海宝等离子电源HPR130维修步骤

1、系统 故障排除 Page 2Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.关键部分关键部分:互锁 气体引导弧浪涌回路斩波器 电流控制控制电压 冷却液CNC控制器和调高接口易损件 Page 3Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission o

2、f Hypertherm, Inc.在上电时等离子电源会检查一些数据后判定自身是否安全. 对于高性能等离子互锁出错的检测是由传感器来读取并反馈给DSP (数字信号处理器). 这就远胜于链式开关信号LED的显示(如 HT2000).HPR 会将出错指示显示在气体控制器上(手动气体控制器)或显示在CNC控制器上(自动气体控制器). RHF door switchXformer tempswitchCoolant levelswitchShield pressure switchPlasma pressure switchCoolant flowswitch前面板上的互锁前面板上的互锁 LEDsHT

3、2000Xformer tempsensorShield pressure switchCoolant flowswitchPlasma pressure sensorCoolant levelsensorHPRHPR control board互锁互锁 LEDs出错出错 显示显示LEDNs Page 4Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.错误指示错误指示 LEDs:冷却液流量冷却液流量

4、LED 会亮会亮,如果流量低于如果流量低于.6 gpm (2.3 lpm)压力压力 会亮会亮,如果是如果是: 等离子气预流压力低于等离子气预流压力低于15 psi (103 kPa) 等离子气切割流压力低于等离子预流气压力低于等离子气切割流压力低于等离子预流气压力低于50 psi (345 kPa) 保护气预流压力低于保护气预流压力低于2 psi (14kPa) 任何气体压力大于任何气体压力大于99 psi (683 kPa)电压电压 LED 会亮会亮, 如果输入电压超过如果输入电压超过15% 的上下波动的上下波动.温度温度 LED会亮会亮,如果是如果是: 斩波器温升超过斩波器温升超过83 C

5、 (180 F) 冷却液温升超过冷却液温升超过70 C (158 F) 主变压器温升超过主变压器温升超过 150 C (302 F) Page 5Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.冷却液温度和流量传感器冷却液温度和流量传感器 在等离子电源箱右侧在等离子电源箱右侧流量传感器 温度传感器 Page 6Copyright, 2005 Hypertherm, Inc.These materia

6、ls cannot be reproduced in any form without the permission of Hypertherm, Inc.冷却液温度和流量传感器信号接到控制板冷却液温度和流量传感器信号接到控制板上的上的J201.在在 2 和和3 针脚上测试流量传感器的输出针脚上测试流量传感器的输出5VDC = 4.5 gpm (17 lpm)临界点是临界点是 .6 gpm (0.2 lpm) or .67VDC (最小最小)在在5 和和6针脚上测试温度传感器的输出针脚上测试温度传感器的输出临界点是临界点是 2.8 VDC (最大最大) Page 7Copyright, 200

7、5 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.所有所有Hypertherm 等离子切割系统有两等离子切割系统有两个主要电气部分组成个主要电气部分组成:弧电源部分弧电源部分: 这部分电路用于产生电弧. 包含主接触器,主变压器, 斩波器和电感. 控制电压部分控制电压部分: 这部分用于其它功能. 包含控制变压器, 电源分配板, 各种传感器和控制装置. 输出输出:24, 120 和 240 VAC 到电源分配板输出输出:215 VA

8、C 到斩斩波器波器控制变压器控制变压器主变压器主变压器主接触器主接触器,HPR 接线桩接线桩用户提供的用户提供的开关开关HyPerformance PAC480 VAC 3480 VAC 1 Page 8Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.产生稳定的弧是最重要的,与此相关的部件在等离子电源中的多要参与:引导弧电路浪涌电路斩波器单元弧 电流控制 Page 9Copyright, 2005

9、Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.一些相关的部件按时序工作来建立弧HPR130 Torch CircuitMachine On - No Start Signal4.00 VDC = 100 AmpsGRNF3J2+15SignalShieldCS3L1C1+ OutWHTT1 High Voltage- OutI/O PCBControl PCBGRNDC+J12DC-K1NozzleDC+ PilotCR1H9J

