MMD Equipment 150S-6A6 - Manual (Page 30)

4. Operation
4-3
4.2 Protection device
For prevention of troubles during operation, this machine is provided with various protection devices. If
the engine should shut down or circuit-breaker should trip owing to functions of the protection devices,
make sure to check and remove such cause of trouble. Then start operation again.
4.2.1 Warning and Emergency Display lamp
When the warning lamp glows, stop the machine immediately and take appropriate measures
to recover the situation.
Item Trouble Measures Monitor
Engine oil
pressure
This lamp goes on when engine oil
pressure drops during operation and
emergency stop is actuated. This lamp
lights off after engine stops.
Operating pressure: lower than 30psi
(0.2MPa)
Coolant
temperature
This lamp goes on when coolant temp.
rises. If coolant temp. rises more, engine
takes emergency stop. When coolant
temp. drops, this lamp lights off.
Temp. of lamp on：230°F（110℃）
Temp. of emergency stop：235°F（113℃）
Temp. of lamp off：228°F（109℃）
Overcrank
This lamp goes on when operator fails to
start engine, during automatic operation
mode.
Air filter
When air filter gets clogged and
differential pressure rises, lamp goes on.
Actuating differential pressure : more
than 0.9psi(6.2 kPa)
Diagnostic
lamp
This lamp blinks when engine trouble
happens. Then, a pattern of lamp signals
changes if “DIAGNOSTIC BUTTON” is
pushed. The pattern of lamp signals shows
what’s kind of trouble happens. Refer to
“OPERATOR’S MANUAL”(P37).
See 6.2
Troubleshooting
Warning and Emergency Display