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1. 发明授权

US5443368A Turbomolecular pump with valves and integrated electronic controls 失效
标题翻译：涡轮分子泵带阀门和集成电子控制器
公开(公告)号：US5443368A
公开(公告)日：1995-08-22
申请号：US92692
申请日：1993-07-16
申请人： Alan L. Weeks , Gerald J. Fortier , Stephen R. Matte' , Peter W. Gaudet , Martin Stein , Steven C. Rosner , Robert J. Lepofsky
发明人： Alan L. Weeks , Gerald J. Fortier , Stephen R. Matte' , Peter W. Gaudet , Martin Stein , Steven C. Rosner , Robert J. Lepofsky
IPC分类号： F04B37/08 , F04D19/04 , F04D27/00 , F04B49/00
CPC分类号： F04D27/00 , F04B37/08 , F04D19/04
摘要： A vacuum system comprises, as an integral assembly, a turbomolecular pump with drive motor, a vent valve, a purge valve, a roughing valve, a heater and an electronic control module. The control module has a programmed processor for controlling the motor and valves and is user programmable for establishing specific control sequences. The integral electronic control module is removable from the assembly and is connected to the other devices through a common connector assembly. Proper introduction of a purge gas through the purge valve is detected by detecting the current load on the pump drive or by detecting foreline pressure. To test the purge gas status, the purge valve may be closed and then opened as drive current or pressure is monitored. After power failure, the controller will continue normal drive of the turbomolecular pump so long as the speed of the pump has remained above a threshold value. Otherwise the vent valve will have been opened, and a start-up sequence must be initiated. During shutdown, power to the pump drive motor is discontinued and the vent valve is opened before the roughing valve is closed.
摘要翻译：真空系统包括作为整体组件的具有驱动马达的涡轮分子泵，排气阀，净化阀，粗加工阀，加热器和电子控制模块。控制模块具有用于控制电动机和阀的编程处理器，并且是用户编程的，用于建立特定的控制顺序。集成电子控制模块可从组件移除，并通过公共连接器组件连接到其他设备。通过检测泵驱动器上的当前负载或通过检测前级压力来检测净化气体通过清洗阀的正确引入。为了测试吹扫气体状态，可以关闭吹扫阀，然后在监视驱动电流或压力时打开。停电后，只要泵的速度保持在阈值以上，控制器将继续正常驱动涡轮分子泵。否则排气阀将被打开，启动顺序必须启动。在停机期间，停止对泵驱动电机供电，并在排气阀关闭前打开排气阀。

2. 发明申请

US20080267790A1 Electronically Controlled Vacuum Pump 审中-公开
标题翻译：电子控制真空泵
公开(公告)号：US20080267790A1
公开(公告)日：2008-10-30
申请号：US12170802
申请日：2008-07-10
申请人： Peter W. Gaudet , Robert J. Lepofsky , Alan L. Weeks , Gerald J. Fortier , Stephen R. Matte , Martin Stein , Steven C. Rosner
发明人： Peter W. Gaudet , Robert J. Lepofsky , Alan L. Weeks , Gerald J. Fortier , Stephen R. Matte , Martin Stein , Steven C. Rosner
IPC分类号： F04B23/08
CPC分类号： F04D27/00 , F04B37/08 , F04B49/065 , F04D19/04 , Y10S417/901
摘要： A vacuum system comprises, as an integral assembly, a vacuum pump with drive motor, a purge valve, a roughing valve and an electronic control module. A cryogenic vacuum pump and a turbomolecular vacuum pump are disclosed. The control module has a programmed processor for controlling the motor and valves and is user programmable for establishing specific control sequences. The integral electronic control module is removable from the assembly and is connected to the other devices through a common connector assembly. In the turbomolecular pump system proper introduction of a purge gas through the purge valve is detected by detecting the current load on the pump drive or by detecting foreline pressure. To test the purge gas status, the purge valve may be closed and then opened as drive current or pressure is monitored. After power failure, the controller will continue normal drive of the turbomolecular pump so long as the speed of the pump has remained above a threshold value. Otherwise the vent valve will have been opened, and a start-up sequence must be initiated. During shutdown, power to the pump drive motor is discontinued and the vent valve is opened before the roughing valve is closed.
摘要翻译：真空系统包括作为整体组件的具有驱动电动机，净化阀，粗抽阀和电子控制模块的真空泵。公开了一种低温真空泵和涡轮分子真空泵。控制模块具有用于控制电动机和阀的编程处理器，并且是用户编程的，用于建立特定的控制顺序。集成电子控制模块可从组件移除，并通过公共连接器组件连接到其他设备。在涡轮分子泵系统中，通过检测泵驱动器上的当前负载或通过检测前级管路压力来检测净化气体通过净化阀的适当引入。为了测试吹扫气体状态，可以关闭吹扫阀，然后在监视驱动电流或压力时打开。停电后，只要泵的速度保持在阈值以上，控制器将继续正常驱动涡轮分子泵。否则排气阀将被打开，启动顺序必须启动。在停机期间，停止对泵驱动电机供电，并在排气阀关闭前打开排气阀。

