關(guān)閉的情況下長期運轉(zhuǎn)；

    5)、當(dāng)周圍的環(huán)境溫度達(dá)到30℃時，軸承溫度不能超過90℃，當(dāng)溫度再升高量，軸承溫度最多不應(yīng)超過100℃：

    6)、使用稀油潤滑，要定期檢查油位；油脂潤滑的深溝球軸承不需要維護(hù)。

    7)、檢查聯(lián)軸器上的彈性元件，一旦磨損，應(yīng)立即更換；

    8)、如果密封、冷卻、潤滑液不是用工作介質(zhì)，必須保證使用的液壓比進(jìn)口壓力高1．0～2.0巴。

    3、停止：

    1)、泵停止運轉(zhuǎn)時，先關(guān)閉出口閥，然后切斷電源：

    2)、關(guān)閉輔助管路。泵的軸封即使在停機(jī)狀量也要用密封潤滑油：

    3)、在冰凍或長期停止使用時，應(yīng)排除泵及管路中的介質(zhì)，以免冰裂。

    4)、當(dāng)輸送的介質(zhì)為對健康有害的液體時，應(yīng)將泵和管路內(nèi)介質(zhì)盡快排盡。

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.