13
7.5 [STEP] keys and [ENTER] key
Use the arrow keys to move the cursor on the LCD or to increase or decrease the set values.
Use the ENTER key to reset the alarm to the normal mode.
In the setting status of each mode, also use the ENTER key to determine the set data at the cursor position.
7.6 [INITIAL SET] key switch
The [INITIAL SET] key switch is to (store the mist density data under the maximum load in the controller)
when setting the full load. You can display the setting change screen by pressing the key long (for more than 3
seconds).
7.7 [TEST] key switch
You can select the test mode by pressing the [TEST] key switch.
The “FAILURE” message blinks for each of the sensor units as communication is disconnected between the
sensor units and the controller when the test mode is selected. The “RUN” message on the controller also blinks.
The test mode has the following functions:
1. Alarm operation check
2. Function check
1) LED/LCD ALL ON : To check that the LCD screen and LED lamps properly operate by turning
all of them on.
2) SWITCH CHECK
: To check that the key switches properly operate
3) OUTPUT CHECK : To forcibly turn the contacts on and off to check the function.
The
｢
1. ALARM OPERATION CHECK
｣
is to detect mist in the sensor and to check if the system properly
operates. You can check the proper operation of the system by temporarily lowering the alarm setting-off level
of one sensor unit to detect the “PRE ALARM” and “HIGH ALARM” set off at the density level of oil mist
generated during the engine in operation. See the [11.5 ALARM OPERATION CHECK] for the detailed
procedure.
The
｢
2. FUNCTION CHECK
｣
is to check if the individual displays and switches properly function.
The alarm output relays (external output) are operational in the test mode.
But avoid checking the functions in the test mode during the engine in operation. If there is no
other way than to check in the test mode, take necessary actions such as disconnecting the wire
for the external output or grounding the external output circuit.
(Always reconnect the wire after it is disconnected.)
!
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