Safety
12 EN
04/2019
2.8 Faults
In case of a fault, immediately switch the pump off and
remove it from operation.
Have all faults repaired immediately.
Seized pump
If a pump seizes, and is switched on several times repeatedly, the
motor can be damaged. Observe the following points:
Do not switch the pump/unit on repeatedly.
Turn the motor shaft by hand. See point 6.1.3 on page 27.
Clean
pump.
2.9 Preventing
material
damage
2.9.1 Leakage and pipe breakage
Vibrations and thermal expansion can cause pipes to break.
Install the pump/unit in a manner which reduces structure-
borne and airborne noise transmission. When doing so,
observe relevant regulations.
If the pipe forces are exceeded, leaks can occur at the screwed
connection or the pump itself.
Do not use the pump as a fixed point for the pipe line.
Connect pipes free of load and mount them elastically. Install
compensators.
If the pump leaks, the unit may not be operated and must be
disconnected from the mains power supply.
2.9.2 Dry
running
If run dry, mechanical seals and synthetic parts can be destroyed
within only a few seconds.
Do not allow the pump to run dry. This also applies to
checking the rotation direction.
Purge air from pump and suction line prior to start-up.
2.9.3 Cavitation
Pipes which are too long increase resistance. This results in risk
of cavitation.
Ensure that the suction line does not leak.
Observe the maximum pipe length.
Only switch the pump on when the valve on the delivery side
is opened halfway.
Open the valve on the suction side completely.
Содержание Block Multi 100/250
Страница 3: ...DE DE Originalbetriebsanleitung Normblock Multi Block Multi VW61 21 030...
Страница 21: ...Transport und Zwischenlagerung 04 2019 DE 19 VW61 21 027 Abb 3 VW61 21 029 Abb 4...
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Страница 61: ...EN EN Translation of original operation manual Normblock Multi Block Multi Normblock Multi VW61 21 030...
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Страница 117: ...FR FR Traduction des instructions d utilisation originale Normblock Multi Block Multi VW61 21 030...
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Страница 235: ...IT IT Traduzione del manuale d istruzioni originali Normblock Multi Block Multi VW61 21 030...
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Страница 287: ...Dati tecnici 04 2019 IT 53 10 2 Curva caratteristica Fig 13...
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Страница 341: ...Datos t cnicos 04 2019 ES 49 BADU Block Multi Fig 12...
Страница 345: ...Datos t cnicos 04 2019 ES 53 10 2 Curva de rendimiento Fig 13...
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