25
BRIDGE RECTIFIER REPLACEMENT
Before doing this procedure, follow the
Pressure
Relief Procedure Warning
on page 22 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 replacing
the bridge to prevent damage to 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 DETAIL below.
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 DETAIL in Fig 25–1.
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 INSTALLATION DETAIL
Fig 25–1
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 22 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 25–1.
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 circuit
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. Tighten the
circuit breaker nut firmly to prevent the circuit
breaker from turning.
CAUTION
