KSB Etaseco C, Инструкция по установке и эксплуатации

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7. If the pump cannot reach its duty point, find out the cause. (
⇨
Section 6.1.4 Page
30)
CAUTION
Wrong direction of rotation
Vibrations during pump operation! Damage to the pump!
▷
If the pump cannot reach its duty point, check the characteristic curve. If
required, change the direction of rotation. (
⇨
Section 6.1.4 Page 30)
6.1.4 Checking the characteristic curve/changing the direction of rotation
Checking the characteristic curve
✓
The pump has been started up but cannot reach its duty point.
1. Switch off the pump (
⇨
Section 6.1.5 Page 30).
2. Prime and vent the pump (
⇨
Section 6.1.2 Page 28).
3. Slightly open the shut-off element in the discharge line.
CAUTION
Pump operation against closed discharge line
Damage to the stator and bearings due to overheating or dry running
▷
Only operate the pump against a closed discharge line for the test described in
this section.
▷
Never operate the pump against a closed discharge line for longer than 5
minutes.
4. Start up the pump.
5. When the pump has reached full rotational speed, close the discharge-side shut-
off element and check whether the head equals the shut-off head in the
characteristic curve.
6. If the value reached by the pump is more than 10 % below the shut-off head in
the characteristic curve, change the direction of rotation.
Changing the direction of rotation
✓
The shut-off head of the pump at full rotational speed is more than 10 % below
the corresponding value in the characteristic curve.
1. Switch off the pump. (
⇨
Section 6.1.5 Page 30)
DANGER
Unqualified personnel performing work on the pump set
Danger of death from electric shock!
▷
Electrical connection must be effected by a trained electrician only.
▷
Observe the regulations stipulated in IEC 30364 (DIN VDE 0100).
2. Take safety precautions for work on electric installations. (
⇨
Section 5.6 Page 24)
3. To change the direction of rotation, interchange two phases of the power
supply. (
⇨
Section 5.6.1 Page 24)
4. Check the characteristic curve again.
6.1.5 Shutdown
✓
The shut-off element in the suction line is and remains open.
1. Close the shut-off element the discharge line.
2. Switch off the motor and make sure the pump set runs down smoothly to a
standstill.
6 Commissioning/Start-up/Shutdown
30 of 60 Etaseco/Etaseco I