5/10KW TQG DC CIRCUITS
• Preheat Circuit• Crank Circuit• Fuel Circuit• Field Flash Circuit• Battery Charging
Circuit
PREHEAT CIRCUIT
In a cold weather environment with S1 in position #1, the intake
manifold/ head fails to warm up
CIRCUIT COMPONENTS
• K18: Preheat relay
• HTR1, and HTR2: heaters
add HTR3 & 4 for 10KW units
Start Here
CB1-Pushed inS17 Pulled outS10 @ Normal
Start Here
L4 1
L4 +
B1 +
THIS IS THE BEGINNING OF THE RETURN PATH
Once current LEAVES the S1 it will take the same path back to the power source.
Don’t go thru the K2 because it is not energized.
K18 IS’NT ENERGIZED YETCONTACTS STILL OPEN
Now the K18 is energized.
L4 1
Contacts close
CRANK CIRCUITS-1 is in position 5, generator fails to crank.
CIRCUIT COMPONENTS
• K16: Crank disconnect relay
• K2: Cranking relay.
• L4: Starter solenoid.
• B1: Cranking motor(starter).
Start Here
Energize K16Start Here
TB
5 12
TB6
Don’t go thru the K2 because it is not energized.
Now K16 is energized.
Energize K2
Start Here
Once the current reaches the S1 it takes the same path back to the power source.
S1
Start Here
L4 is energized and the starter motor engages.
FUEL CIRCUITWith the S-1 in position 5, the generator cranks and fails to start/ runs & when the S-1 is released TO position 4, the generator shuts OFF.
CIRCUIT COMPONENTS
• L5: Fuel shut off solenoid.
• E2: Fuel pump.
Start Here
S14 WILL OPEN @ 900RPM
Energize E2
Start Here
Once current reaches the S1 it will take the same path back to the power source.
Don’t go thru the K2 even though its energized.
You cant go thru the K18 since its not energized.
Now E2 is energized.
Once current reaches K2 A1It follows current back to the
power source.
Once current reachesTB4-12, it flows back to power source.
INITIALFIELD FLASH CIRCUIT
While holding S1 is in position 5, generator cranks and runs. You
observe no hertz and no volts on the meters M1 & M2
CIRCUIT COMPONENTS
• K15: Field flash relay.
• G1: Main AC generator
F1 F2
G1
Start Here
S14 Senses the Engine Speed Via MPU@ 900RPM S14 OPENS & K16 de-energizes
Energize K15
Start Here
Once current reaches the S1 it will take the same path back to the power source.
Now K15 is energized.
Flash G1
Start Here
Once current reachesTB5-14, it flows back to power source.
BATTERY CHARGING CIRCUIT
With S1 in position 4, and the generator running. The battery
charging ammeter (M4) shows a discharge reading.
CIRCUIT COMPONENTS
• G2: Battery charging alternator.
• FU1: Fuse
Start Here
Start Here
Once current reaches the S1 it will take the same path back to the power source.
Start Here