3. 发明授权

US06022195A Electronically controlled vacuum pump with control module 失效
标题翻译：电控真空泵带控制模块
公开(公告)号：US06022195A
公开(公告)日：2000-02-08
申请号：US517091
申请日：1995-08-21
申请人： Peter W. Gaudet , Michael J. Eacobacci , Robert J. Lepofsky , David E. Roche , Alan L. Weeks , Gerald J. Fortier , Stephen R. Matte , Martin Stein , Steven C. Rosner
发明人： Peter W. Gaudet , Michael J. Eacobacci , Robert J. Lepofsky , David E. Roche , Alan L. Weeks , Gerald J. Fortier , Stephen R. Matte , Martin Stein , Steven C. Rosner
IPC分类号： F04B37/08 , F04B49/06 , F04D19/04 , F04D27/00 , F04B49/00
CPC分类号： F04D27/00 , F04B37/08 , F04B49/065 , F04D19/04
摘要： A vacuum system comprises, as an integral assembly, a vacuum pump with drive motor, a purge valve, a roughing valve and an electronic control module. A cryogenic vacuum pump and a turbomolecular vacuum pump are disclosed. The control module has a programmed processor for controlling the motor and valves and is user programmable for establishing specific control sequences. The integral electronic control module is removable from the assembly and is connected to the other devices through a common connector assembly. In the turbomolecular pump system proper introduction of a purge gas through the purge valve is detected by detecting the current load on the pump drive or by detecting foreline pressure. To test the purge gas status, the purge valve may be closed and then opened as drive current or pressure is monitored. After power failure, the controller will continue normal drive of the turbomolecular pump so long as the speed of the pump has remained above a threshold value. Otherwise the vent valve will have been opened, and a start-up sequence must be initiated. During shutdown, power to the pump drive motor is discontinued and the vent valve is opened before the roughing valve is closed.
摘要翻译：真空系统包括作为整体组件的具有驱动电动机，净化阀，粗抽阀和电子控制模块的真空泵。公开了一种低温真空泵和涡轮分子真空泵。控制模块具有用于控制电动机和阀的编程处理器，并且是用户编程的，用于建立特定的控制顺序。集成电子控制模块可从组件移除，并通过公共连接器组件连接到其他设备。在涡轮分子泵系统中，通过检测泵驱动器上的当前负载或通过检测前级管路压力来检测净化气体通过净化阀的适当引入。为了测试吹扫气体状态，可以关闭吹扫阀，然后在监视驱动电流或压力时打开。停电后，只要泵的速度保持在阈值以上，控制器将继续正常驱动涡轮分子泵。否则排气阀将被打开，启动顺序必须启动。在停机期间，停止对泵驱动电机供电，并在排气阀关闭前打开排气阀。

