Onan 6GO-F User Manual

MAINTENANCE AND REPAIR
GENERATOR WINDINGS.- Use a continuity type test lamp set to test for
grounded or open circuits in the generator windings. Be sure that all
brushes are lifted away from contact with the commutator and collector
rings and that generator leads to the control panel are disconnected.
Whan disconnecting leads, tag them to facilitate correct replacement.
Disconnect condenser leads from brush tenninals to avoid mistaking a
defective condenser for a grounded lead.
Use an armature growler to test the armature for an internal short
circuit. Field coil windings may be tested for an internal short cir-
cuit by comparative ohmeter readings.
If one or more field coils test defective, install a new set of field
coils. If an armature winding tests defective, install a new armature
assembly. Leads may be repaired as necessary.
CONTROLS
CONTROL PANEL EQUIPMENT.- If any of the control panel equipment fails to
function properly, .the defective part should be replaced with a corre-
sponding new unit rather than to attempt repairs on the old part. Dis-
connect the battery whenever servicing any control panel equipment.
Keep all connections tight and clean.
If the plant will start but does not continue to run, start the plant
manually. If it continues to run with the ignition switch at the HAND
START position, trouble is indicated in one of the relays, the high
water temperature switch, or a loose connection. An open circuit be-
tween the generator and the stop relay will also prevent the plant
from running with the ignition switch at the ELECT. START position.
DO NOT LEAVE THE IGNlTlON SWITCH AT THE HAND START POSITION LONGER THAN
NECESSARY TO MAKE T~STS.
The plant is equipped with a start disconnect relay which serves to
open the start circuit when the plant is started with automatic or
line transfer equipment. Failure of the start disconnect relay to
operate will cause the start circuit to remain clos.ed after the plant
starts and will allow an excessively high voltage to reach the bat-
teries. .
Failure of the reverse current relay (charge relay) may cause the
charge ammeter to show a discharge of approximately 7 amps when the
plant is stopped. Replace the relay with a new one if cleaning the
contact points with a hard finish paper does not remedy the situation.
The correct adjustment is obtained by setting the spring tension to
allow the relay points to open at 12.6 volta and close at 15.4 volts
when tested on .11. test bench.
The voltage regulator relay should allow a charge rate of approxi-
mately 6 amps when the batteries are. less than 3/4' fully charged.
As the batteries approach a fully charged condition the charge rate
should drop to approximately 2 amps or less. The spring tension may
be increased to advance the high charge rate cut in point, or de-
creased to retard the point at which the high charge rate beco~es
effective.
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Onan 6GO-F Specifications

General

Brand	Onan
Model	6GO-F
Category	Inverter
Language	English