关闭的情况下长期运转；

    5)、当周围的环境温度达到30℃时，轴承温度不能超过90℃，当温度再升高量，轴承温度最多不应超过100℃：

    6)、使用稀油润滑，要定期检查油位；油脂润滑的深沟球轴承不需要维护。

    7)、检查联轴器上的弹性元件，一旦磨损，应立即更换；

    8)、如果密封、冷却、润滑液不是用工作介质，必须保证使用的液压比进口压力高1．0～2.0巴。

    3、停止：

    1)、泵停止运转时，先关闭出口阀，然后切断电源：

    2)、关闭辅助管路。泵的轴封即使在停机状量也要用密封润滑油：

    3)、在冰冻或长期停止使用时，应排除泵及管路中的介质，以免冰裂。

    4)、当输送的介质为对健康有害的液体时，应将泵和管路内介质尽快排尽。

additionally be evacuated(a vacuum must be created).

    2. Running:

    1) . As soon as the pump starts to deliver this can be recognized by the rising gauge pressure slowly open the delivery gate valve fully.

    2). All additional connections for cooling, heating,  lubrication irrigation or sealing liquid etc, if fitted, must be opened fully or switched on and the flow must be checked.

    3) . Screw homogenizenously the nuts on the pump packing gland so as to the leakage of liquid is little, at the same time, pay more attention to the packing case temperature rising.

    4) . Prolonged operation against a closed shut- off element is not permitted in order to prevent the medium handled from heating up.

    5). At room temperatures of up to 30℃ the bearing temperature should not exceed 90℃. At higher room temperature the bearing tempera-ture should be below 1O0℃.

    6) . If the pump features oil- lubricated bearings, the correct oil level must be verified at regular.

    7). If the flexible coupling elements begin to show signs of wear,  they should be replaced in due time.

    8) . If the liquid for sealing,  cooling and lubricating is taken from an external source, the pressure must be 1.0 to 2.0 bar higher than at the suction nozzle. The gland packing(if the pump is fitted with one)  should drip slightly during operation. The gland should only be gently tightened.

    3. Stopping

    1). While stopping the pump running, first turn off the brake valve on the discharge pipe passage way.

    2). Close the auxiliary connections. The shaft seal in pumps where the liquid is fed in under vacuum must also be lubricated with sealing liquid during standstill.

    3). In the event of frost and/or prolonged shutdowns,  the pump and if applicable the cooling chambers must be drained or otherwise protected against freezing.

    4) . Pumps handling liquids posing health hazards must be drecontaminated. When draining the edium see to it that there is no risk to persons or the environment.