10、3Common(OPEN)0.0 VDCHigh Frequency ConsoleH8-15Chopper ControlHPR ChopperJ10.0 VDCCS1Work (+)Power Distribution BoardBLKSignalJ301J5+15Electrode (-)REDJ10T2 Air CoreBetween WHT and BLKJ1Spark Gaps-15Common(3) 1400 pFCapacitors150 AJ3J200WHTPilot ArcControllerBLKRED3412781112123411121314+36HPR130 Tor

11、ch CircuitPre-Flow/Pilot Arc Mode4.00 VDC = 100 AmpsGRNF3J2+15SignalShieldCS3L1C1+ OutWHTT1 High Voltage- OutI/O PCBControl PCBGRNDC+J12DC-K1NozzleDC+ PilotCR1H9J3Common(CLOSED)0.0 VDCHigh Frequency ConsoleH8-15Chopper ControlHPR ChopperJ1.8 to 1.4 VDCCS1Work (+)Power Distribution BoardBLKSignalJ301

12、J5+15Electrode (-)REDJ10T2 Air CoreBetween WHT and BLKJ1Spark Gaps-15Common(3) 1400 pFCapacitors150 AJ3J200WHTPilot ArcControllerBLKREDPilot Arc3412781112123411121314+36Work (+)HPR130 Torch CircuitAfter Arc Transfer4.00 VDC = 100 AmpsGRNF3J2+15SignalShieldCS3L1C1+ OutWHTT1 High Voltage- OutI/O PCBCo

13、ntrol PCBGRNDC+J12DC-K1NozzleDC+ PilotCR1H9J3Common(OPEN)5.2 VDCHigh Frequency ConsoleH8-15Chopper ControlHPR ChopperJ15.2 VDCCS1Power Distribution BoardBLKSignalJ301J5+15Electrode (-)REDJ10T2 Air CoreBetween WHT and BLKJ1Spark Gaps-15Common(3) 1400 pFCapacitors150 AJ3J200WHTPilot ArcControllerBLKRE

14、DCutting Arc3412781112123411121314+36 Page 13Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.该板是所有相关部件工作的起点该板是所有相关部件工作的起点电源分配板控制板 Page 14Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without

15、 the permission of Hypertherm, Inc. 缺相检测. 三相进线通过F5, F6 和F7保险后后进入电源分配板. 任何一个保险坏了, 表明该板有问题.F5 F6 F7 Page 15Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.通过该板输出的电压也安装有保险通过该板输出的电压也安装有保险F2 是用于 24 VAC 在继电器前F3是用于120 VAC F1 是用于 24

16、VAC 在继电器后F4 是用于240 VAC Page 16Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.输出的电压有输出的电压有 LEDs指示指示:D1 亮 表明电压被送到主接触器D2亮 表明电压被送到引导弧继电器D5亮 表明电压被送到高频箱的高压变压器.亮 表明电压被送到I/O板的浪涌继电器 Page 17Copyright, 2005 Hypertherm, Inc.These materi

17、als cannot be reproduced in any form without the permission of Hypertherm, Inc.在该板上的电压也有在该板上的电压也有 LEDs 指示指示,送到冷却电机的也有送到冷却电机的也有LED指示指示.D33亮标明板上有+15 VDC D32亮标明板上有-15VDCD31亮标明板上有+5 VDC.D26 亮表明电压被送到冷却泵电机D25 亮标明板上有+24 VDC Page 18Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any

18、form without the permission of Hypertherm, Inc.定期检查主接触器的触点定期检查主接触器的触点. Page 19Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.有凹痕或磨损的触点会引起缺相有凹痕或磨损的触点会引起缺相,损坏斩波器损坏斩波器. Page 20Copyright, 2005 Hypertherm, Inc.These materials can

19、not be reproduced in any form without the permission of Hypertherm, Inc.HPR新型斩波器新型斩波器. Page 21Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.LED 1 占载率占载率D2 5V 电压电压LED2 18V 电压电压 Page 22Copyright, 2005 Hypertherm, Inc.These ma

20、terials cannot be reproduced in any form without the permission of Hypertherm, Inc.HPR 斩波器的特点斩波器的特点电流输出从100A增加到130A.并行的100-A IGBTs. 简化的电路.斩波器斩波器上没有过流保护.只要控制板不输出信号给斩波器它有不会有输出斩波器它有不会有输出. Page 23Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of H