4. 发明授权

US06461113B1 Electronically controlled vacuum pump 失效
标题翻译：电控真空泵
公开(公告)号：US06461113B1
公开(公告)日：2002-10-08
申请号：US09454358
申请日：1999-12-03
申请人： Peter W. Gaudet , Robert J. Lepofsky , Alan L. Weeks , Gerald J. Fortier , Stephen R. Matté , Martin Stein , Steven C. Rosner
发明人： Peter W. Gaudet , Robert J. Lepofsky , Alan L. Weeks , Gerald J. Fortier , Stephen R. Matté , Martin Stein , Steven C. Rosner
IPC分类号： F04B4900
CPC分类号： F04D27/00 , F04B37/08 , F04B49/065 , F04D19/04
摘要： A vacuum system comprises, as an integral assembly, a vacuum pump with drive motor, a purge valve, a roughing valve and an electronic control module. A cryogenic vacuum pump and a turbomolecular vacuum pump are disclosed. The control module has a programmed processor for controlling the motor and valves and is user programmable for establishing specific control sequences. The integral electronic control module is removable from the assembly and is connected to the other devices through a common connector assembly. In the turbomolecular pump system proper introduction of a purge gas through the purge valve is detected by detecting the current load on the pump drive or by detecting foreline pressure. To test the purge gas status, the purge valve may be closed and then opened as drive current or pressure is monitored. After power failure, the controller will continue normal drive of the turbomolecular pump so long as the speed of the pump has remained above a threshold value. Otherwise the vent valve will have been opened, and a start-up sequence must be initiated. During shutdown, power to the pump drive motor is discontinued and the vent valve is opened before the roughing valve is closed.
摘要翻译：真空系统包括作为整体组件的具有驱动电动机，净化阀，粗抽阀和电子控制模块的真空泵。公开了一种低温真空泵和涡轮分子真空泵。控制模块具有用于控制电动机和阀的编程处理器，并且是用户编程的，用于建立特定的控制顺序。集成电子控制模块可从组件移除，并通过公共连接器组件连接到其他设备。在涡轮分子泵系统中，通过检测泵驱动器上的当前负载或通过检测前级管路压力来检测净化气体通过净化阀的适当引入。为了测试吹扫气体状态，可以关闭吹扫阀，然后在监视驱动电流或压力时打开。停电后，只要泵的速度保持在阈值以上，控制器将继续正常驱动涡轮分子泵。否则排气阀将被打开，启动顺序必须启动。在停机期间，停止对泵驱动电机供电，并在排气阀关闭前打开排气阀。

5. 发明授权

US07413411B2 Electronically controlled vacuum pump 失效
标题翻译：电控真空泵
公开(公告)号：US07413411B2
公开(公告)日：2008-08-19
申请号：US11115774
申请日：2005-04-27
申请人： Peter W. Gaudet , Robert J. Lepofsky , Alan L. Weeks , Gerald J. Fortier , Stephen R. Matté , Martin Stein , Steven C. Rosner
发明人： Peter W. Gaudet , Robert J. Lepofsky , Alan L. Weeks , Gerald J. Fortier , Stephen R. Matté , Martin Stein , Steven C. Rosner
IPC分类号： F04B49/00 , F04B17/03 , B01D8/00
CPC分类号： F04D27/00 , F04B37/08 , F04B49/065 , F04D19/04 , Y10S417/901
摘要： A vacuum system comprises, as an integral assembly, a vacuum pump with drive motor, a purge valve, a roughing valve and an electronic control module. A cryogenic vacuum pump and a turbomolecular vacuum pump are disclosed. The control module has a programmed processor for controlling the motor and valves and is user programmable for establishing specific control sequences. The integral electronic control module is removable from the assembly and is connected to the other devices through a common connector assembly. In the turbomolecular pump system proper introduction of a purge gas through the purge valve is detected by detecting the current load on the pump drive or by detecting foreline pressure. To test the purge gas status, the purge valve may be closed and then opened as drive current or pressure is monitored. After power failure, the controller will continue normal drive of the turbomolecular pump so long as the speed of the pump has remained above a threshold value. Otherwise the vent valve will have been opened, and a start-up sequence must be initiated. During shutdown, power to the pump drive motor is discontinued and the vent valve is opened before the roughing valve is closed.
摘要翻译：真空系统包括作为整体组件的具有驱动电动机，净化阀，粗抽阀和电子控制模块的真空泵。公开了一种低温真空泵和涡轮分子真空泵。控制模块具有用于控制电动机和阀的编程处理器，并且是用户编程的，用于建立特定的控制顺序。集成电子控制模块可从组件移除，并通过公共连接器组件连接到其他设备。在涡轮分子泵系统中，通过检测泵驱动器上的当前负载或通过检测前级管路压力来检测净化气体通过净化阀的适当引入。为了测试吹扫气体状态，可以关闭吹扫阀，然后在监视驱动电流或压力时打开。停电后，只要泵的速度保持在阈值以上，控制器将继续正常驱动涡轮分子泵。否则排气阀将被打开，启动顺序必须启动。在停机期间，停止对泵驱动电机供电，并在排气阀关闭前打开排气阀。

