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离心式冷水机组常见故障及维修方案

2016-06-17 17:34:19   来源:http://sxt.qblzl.com/       
导读:离心式冷水机组常见故障,1 蒸发压力过低 2 冷凝压力过高 3 油压差过低 4 油温过高 5 断水 6 主电机过负荷这六大问题。以下是小编搜集的一些解决方法,不过离心机组维修是一项专业活,用还是去找专业人员前来维修。
        离心式冷水机组是一种广泛使用的中央空调设备,不过在其日常使用和运行的过程中,用户会遇上一些常见故障。离心式冷水机组常见故障及其维修方法有哪些呢?今天就来和小编一起来学习吧!

离心式冷水机组常见故障和维修方法:

1、蒸发压力过低。

原因:

1、冷水量不足。
2、冷负荷少。
3、节流孔板故障。
4、蒸发器的传热管因水垢等问题而是传热恶化。
5、冷媒量不足。

维修方法:

1、检查冷水回路,是冷水量达到额定水量。
2、检查自动起停装置的整定温度。
3、检查膨胀节流管是否流畅。
4、清扫传热管。
5、补充冷媒到所需要的量。

2、冷凝压力过高

原因:

1、冷水量不足。
2、冷却塔的能力降低。
3、冷水温度太高,制冷能力太大,使冷凝器负荷加大。
4、有空气存在。
5、冷凝器管子因水垢等问题,传热恶化。

维修方法:
1、检查冷却水回路,调整至额定流量。
2、检查冷却塔。
3、检查膨胀节流管等,使冷水温度尽快接近额定温度。
4、进行抽气运转排除空气,若抽气装置需频繁运行,则必须找出空气漏入的部位并消除漏气。
5、清扫管子。

3、油压差过低

原因:

1、油过滤器堵塞。
2、油压调节阀开度过大。
3、油泵的输出油量减少。
4、轴承磨损。
5、油压表失灵。
6、润滑油中混入的制冷剂过多。

维修方法:

1、更换过滤器滤芯。
2、关小油压调节阀使油压升至额定油压。
3、解体检查。
4、解体后更换轴承。
5、检查油压表,重新标定压力传感器,必要时更换。
6、制冷机停车后务必将油加热器投入,保持给定油温

4、油温过高

原因:

1、油冷却器冷却能力降低。
2、因冷媒过滤器滤网堵塞而使油冷却器冷却用冷媒的供给量不足。
3、轴承磨损

维修方法:

1、调整油温调节阀。
2、轻松冷媒过滤器滤网。
3、解体后修理或更换轴承。

5、断水

原因:冷水量不足。
维修方法:检查冷水泵及冷水回路,调至正常流量。

6、主电机过负荷

原因:

1、电源相电压不平衡。
2、电源线路电压降大。
3、供给自主电动机的冷却用制冷剂量不足。

维修方法:

1、采取措施使电源相电压平衡。
2、采取措施减小电源线路电压降。
3、检查冷媒过滤器滤网并清扫滤网,开大冷媒进液量。

        离心式冷水机组出现故障,用户也不用着急,而是应该从出现的故障本身出发,看看可能是哪些方面的原因造成的,而后再采取相应措施去解决。不过离心机组维修是一项专业活,用还是去找专业人员前来维修。
 
 

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