Caution: This document contains mixed page sizes ... - Cummins Onan

WARNING Accidental or remote starting can
cause severe personal injury or death. Before
removing a housing panel or access door, disconnect
the negative (−) cable at the battery to
prevent the engine from starting.
LINE CIRCUIT BREAKERS CB1, CB2
The line circuit breakers (Figure 11-3) are mounted
on the control panel and are accessible for replacement
through the front door. Disconnect all wiring
and check electrical resistance across the terminals
of each circuit breaker. Replace a circuit breaker
that does not reset or that does not close or open as
the handle is turned ON and OFF.
TERMINALS
FIGURE 11-5. RELAYS
SCHEMATIC
RELAYS K1, K2, K3
These relays are secured in a row above the intake
resonator (Figure 11-3) and are accessible for replacement
by removing the top enclosure panel. To
test a relay, apply 12 VDC across terminals 85−86
(Figure 11-5). Replace the relay if 30−87a (NO)
does not close or 30−87 (NC) does not open, or either
does not return to its normal position when power
is removed.
See Page A-1 for relay function.
VOLTAGE SENSE TRANSFORMER TX1
The voltage sense transformer is mounted in the top
of the intake resonator (Figure 11-6) and is accessible
for replacement by removing the top enclosure
panel. Disconnect all four leads and check electrical
resistance across the primary and secondary windings.
Replace the transformer if the resistance of either
winding is not as specified in the schematic.
FIGURE 11-6. VOLTAGE SENSE TRANSFORMER
11-5