6. 发明授权

US06902378B2 Electronically controlled vacuum pump 失效
标题翻译：电控真空泵
公开(公告)号：US06902378B2
公开(公告)日：2005-06-07
申请号：US10095126
申请日：2002-03-08
申请人： Peter W. Gaudet , Robert J. Lepofsky , Alan L. Weeks , Gerald J. Fortier , Stephen R. Matté , Martin Stein , Steven C. Rosner
发明人： Peter W. Gaudet , Robert J. Lepofsky , Alan L. Weeks , Gerald J. Fortier , Stephen R. Matté , Martin Stein , Steven C. Rosner
IPC分类号： F04B37/08 , F04B49/06 , F04D19/04 , F04D27/00 , F04B35/04
CPC分类号： F04D27/00 , F04B37/08 , F04B49/065 , F04D19/04 , Y10S417/901
摘要： A vacuum system comprises, as an integral assembly, a vacuum pump with drive motor, a purge valve, a roughing valve and an electronic control module. A cryogenic vacuum pump and a turbomolecular vacuum pump are disclosed. The control module has a programmed processor for controlling the motor and valves and is user programmable for establishing specific control sequences. The integral electronic control module is removable from the assembly and is connected to the other devices through a common connector assembly. In the turbomolecular pump system proper introduction of a purge gas through the purge valve is detected by detecting the current load on the pump drive or by detecting foreline pressure. To test the purge gas status, the purge valve may be closed and then opened as drive current or pressure is monitored. After power failure, the controller will continue normal drive of the turbomolecular pump so long as the speed of the pump has remained above a threshold value. Otherwise the vent valve will have been opened, and a start-up sequence must be initiated. During shutdown, power to the pump drive motor is discontinued and the vent valve is opened before the roughing valve is closed.
摘要翻译：真空系统包括作为整体组件的具有驱动电动机，净化阀，粗抽阀和电子控制模块的真空泵。公开了一种低温真空泵和涡轮分子真空泵。控制模块具有用于控制电动机和阀的编程处理器，并且是用户编程的，用于建立特定的控制顺序。集成电子控制模块可从组件移除，并通过公共连接器组件连接到其他设备。在涡轮分子泵系统中，通过检测泵驱动器上的当前负载或通过检测前级管路压力来检测净化气体通过净化阀的适当引入。为了测试吹扫气体状态，可以关闭吹扫阀，然后在监视驱动电流或压力时打开。停电后，只要泵的速度保持在阈值以上，控制器将继续正常驱动涡轮分子泵。否则排气阀将被打开，启动顺序必须启动。在停机期间，停止对泵驱动电机供电，并在排气阀关闭前打开排气阀。

