曲轴泵故障检修.doc

On-Line Trouble Shooting Guide 故障检修指导Introduction 说明In nearly all instances, pump failure is the result of improper installation or operation rather than normal wear. One of the most common causes of pump failure is improper or unnecessary service, often as a result of the operator attempting the service.几乎在所有一切情况下，不正确安装和运行比起磨损更能弓I起水泵失效引起水泵失效的最常见原因是不正确或者不必要的维修所引起的经常是由 于操作者不正确维修所致Each time the pump is serviced, the chance of pump failure as a result of improper service increases. The operator should be left with no reason or desire to open the pump for service.不正确的维修使水泵失效的可能性就会提高。

未经许可的人，不得擅自对泵进行维护和修理Usually requests for service are not made until the operation of the equipment has become so bad that it usually does not work.经常需在设备运行得很差之前提出维修申请The high pressure pump is generally one of the most dependable and best constructed components in a high pressure cleaner. The well-engineered pump may be installed in a not-so-well engineered system. All pumps have wear parts, which eventually need to be replaced.一般说来，高压水泵是高压清洗招厘最可靠的部件设计良好的水泵可能被安装设计不良的清洗机系统中所有的水泵都有磨损的部件，最后就需 要替换”In most cases, the high pressure pump is likely to outlast most other components as long as the pump is installed correctly and the system is operated properly. (This is a quote from The Universal Guide to High Pressure and Steam Cleaner Repair.)大多数情况卜, 一旦安装正确并且系统操作正确的话,高压水泵有可能使其他各个部件更经久耐用。

引用IT高压和蒸汽清洗修理通则”）Pump chattering caused by heavy cavitation can be mistaken for a broken connecting rod. To determine if cavitation is the source of the problem, open the upstream chemical injector completely while operating the system. If the noise leaves it is cavitation. If the system does not have an upstream injector hook up a positive feed system to the pump and operate the system.严重气蚀现象引起的泵振动，可能被误认为连杆破裂要确定气蚀是不是问题的起源，可在运行系统时是否完全打开药剂注射「I如果噪音消失了， 那就是气蚀如果系统中没有药剂注射器，要给水泵安装机械进料并运行整个系统Do not assume that the pump is the problem.假设水泵没有问题。

Set up a check list.制定一个检验表单Excessive noise:异常噪声Hot water热水Mounting bolts装配螺栓Cavitation 气蚀Vibrations in the system系统振动Worn valves阀门磨损Worn O-rings0型M、磨损Belts带子Pulleys 滑轮Bearings 轴承Connecting rods连杆Plunger rod pins柱塞杆销子Oil leaks:漏汕：Bad seals封口不好Red shipping cap has no been removed红色包装盖未取出Loss of pressure:压力降低Worn nozzle喷嘴磨损Bad pressure gauge劣质压力表RPM转每分钟Valves阀门Packings包装Valve seat O-rings型圈阀座Inlet pressure or flow进口压力或流量How to Start如何开始Ask the Right Question At the Right Time在合适的时间问恰当的问题Isolate the Problem 分类问题• Set Up a Diagnostic Procedure 建立一个诊断程序-Simple to Hard 从简至易• Logical Progression 合理的进展Use Simple Tools使用简单的工具-Eyes眼睛-Ears耳朵• Nose鼻子• Brain大脑Start With Observations 开始观察• Physical Inspection and Observations 实查和观察• Carefully Observe the Equipment In Operation 设备运行时仔细观察• Trace the Fluid Flow追踪液体流量Disregard False Impressions 忽略不良影响Dont Skip Any Steps不要跳过任何步骤• Start At Point A and Finish at Point Z A 开始 Z 点结束-Isolate the Problem 分累问题-Remember, Problems Can Cause Problems "切记，问题能引发问题”Pump Failures: There Are Several Reasons for Pump Failure, and Most Are Generally Connected with 水泵失效：水泵失效可能有几个原因，大多是和以下有关联-Improper Use不正确的使用• Insufficient or Dirty Water 水量不足 水源不净• Plugged Filters过滤器塞住• Kinked or Plugged Hoses软管塞住或打结• Cavitation 气蚀• Lack of Maintenance 缺少维护Fluid System流体系统NO FLOW:没有流体• No Power to the Pump水泵没有动力• Trigger Gun Not Opening触犯枪没有开启-No Water Source 没有水源-Clogged Spray Nozzle 喷嘴阻塞• Clogged Inlet Filter 进口滤器阻塞• Stuck Float Valve 浮阀卡死• Faulty Unloader减荷器问题• Pinched or Clogged Inlet Hose 进口软管收缩或阻塞-Inlet Valve(s) Not Open 进口 阀门没有开启LOW PRESSURE, ADEQUATE FLOW:低压，足够水量：• Worn, Incorrect, No Spray Nozzle喷嘴磨损，型号不对，没有喷嘴• Lance on Low Pressure Setting 低压喷管设置• Unloader/Regulator Improperly Adjusted 减压器/调节器调节不当• Pressure Gauge Inaccurate or Broken 压力表不精准或破损-Worn Pump Packings水泵包装磨损LOW PRESSURE, LOW FLOW:低压，低水量• Volume Improperly Adjusted 流量调节不当-Discharge Leaks 排放口泄漏• Chemical Injector Orifice Blocked 化学品注射空闭塞• Drive Belts Loose 传动带松动• Pump or Motor Not Running at Rated Speed泵或电机没有按额定转速运转• Stripped Pump Drive Coupling 联轴器问题• Defective Easy Start Valve 快速启动阀损坏• Malfunctioning Motor or Engine电机或发动机不正常工作LOW PRESSURE, VERY LOW FLOW:低压，较财量• Unloader Stuck In Bypass 旁路减压器问题• Outlet Restriction 出口限制• Clogged Nozzle 喷嘴阻塞-Restriction in the High Pressure Hose 高压软管限制-Debris in the System 系统碎片• Cavitation 气蚀• Clogged Inlet Hose or Filter 进口软管阻塞EXCESSIVE PRESSURE:超压:• Spray Nozzle Too Small 喷雾嘴过小• Faulty Pressure Gauge 压力表不完善• Unloader/Regulator Improperly Adjusted 减压器/调节器调节不当• Faulty Unloader/Regulator减压器/调节器不完善PUMP CHATTERS:水泵振动・Air in the System系统中的空气• Chemical Line Not Submerged化学品管线没有浸没• Inlet Line Kinked, Restricted, or Internal Hose Separation 进I I管线打结-Inadequate Water Supply 供水不足• Float Valve Is Stuck 浮阀黏结• Turbulence in the Float/Supply Tank 活动罐/供应罐混乱• Cavitation 气蚀。