TROUBLE-SHOOTING
GE 7000 HBSL/ HBSLE - AVR
GE 7500 HBSL/ HBSLE - AVR
M
40.2
REV.0 - 05/14
The motor does not start up, or
starts up and then stops imme-
diately
1) Key / engine switch in the wrong positions
2) Lack of or insufficient oil in the motor
3) Faulty motor stopping device (oil-alert)
4) Lack of fuel in tank or fuel tap closed
5) Fuel filter clogged
6) Bad gasoline. Gasoline oxidizes and deteriora-
tes over time, causing hard starting
7) Dirty or faulty spark plug
8) Battery not activated, low or faulty
9) Battery cable terminals loose or corroded
10) Cold motor
11) Other causes
1) Verify start-up procedure
2) Refill or top off
3) Replace
4) Refill the tank. Open the fuel tap
5) Clean or replace
6) Drain fuel tank and carburetor. Refuel with fresh gaso-
line.
7) Clean or check and eventually replace
8) Activate, recharge, or replace the battery
9) Tighten and clean. Replace if corroded
10) Hold the command CHOKE, after starting, for a time
longer
11) Consult the motor Operating Manual.
1) Air or fuel filter clogged
2) Bad gasoline
3) Overload
1) Check the air filter
2) Drain fuel tank and carburetor. Refuel with fresh gasoline
3) Check the connected loads and if necessary reduce
The motor does not accelerate.
Inconstant speed.
Too little power provided by motor
Other problems or inconveniences
on the engine
Consult the motor Operating Manual.
I
GB
F
WARNING
!
●
Have qualified personnel do maintenance and troubleshooting work.
●
Stop the engine before doing any work inside the machine. If for any reason the machine must be operated while working inside, pay attention moving
parts, hot parts (exhaust manifold and muffler, etc.) electrical parts which may be unprotected when the machine is open.
●
Remove guards only when necessary to perform maintenance, and replace them when the maintenance requiring their removal is complete.
●
Please wear the appropriate clothing and make use of the PPE (Personal Protective Equipment), according to the type of intervention (protective gloves,
insulated gloves, glasses).
●
Do not modify the components if not authorized. - See pag. M1.1 -
Problem
Possible cause
Solution
ENGINE
No-load output voltage too low or
too high
GENERATOR
1) Protection tripped due to overload
2) Differential protection device tripped
3) Protection devices defective
4) Alternator not exited
6) Faulty AVR
7) AVR fuse faulty
1) Incorrect engine running speed
2) Alternator fault
3) AVR with setting wrong or fault
1) Check the load connected and decrease
2) Check the insulation of the whole system: wiring, connec-
tions, connected load and check that there are no insulation
fault that cause leakage currents to earth
3) Replace
4) Carry out external excitation test as indicated in alternator
manual. Ask for intervention of Service Department
6) Replace
7) Replace
1)
Regulate speed to its nominal no-load value
2)
Check winding, diodes, etc. on alternator (See to alternator
manual). Repair or replace. Ask for intervention of Service
Department.
3) Adjust the Volt trimmer of AVR or replace
Absence of output voltage
19/05/14 25770-GB
1) Incorrect engine running speed due to overload
2) Load with cos
ϕ
less than the nominal one
3) Alternator fault
4) Faulty AVR
1)
Contacts malfunctioning
2) irregular engine revolution
3) Alternator fault
1) Check the load connected and decrease
2) Reduce or rephase load
3) Check winding, diodes, etc. on alternator (See to alter-
nator manual). Repair or replace. Ask for intervention
of Service Department.
4) Replace
1
)
Check electrical connections and tighten
2) Ask for intervention of Service Department
3) Check winding, diodes, etc. on alternator (See to alternator
manual). Repair or replace.
Ask for intervention of Service Department.
Corrected no-load voltage too low
with load
Unstable tension