7. 发明授权

US09285091B2 LED light module 有权
标题翻译： LED灯模组
公开(公告)号：US09285091B2
公开(公告)日：2016-03-15
申请号：US13883721
申请日：2011-11-17
申请人： Markus Danner , Andreas Moser , Johannes Jungwirth , Gunther Krenn , Martin Stein
发明人： Markus Danner , Andreas Moser , Johannes Jungwirth , Gunther Krenn , Martin Stein
IPC分类号： F21S8/10
CPC分类号： F21S48/1241 , B60Q2400/30 , F21S41/143 , F21S41/24 , F21S41/26 , F21S48/1154 , F21S48/1266
摘要： The invention relates to a vehicle headlamp (1) for producing a main light distribution and an auxiliary light distribution, wherein the vehicle headlamp (1) comprises two or more LED light modules (10), wherein each of the LED light modules (10) comprises one or more primary LED light sources (11), wherein a primary LED light source (11′) comprises at least one light-emitting diode, comprises two or more secondary LED light sources (12, 12a), wherein a secondary LED light source (12, 12a) comprises at least one light-emitting diode (12′), and comprises a lens (13), wherein the light emitted by the at least one primary LED light source (11) is radiated directly onto the lens (13) and projected by the lens into the exterior space, wherein the light emitted by the primary LED light sources (11) of a all LED modules (10) forms the main light distribution, and wherein the light emitted by the secondary LED light sources (12, 12a) of an LED modules (10) is radiated onto the lens (13) of the LED module (10) by means of an optical waveguide (14), which lens (13) projects the light into the exterior space, and wherein the light emitted by the secondary LED light sources (12, 12a) of all LED modules (10) forms the auxiliary light distribution, wherein preferably at least one of the secondary LED light sources (12a) shines directly through the optical waveguide (14) in order to achieve a homogeneous light distribution contribution to the auxiliary light distribution, and wherein light is coupled by at least one of the secondary LED light sources (12) into the optical waveguide (14) via at least one light incoupling point (140) and exits directed substantially parallel via at least one light decoupling point (141) in order to produce a maximum contribution to the auxiliary light distribution.
摘要翻译：本发明涉及一种用于产生主配光和辅助配光的车辆用前照灯（1），其中，所述车辆用前照灯（1）包括两个以上的LED灯模块（10），其中，所述LED灯模块（10）包括一个或多个主要LED光源（11），其中主要LED光源（11'）包括至少一个发光二极管，包括两个或更多个次级LED光源（12,12a），其中次级LED光源源（12,12a）包括至少一个发光二极管（12'），并且包括透镜（13），其中由至少一个主要LED光源（11）发射的光直接辐射到透镜 13），并且由透镜投影到外部空间中，其中由所有LED模块（10）的主要LED光源（11）发射的光形成主光分布，并且其中由次级LED光源发射的光（12,12a）辐射到所述透镜（13）上所述LED模块（10）借助于光波导（14），所述透镜（13）将光投射到所述外部空间中，并且其中由所述LED模块的所述次级LED光源（12,12a）发射的光 10）形成辅助光分布，其中优选地，次级LED光源（12a）中的至少一个直接照射通过光波导（14），以实现对辅助光分布的均匀的光分布贡献，并且其中光是通过至少一个光耦合点（140）将次级LED光源（12）中的至少一个耦合到光波导（14）中并通过至少一个光去耦点（141）基本上平行地退出，以便产生对辅助光分布的最大贡献。

8. 发明申请

US20130223089A1 LED Light Module 有权
标题翻译： LED灯模块
公开(公告)号：US20130223089A1
公开(公告)日：2013-08-29
申请号：US13883721
申请日：2011-11-17
申请人： Markus Danner , Andreas Moser , Johannes Jungwirth , Gunther Krenn , Martin Stein
发明人： Markus Danner , Andreas Moser , Johannes Jungwirth , Gunther Krenn , Martin Stein
IPC分类号： F21S8/10
CPC分类号： F21S48/1241 , B60Q2400/30 , F21S41/143 , F21S41/24 , F21S41/26 , F21S48/1154 , F21S48/1266
摘要： The invention relates to a vehicle headlamp (1) for producing a main light distribution and an auxiliary light distribution, wherein the vehicle headlamp (1) comprises two or more LED light modules (10), wherein each of the LED light modules (10) comprises one or more primary LED light sources (11), wherein a primary LED light source (11′) comprises at least one light-emitting diode, comprises two or more secondary LED light sources (12, 12a), wherein a secondary LED light source (12, 12a) comprises at least one light-emitting diode (12′), and comprises a lens (13), wherein the light emitted by the at least one primary LED light source (11) is radiated directly onto the lens (13) and projected by the lens into the exterior space, wherein the light emitted by the primary LED light sources (11) of a all LED modules (10) forms the main light distribution, and wherein the light emitted by the secondary LED light sources (12, 12a) of an LED modules (10) is radiated onto the lens (13) of the LED module (10) by means of an optical waveguide (14), which lens (13) projects the light into the exterior space, and wherein the light emitted by the secondary LED light sources (12, 12a) of all LED modules (10) forms the auxiliary light distribution, wherein preferably at least one of the secondary LED light sources (12a) shines directly through the optical waveguide (14) in order to achieve a homogeneous light distribution contribution to the auxiliary light distribution, and wherein light is coupled by at least one of the secondary LED light sources (12) into the optical waveguide (14) via at least one light incoupling point (140) and exits directed substantially parallel via at least one light decoupling point (141) in order to produce a maximum contribution to the auxiliary light distribution.
摘要翻译：本发明涉及一种用于产生主配光和辅助配光的车辆用前照灯（1），其中，所述车辆用前照灯（1）包括两个以上的LED灯模块（10），其中，所述LED灯模块（10）包括一个或多个主要LED光源（11），其中主要LED光源（11'）包括至少一个发光二极管，包括两个或更多个次级LED光源（12,12a），其中次级LED光源源（12,12a）包括至少一个发光二极管（12'），并且包括透镜（13），其中由至少一个主要LED光源（11）发射的光直接辐射到透镜 13），并且由透镜投影到外部空间中，其中由所有LED模块（10）的主要LED光源（11）发射的光形成主光分布，并且其中由次级LED光源发射的光（12,12a）辐射到所述LED模块（10）的透镜（13）上 LED模块（10）通过光波导（14）发射，所述透镜（13）将光投射到外部空间中，并且其中由所有LED模块（10）的次级LED光源（12,12a）发射的光）形成辅助光分布，其中优选地，次级LED光源（12a）中的至少一个直接照射通过光波导（14），以实现对辅助光分布的均匀的光分布贡献，并且其中光耦合通过至少一个次级LED光源（12）经由至少一个光耦合点（140）进入光波导（14）中并且经由至少一个光去耦点（141）基本上平行地退出，以便产生对辅助光分布的最大贡献。

