dooch N747D - Page 34

34 BOOSTER PUMP SYSTEM
BOOSTER PUMP SYSTEM N747D
7. After changing to operation setup, make sure to press Key.
Set value is not changed until
input key is pressed.
The changeable items in installer setting [2] are as below;
- Pump maximum pressure : Entering the maximum pressure of pump.
Changing of pump maximum pressure settings.
(Example: In case of to change 10.0 to 20.0)
1. Using
Key, select .
2. Initially the first ‘1’ of the ’10.0’ blinks.
3. Enter in order of 2, 0 and 0 using
Key.
4. After changing to required value, make sure to press
Key.
※ Set value is not changed until input key is pressed.
- Preventing frozen rupture : In order to prevent frozen rupture in cold season, if
all pumps does not operate for one minute at below -1°C, main pump operates in
15Hz for 15 seconds then stops. After stopping, the main pump is transferred to
next pump and operates as same condition in turns.
Change prevention of frozen rupture setting.
(Example: In case of change “No use” to “Use”. )
1. Using
Key, select .
2. Enter by using
Key.
: No use, : Use
3. After changing to required value, make sure to press c Key.
※ Set value is not changed until input key is pressed.