LOSS
OF
AUXILIARY
POWER
1.
Start the check-out procedure by pressing the
reset button(s) on the circuit breaker(s). If the
button appears to reset, start the engine to
determine whether auxiliary power is now
available. If circuit breaker again opens, the
circuit is either overloaded. or a short circuit is
causing the breaker to trip.
.
Measure the load
being drawn. Total load should not exceed 5KW.
Check appliance,
tool,
or cord plugs for shorts.
2.
If no evidence of fault is found with the circuit
breaker, proceed with applicable steps
1
through
9 preceding.
CONTROL
BOX
The rear side of the control panel contains the
switching members and connections to the reactor
transformer. Also, a small panel on the lower part of
the control panel mounts a diode and resistor that
provide a DC pulse for generator excitation buildup.
If troubleshooting an inoperative generator indicates
replacement of the diode and/or resistor is necessary,
certain precautions should be taken to avoid heat
damage to the new diode. After unsoldering the lower
lead of the diode to be removed, clean any excess
solder off the terminal board post. Make a loop in the
diode lead and fit to the solder
terminal.
Allow enough
room between the solder joint and the diode body to
allow a small nose pliers to grasp the
lead.
The pliers
will act as a heat sink to absorb the heat applied bythe
soldering
iron.
Make the solder joint quickly to avoid
overheating the solder joint. Secure opposite lead to
the threaded stud along with the resistor
lead.
When
replacing the resistor, the use of reasonable care in
soldering will suffice.
If, through accident or misuse, the selector switch
becomes damaged or burned, and replacement is
necessary, thefollowing procedure should befollow-
ed for switch replacement.
1.
Disconnect and tag all leads from the control box
to the generator.
2.
Remove all bolts and screws that attach the
control box to the generator frame and lift the
assembly off the generator.
3. Use a small pin punch to drive the roll pin from the
selector handle and pull the handle off the shaft.
4.
With the aid of a snap-ring pliers remove the snap
ring from the selector shaft.
5. Remove the receptacle and circuit breaker moun-
ting screws from panel front. Unscrew the nuts
and washers from the terminal studs on the,front
of the terminal studs on the front of the control
panel.
Remove the
1/4-20
machine bolt from the
top-center of the control panel and pull the panel
off.
6. The wiper blade, tension spring and operating
shaft may now be slid out of the switch assembly
as a unit. This will release the copper connector
bar and terminal stud which should also be
removed.
7. The squeeze type connectors that secure reactor
leads xl through x7to theselectorterminalsmust
be removed with a hack-saw, bolt cutters orother
suitable means. If it is determined that this is
impossible, the stranded leads may be severed
next to the connector. This method is not
recommended unless absolutely necessary
because shortening the lead will make handling
more difficult.
8. Clean the leads with sandpaper and tape any
frayed or broken insulation or slide a new glass
fiber sleeve over the lead if the insulation is
beyond repair. Replace the identifying marker
(xl,
x2, etc.) on the sleeve.
9. The leads are reassembled to the new selector
panel with screw type connectors. See Parts List.
Before reassembly, tin or flex any bare copper
wires.
Insert wire and terminal pin and tighten
securely. Flow solder into the connector and
wires with either a low flame torch or large
soldering copper. This will assure agood, perma-
nent electrical bond.
10.
Replace any other parts as necessary and
reassemble the new switch in the reverse orderof
disassembly. When replacing the switch handle,
do not overlook replacing the spacer washer
under the snap
ring.
38 .
To Next Page
Loading...
Need help?
General
