水泵工作条件Working conditions for Pumps

安装Installation

水泵安装时必须保证电机轴保持水平。水泵启动时，松开电机背部的放气螺钉以便使泵内空气顺利排出。

短时间内，水泵转子转动驱使残余的空气经过轴心孔排出至系统中。

禁止水泵在缺水状态下干转运行。

The pump must always be installed with horizontal motor shaft. At start-up, the rotor cartridge need be vented by removing the plug in the top of the motor.

Within a short time, the rotor forces the remaining air out into the system via the shaft.

It is prohibited for pump dry running without water.

输送介质Transferring liquids

德鲁普DS系列屏蔽循环泵适用于以下液体：

l  洁净，无腐蚀，非易爆液体；不含固体颗粒或纤维

l  最大含量50%的乙二醇水溶液

l  不含矿物油的冷却液体

l  生活热水

l  软化水

液体中的任何添加物都不会对水泵功能造成影响。

若将该屏蔽循环泵用于输送粘度较高的液体，则水泵的水力性能将有所降低，因此在选择水泵时，应评估输送液体的粘度对水泵水力性能的影响。

DS circulation pumps are suitable for the following liquids:

l  clean, thin, non-aggressive and non-explosive liquids without solid particles or fibres

l  Water with up tp to 50% glycol contents

l  cooling liquids, not containing mineral oil

l  domestic hot water

l  softened water.

Any additives in the water must not influence the pump fuction. 

If the circulator pump is used for a liquid with a higher viscosity, the hydraulic performance of the pump will be reduced. When selecting a pump, the viscosity of the pumped liquid must be taken into consideration.

温度Ambient and liquid temperatures

输送液体的温度范围为：-25℃至+110℃；

水泵工作时的环境温度范围为：0℃至+40℃

Temperarue range for transferring liquids: -25℃ to +110℃

Ambient temperature when pump running: 0℃ to +40℃

进口压力Inlet pressure

为防止汽蚀产生噪音，并避免对水泵轴承造成损害，水泵进口处应维持以下最小进口压力：

To avoid cavitation noise and damage to the pump bearings, the following minimum pressures are required at the pump suction port.