21、ypertherm, Inc.HPR 斩波器的功能斩波器的功能 :输入整流桥连同铝电解电容把输入的交流电转换成直流电.IGBTs 担当高速并行开关(14 KHz) 来调节电流的输出.控制板对斩波器的输出起到控制和监控. Page 24Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.检查开路电压检查开路电压:开路电压是斩波器不带负载是开路电压是斩波器不带负载是的输出的输出(没有弧转移没有弧转移).关闭

22、电源.拔去高频箱中高压变压器上的120V插头.如图所示.拔去插头拔去插头 Page 25Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.检查开路电压检查开路电压: 取下并检查斩波器保险 F3*.给出起动信号, 检查斩波器上输入整流桥的输出端上电压是否是310VDC检查斩波器下部”WORK” 和”TORCH”连接端上的电压是否是310V.如上述电压没有的话, 请按照维修章节中的描述做斩波器测试.* N

23、ote: The chopper fuse in the HPR130 is on the positive lead. Removing it does not disconnect the chopper from the electrode Page 26Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.切割电流通过切割电流通过2个电流传感器被检测个电流传感器被检测.CS3 弧转移电流传感器弧转

24、移电流传感器CS1 是用于斩波器电流输出的调节是用于斩波器电流输出的调节.两个传感器的输出和电流输出是线性关系:4.00 VDC = 100 amps Page 27Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.电流传感器的信号接到控制板上电流传感器的信号接到控制板上J3.200插插头上头上.CS3 的输出的输出(弧转移电流弧转移电流) 在在pins 3 和和4.CS1 的输出的输出(斩波器电流斩

25、波器电流) 在在pins 13 和和14.红红 +15V绿绿 -15V白白 信号信号黑黑 公共端公共端切割过程中不能断开电流传感器信号切割过程中不能断开电流传感器信号 Page 28Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.控制板上有两排控制板上有两排LED 来显来显示不同的功能和系统的状示不同的功能和系统的状况况.LEDN 301LEDN 300J I H G F E D C B AJIHG

26、FEDCBA Page 29Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.A 运动信号: 弧转移被感知, CNC应该探测到运动信号.B 错误: 输出给CNC表明有错误被数字处理器(DSP)检测到.C RD 错误: 输出给CNC表明在渐降过程中有错误.D 和 E 不用F 引导弧使能: 打开启动电路.G 拐角: CNC发出信号给等离子电源要求降低切割电流. 一般用于在拐角的切割. Page 30Cop

27、yright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.H 穿孔: 从CNC接受到穿孔完成信号. I 保持: 表明保持信号在. 电源会等待从CNC发出的穿孔完成信号.J 启动信号: 等离子电源接受到启动信号. Page 31Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the per

28、mission of Hypertherm, Inc.A 高压变压器: 启动高压变压器.B 泵: 开起冷却液马达.C 主接触器: 让主接触器吸合.D 引导弧继电器: 让引导弧继电器吸合.E 不用F 浪涌选择: 让浪涌继电器吸合.等离子电源被设为划线工艺.G, H and I 不用J 缺相: 该灯条亮表明没有缺相. Page 32Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.等离子电源地址:HPR系

29、统允许系统允许4台等离子电源受一个台等离子电源受一个CNC控制控制. 每个电源有两个地址可以设定每个电源有两个地址可以设定 .J303 上跳线上跳线 提供了弧转移和运动信号通路地址提供了弧转移和运动信号通路地址S100 拨码开关提供串行拨码开关提供串行通讯地址通讯地址.串接终点跳线串接终点跳线 Page 33Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.多系统串接中的最后一个单元必须被设定跳线.必

30、须对串行通讯的数据流做一个终断必须对串行通讯的数据流做一个终断.以防止信号回头传递造成数据以防止信号回头传递造成数据丢失丢失. 多系统串接中的最后一个单元J107J108多系统串接中的其他单元 Page 34Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.转移信号通路在J303.CNC 接口电缆有接口电缆有4对通路让对通路让 CNC 定义每一个电源的弧转移信号的定义每一个电源的弧转移信号的通路通路,

