7-5
7.4.1
How to switch basic information display
Normally, the display shows the pressure in the
discharge piping.
In special cases such as the activation of an
interlock, the occurrence of an alarm, or during
the freeze-proofing cycle, however, the display
shows the corresponding message based on the
sequence specified in Table 7-4.
To switch the indications on the display, press
the keys at the “Indication Switching Operation”
shown below.
The display automatically returns to normal
indication when no operation is carried out for 30
seconds.
Note
The displays for “Interlocking in operation,” “Alarm appearing,” or
“Freeze-proofing in progress” are indicated only when the necessary conditions
are met.
The “Number of starts time on the previous day” remains “0” for 24 hours after
the power is turned on.
Fig.7-4-1(b) Basic information display Changing the display item
Interlocking in operation
displayed
An alarm appearing
displayed
Ex.)
䚷
E002: Receiver tank low occurring
Pressure in discharge
piping displayed
Ex.) 38m H2O
Number of starts time on
the previous day displayed
Ex.) 107 times
Alarm log display transition
point
Buzzer
stop
Buzzer
stop
Direction
Direction
Display change
operation
When no operation
takes place for 30
seconds, the
indication
automatically returns
to the normal
indication.
Power voltage displayed
Ex.) 200V
Display
Fig. 7-4-1(a) Display
(e.g. when the pressure in discharge piping is 38 m·H
2
O)
