MMD Equipment 40S-8B1 - Manual (Page 23)

4. Operation
4-2
4.2 Protection device
 For prevention of troubles during operation, this machine is provided with various protection devices.
When the engine stops due to function of the protection devices and circuit breaker trips, get rid of the
causes of trouble, referring to the trouble shooting clause and then restart operation.
4.2.1 List of protection devices
 This machine is equipped with the following devices in the table. Repair and make necessary
treatment in accordance with the item ○.
Item
Engine
stops
Three-phase
circuit
breaker trips.
Lamp
display
Monitor Functions
Engine oil pressure
drop
○ ― ○
When engine oil pressure drops, it
functions.
Operating pressure:
lower than 7.3psi (0.05MPa)
Engine water
temperature rises.
○ ― ○
In case of abnormal rise of engine
water temperature, it functions.
temperature reaches:
more than 230°F (110℃)
Over crank ○ ― ○
This lamp goes on when operator
fails to start engine, during
automatic operation mode.
Clogging of air filter ― ― ○
When air filter is clogged and it
becomes necessary to clean it, it
functions.
＊
Oil Fence
― ― ○
When more condensate (fuel,
engine oil and coolant) than 1/3 of
capacity in the oil fence is
accumulated, monitor lamp lights.
Discharged battery ― ― ○
It functions in case of faulty
battery.
GLOW/DIAGNOSIS ― ― ○
When starter switch is “ON”, the
Monitor lamp glows and goes off
after preheating is performed.
GLOW/DIAGNOSIS
― ― ○
When the engine fails, the
diagnosis lamp glows.
Diagnosis lamp glowing pattern
indicates states of engine failure.
Overcurrent or short
circuit
― ○ ― ―
In case of overload or short circuit
accident, it functions.
Engine troubles
― ― ○ ―
Refer to 6.2.1 “Engine troubles”
＊ When the monitor lamp lights in the oil fence, immediately drain it.
(For the capacity of the oil fence, refer to 8.1 Specifications). To protect environment, do not drain it
directly into rivers. (For details, see 4.4)