31、也称作运动信号也称作运动信号. 跳线必须按下图所示跳线必须按下图所示:Unit 11 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 Unit 4Unit 3Unit 2 Page 35Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.电源定义串行通讯. HPR系统允许系统允许4台等离子电源受一个台等离子电源受一个CNC控制控

32、制. 接线图接线图 S100Switch 1 is ON侧面看侧面看 switch 1OFF侧面看侧面看 switch 1ON1 2 3 4 OFF1 2 3 4 OFF1 2 3 4 OFF1 2 3 4 OFF1 2 3 4 OFFUnit 1Unit 2Unit 3Unit 4这些设定是用于串行通讯时对这些设定是用于串行通讯时对 每个等离子电源的识别每个等离子电源的识别. Page 36Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permissio

33、n of Hypertherm, Inc.热交换器热交换器水箱水箱冷却液温度开关冷却液温度开关过滤器过滤器泵泵开关阀开关阀流量开关流量开关止回阀止回阀分配器分配器高频箱高频箱割枪割枪HPR要求一个封闭的水冷却系统,流量为每分钟一加仑 Page 37Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.冷却液流量问题引发冷却液流量问题引发:流量开关不满足 (冷却液出错).易损件寿命短.割枪和易损件发热. P

34、age 38Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.冷却系统故障排除冷却系统故障排除1.确保水箱是满的.2.检查在回水管上的流量为每分钟一加仑. Page 39Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm

35、, Inc.在回水管上检查流量在回水管上检查流量3.按下气体控制器电流调节按钮强制水泵起动.回水管回水管 Page 40Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.如果没有流量如果没有流量:6.检查马达是否得到240VAC.7.如果马达没转,取下泵再看.8.如果马达转, 检查联轴节和泵自身.马达马达泵泵 Page 41Copyright, 2005 Hypertherm, Inc.These m

36、aterials cannot be reproduced in any form without the permission of Hypertherm, Inc.高频火花隙引导弧继电器浪涌回路引导弧控制手动起弧步骤弧转移要建立等离子弧要建立等离子弧,必须要有一些装置和过程来建立弧必须要有一些装置和过程来建立弧 Page 42Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.诊断引导弧问题诊断引导

37、弧问题:检查高频火花.检查引导弧继电器(CR1).检查主接触器的触点(CON1).如果割枪没有起弧, 斩波器有输出,气体没有问题的, 那问题回出在引导弧回路上. Page 43Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.诊断引导弧问题诊断引导弧问题:检查浪涌回路 (稍迟). 检查引导弧起动电路控制 (稍迟).检查气路有无损坏和受限制.检查割枪电缆有无损坏和受限制.做气体泄漏测试做斩波器测试. P

38、age 44Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.Electrode (-)ShieldNozzleCH130 Chopper- Out+ Out120 Volts AC6000 Volts ACT1 High VoltageHigh Frequency Console(3) 1400 pFCapacitorsT2 Air CoreSpark Gaps Page 45Copyright,

39、2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.浪涌回路继电器在浪涌回路继电器在I/O板上板上.引弧继电器有罩引弧继电器有罩壳下壳下 Page 46Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.继电器功能继电器功能:CR1:

40、 引弧继电器使喷嘴和公件等电位,在起弧是必须吸合.K1: 浪涌继电器功能是改变浪涌电容的冲电电阻的阻值在划线过程中. 这将减小斩波器输出电流.在划线是必须吸合. Page 47Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.HPR130 Surge Injection CircuitElectrode (-)Work (+)ShieldNozzleChopper OutputInductor Out

41、putSurge Injection OutputPower Supply OutputPilot Arc StartThe output of the chopper is a series of pulsesAfter the inductor (L1) is charged its output is a series of pulses exactly out ofphase with the chopperThe surge injection capacitor (C1) discharges as soon as the circuit is established as the

42、 highfrequency breaks over between the electrode and the nozzleThe result is that there is enough current soon enough to establish thepilot arcC1CR1H9H8Pilot ArcControllerHPR Chopper-+101001010K+ Page 48Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the perm

43、ission of Hypertherm, Inc.Output currents as the pilot arc starts 时间电流输出电流输出电流浪涌电容放电斩波器 总电流 Page 49Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.诊断浪涌回路故障诊断浪涌回路故障:检查 R1, R2 和 R3 的阻值(手册上有数据).检查电容C1的状态.如果切割电流20 A或更小(划线), K1 吸合

