27
307–785
BRIDGE
RECTIFIER
REPLACEMENT
Before doing this procedure, follow the Pressure
Relief Procedure Warning on page 24 to reduce
the risk of a fluid injection injury , splashing in the
eyes or on the skin, injury from moving parts, or
electric shock.
Unplug the sprayer!
WARNING
NOTE:
The
most common cause of bridge failure is
a
faulty motor
.
Check the motor before replac
-
ing the bridge to prevent damaging the new
bridge.
1.
Remove the pressure control cover
.
2.
Disconnect
all wires from the
bridge (308) at the ap
-
propriate
terminals, using needle nose pliers.
3.
Outside the pressure control box are two screws
(331).
Loosen,
but don’t remove the screw nearest
the
motor
. Then loosen and remove the front screw
.
Slide
the bridge out.
4.
Slide
the slotted end of the new bridge (308) into the
box so the lockwasher (333) on the rear screw (331)
is
IN FRONT of
the bridge. Refer to the DET
AIL be
-
low.
5.
Install the front screw (331), lockwasher (333) and
nut
(332). Make sure the bridge is flush with the side
of
the box and tighten the screws securely
.
CAUTION
The
lockwashers (333) must be
in front of the bridge
to avoid overheating which will result in bridge
failure.
Refer to the DET
AIL in Fig 27–1.
6.
Connect all wires. Carefully route the wires.
Be sure the flat blade of the insulated male
connector is centered in the wrap–around blade of
the female connector when the connections are
made.
Improper connections may cause the sprayer
to
malfunction.
Route all wires carefully to avoid interference with
the
movement of the
bourdon tube, circuit board, or
control
box cover which could cause a malfunction.
CAUTION
7.
Reinstall the pressure control cover
.
332
333
308
331
BRIDGE INST
ALLA
TION DET
AIL
Fig 27–1
303
310
309
308
306
SLOTTED
END
LOOSEN AND
REMOVE
LOOSEN THIS SCREW
BUT DO NOT REMOVE
CIRCUIT BREAKER REPLACEMENT
Before doing this procedure, follow the Pressure
Relief Procedure Warning on page 24 to reduce
the risk of a fluid injection injury , splashing in the
eyes or on the skin, injury from moving parts, or
electric shock.
Unplug the sprayer!
WARNING
Refer to Fig 27–1.
1.
Remove the pressure control cover
.
2. Use
a small screwdriver to slide the terminal adapter
off
the circuit breaker terminal.
3. Disconnect the single black wire (306) from the cir-
cuit
breaker (309) to the ON/OFF switch (303).
4. Use a 5/8 in. socket wrench to loosen the nut and
boot
(310) on the circuit breaker button.
5. Push
down on the top of the circuit breaker and pull
it
out of the box.
6.
Install the new circuit breaker in the reverse order
.
7.
Reinstall the pressure control cover
.
Do
not alow the circuit breaker contacts to touch the
bourdon tube, which will cause a short. T
ighten the
circuit breaker nut firmly to prevent the circuit
breaker
from turning.
CAUTION
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