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 ELECTRIC PROTECTIVE SYSTEM
SYSTEMS OPERATION
ELECTRIC PROTECTIVE SYSTEM FUNCTIONAL TEST
Check each system of the engine as shown to verify if all components of the protective system works
properly. To find the correct engine speed, make reference to SPEED SPECIFICATION CHART in
troubleshooting procedures for overspeed verify test (Procedure D).
TEST I. OVERSPEED (AIR AND FUEL SHUT-OFF)
STEP
RUN ENGINE AT:
ACTION
CORRECT RESULT
25 5 rpm Less Than Verify rpm
A.
Press 75% Verify Button
No Engine Shutdown
(75% Overspeed)
25 5 rpm More Than Verify
B.
Press 75% Verify Button
Air and Fuel Shut-off
rpm (75% Overspeed)
C.
Manually Reset Air Shut-off Lever At Top Of Air Inlet Housing and Press ESS Reset Button.
TEST II. REVERSAL AND CRANK
TERMINATION (FUEL SHUT-OFF ONLY)
STEP
RUN ENGIN AT:
ACTION
CORRECT RESULT
A.
Any Speed Above Crank
Put Jumper Across Terminals
Fuel Shut-off
Terminate rpm
ESS-16 & ESS-17
B.
Remove Jumper From Terminals ESS-16 and ESS-17
TEST III. NORMAL SHUT-OFF SWITCH (FUEL SHUT-OFF ONLY)
STEP
RUN ENGINE AT:
ACTION
CORRECT RESULT
A.
Any Speed Above Crank
Push Shut-off Switch to OFF
Fuel Shut-off
Terminate rpm
Position
TEST IV. OIL PRESSURE (FUEL SHUT-OFF ONLY)
STEP
RUN ENGINE AT:
ACTION
CORRECT RESULT
25 5 rpm Less Than Oil Step
A.
Put Jumper Across Terminal 1
No Engine Shutdown
& Terminal 2 of Oil Pressure
Speed
Switch OPS2
B.
-
Remove OPS2
-
Fuel Shut-off After 9 1
C.
Same Speed as Step A
Put Jumper Across Terminal 1
& Terminal 3 of Oil Pressure
Seconds
Switch OPS1
D.
-
Remove Jumper From OPS1
-
25 5 rpm More Than Oil Step
E.
After 9 Seconds, Put Jumper
Fuel Shut-off
Across Terminals 1 and
Speed
Terminal 2 (OPS2)
F.
Remove Jumper From OPS2 Terminals 1 and 2
TEST V. WATER TEMPERATURE (FUEL SHUT-OFF ONLY)
STEP
RUN ENGINE AT:
ACTION
CORRECT RESULT
A.
Any Speed Above Crank
Put Jumper Across Terminals
Fuel Shut-off
Terminal rpm
TS11 & TS 22
B.
Remove Jumper From Terminals TS11 and TS 22
485
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