44、. Page 50Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.控制板上发出控制板上发出”引导弧使能引导弧使能”信号信号打开起动电路板打开起动电路板. 这能够快速去除这能够快速去除喷嘴的接触在弧转移时喷嘴的接触在弧转移时. Page 51Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form

45、without the permission of Hypertherm, Inc. 起动电路(引导弧控制) 功能是: 在引导弧建立前提供一个小的阻抗给电路. 通过短接H8 和H9来去除该板的控制.短接短接 H8 和和H9 Page 52Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc. Dip 开关 S100 设定串行通讯地址. 跳线开关 J303 指定“运动” 或 “弧转移” 信号通过其对应的接口

46、电缆线给到CNC. 正因为4台HPR 可以受控于一个CNC, 所以有必要给每个HPR设定不同的身份地址. Page 53Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc. 37 孔孔型插座. 两条与之匹配的细线 一个单刀单掷开关19371836173516341533143213311230112910289278267256245234223212201插脚插脚 34 和和 15 要手动起弧, 你必

47、须要有一个测试接口: Page 54Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.气体系统割枪高度控制系统要建立等离子弧必须要有气体来产生电子和形成弧要建立等离子弧必须要有气体来产生电子和形成弧. Page 55Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the p

48、ermission of Hypertherm, Inc.HPR的用户操作界面在气体控制器上 Page 56Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.在电流调节钮上有出错显示窗在电流调节钮上有出错显示窗: (所有代码在手册上能找到所有代码在手册上能找到)状态开关必须选在错误指示上状态开关必须选在错误指示上任何一个错误任何一个错误LED亮的时候亮的时候出错显示出错显示: Page 57Copyr

49、ight, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.HPR是采用 调节器来代替流量阀的系统.主要的优势是调节器可以补主要的优势是调节器可以补偿偿 进气口压力进气口压力+/- 10 psi (69 kPa) 波动波动 Page 58Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the

50、permission of Hypertherm, Inc.H35/F5 INO2 INAIR INN2 INV1V3V2V12V11V10V9V8V7V6V5V4V13V14V19V18V17V16V20Vent to AtmospherePR4PR3PR2PR1P4P3P2P1PLASMA (Clear)SHIELD (Gray)电磁阀电磁阀压力传感器压力传感器调节器调节器 Page 59Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permissio

51、n of Hypertherm, Inc.气体泄露测试气体泄露测试 #1对于第一个 20 秒气体泄露测试 #1, 所有进气口电磁阀关闭所有 “开关阀组”上的阀打开允许气体系统中的压力释放到外部 Page 60Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.H35/F5 INO2 INAIR INN2 INV1V3V2V12V11V10V9V8V7V6V5V4V13V14V19V18V17V16V20

52、Vent to AtmospherePR4PR3PR2PR1P4P3P2P1PLASMA (Clear)SHIELD (Gray) Page 61Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc. Copyright, 2001 Hypertherm, Inc. These materials cannot be reproduced in any formwithout the permission

53、 of Hypertherm, Inc.气体泄露测试气体泄露测试 #1第一个 20 秒后“开关阀组” 上的阀关闭.所有压力传感器上读数必须为零, 或接近零.监控压力 20分钟,如果有上升,怀疑进气阀有泄漏. Page 62Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc. Copyright, 2001 Hypertherm, Inc. These materials cannot be reprod

54、uced in any formwithout the permission of Hypertherm, Inc.H35/F5 INO2 INAIR INN2 INV1V3V2V12V11V10V9V8V7V6V5V4V13V14V19V18V17V16V20Vent to AtmospherePR4PR3PR2PR1P4P3P2P1PLASMA (Clear)SHIELD (Gray) Page 63Copyright, 2005 Hypertherm, Inc.These materials cannot be reproduced in any form without the permission of Hypertherm, Inc.气体泄露测试气体泄露测试 #2第一个20秒, “开关阀组” 上的阀关闭.所有进气口阀打开,允许气体系统中的压力达到进气口压力. Page 64Copyright, 2005 Hypertherm, Inc.These materials cannot be reprodu