Technical data
OPERATION&MAINTENANCE MANUAL 
  37
Charging generator adopt silicon commutate and shunt excitation      JF21 model. 
It is comprised of three-phase A.C motor and silicon diode. The negative pole is 
grounded; otherwise, it may damage the generator. See operation and maintenance 
Manual for Silicon Commutate Generator of JF Series on operation and maintenance of 
the generator. 
 Tooth of starting motor and flying wheel gear ring of diesel is controlled by 
electromagnetic switch. When the starting switch is connected, the electromagnetic 
switch makes tooth of the gear and flying wheel gear ring, connect the circuit for starting 
the motor and then drive the flying wheel. 
After the diesel is connected, turn off the starting motor immediately. The iron 
core drives the gear to its original position under the control of spring. Continuation for 
use of the starting motor may not exceed 15 seconds. The interval for two starts shall be 
2-3 minutes. If the diesel can not be started for continual three times, please check and 
remove the faults. The duration for powering the electric heating plug may not exceed 30 
minutes. 










