires. Carefully route the wires.
CAUTION
Be sure the flat blade
o f
the insulated male con-
the female connector when the connections are
nector is centered in the wrap-around blade
o f
made. Improper connections may cause the
sprayer to malfunction. Route all wires carefully to
avoid interference with the movement
o f
the bour-
don tube, circuit board, or control box cover which
could cause a malfunction.
8. Reinstall the pressure control cover and screws.
Loosen
this screw but
do not remove
.
'308
I J
'
332
a
O l p e
Fig. 18
m m . .
" I
mm