dooch N747D, Руководство пользователя, Страница: 56 / 65

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BOOSTER PUMP SYSTEM
BOOSTER PUMP SYSTEM N747D
8. MC does not work in each pump;.
⑴
Check if each MC power is 220 V.
⑵
Verify shortages and contact points of 1. IPA, 2. IPC, 3. DPA
and 4. DPC wire in Pump-OPT.
9. There is big gap between analog pressure gauge and the current
pressure of LCD screen;
⑴
Check the maximum pressure sensor value in use.
⑵
Adjust the maximum pressure sensor value in the installer’s
setting screen.
10. Analog pressure gauge is very close to the current pressure of
LCD screen;
⑴
Adjust sensor correction value in the installer’s setting screen.
11. Main pump and auxiliary pump operate continuously;
⑴
Check the rotation direction of the pump ( it’s possible in test
operating).
⑵
Re-set the operating pressure and time of the auxiliary pump.
12. Auxiliary pump operates frequently;
⑴
In the user setting screen, re-set the operating pressure and
time of auxiliary, sequential stop pressure and time.
13. Only main pump operates.
⑴
In the user setting screen, re-set the shift time of main pump.
⑵
Shift the pump by operator with the front switch.
14. Frequent starting phenomenon happens in emergent operation
due to the inverter trouble;
⑴
In the user setting screen, re-set the sequential operation
pressure and time, sequential stop pressure and time.
15. It is changed to “sequential operation 2” by user;
⑴
Adjust the deviation of pressure switch.
16. Various alarms raise (Buzzer, Lamp operates);
⑴
Enter front numeric Key and initial screen Key once. (Buzzer
OFF, Lamp OFF)
⑵
Check the caused troubles and take corrections.