9. 发明授权

US06407761B1 System and method for the visual customization of business object interfaces 有权
标题翻译：用于可视化定制业务对象接口的系统和方法
公开(公告)号：US06407761B1
公开(公告)日：2002-06-18
申请号：US09309091
申请日：1999-05-10
申请人： Pong Ching , Martin Stein , Larry Chiang
发明人： Pong Ching , Martin Stein , Larry Chiang
IPC分类号： G06F300
CPC分类号： G06F8/34
摘要： A system and method for customizing an interface, or the set of methods, of a business object by pre-defining a number of parameters and fields available to the methods of the business object using a visual customization tool is provided. The interface of the business object consists of the set of methods available to it. The interface is customized such that only the necessary methods, parameters and fields are made available for programming. The set of methods is displayed in a menu-driven format through a graphical user interface. The user selects the method to customize, and the set of parameters available to that method is displayed. Then the user selects the parameters that are intended to be used, and the fields available to those parameters are displayed. The user can preset certain static fields to constant values. After customization, the underlying code of the method is generated automatically and saved.
摘要翻译：提供了一种用于通过使用可视定制工具预定义业务对象的方法可用的多个参数和字段来定制业务对象的接口或方法集合的系统和方法。业务对象的接口由可用的一组方法组成。接口被定制，使得只有必要的方法，参数和字段可用于编程。该组方法通过图形用户界面以菜单驱动的格式显示。用户选择要自定义的方法，并显示该方法可用的参数集。然后用户选择要使用的参数，并显示可用于这些参数的字段。用户可以将某些静态字段预设为常数值。自定义后，方法的基础代码自动生成并保存。

10. 发明申请

US20050196284A1 Electronically controlled vacuum pump 失效
公开(公告)号：US20050196284A1
公开(公告)日：2005-09-08
申请号：US11115774
申请日：2005-04-27
申请人： Peter Gaudet , Robert Lepofsky , Alan Weeks , Gerald Fortier , Stephen Matte , Martin Stein , Steven Rosner
发明人： Peter Gaudet , Robert Lepofsky , Alan Weeks , Gerald Fortier , Stephen Matte , Martin Stein , Steven Rosner
IPC分类号： F04B37/08 , F04B49/06 , F04D19/04 , F04D27/00 , B01D8/00
CPC分类号： F04D27/00 , F04B37/08 , F04B49/065 , F04D19/04 , Y10S417/901
摘要： A vacuum system comprises, as an integral assembly, a vacuum pump with drive motor, a purge valve, a roughing valve and an electronic control module. A cryogenic vacuum pump and a turbomolecular vacuum pump are disclosed. The control module has a programmed processor for controlling the motor and valves and is user programmable for establishing specific control sequences. The integral electronic control module is removable from the assembly and is connected to the other devices through a common connector assembly. In the turbomolecular pump system proper introduction of a purge gas through the purge valve is detected by detecting the current load on the pump drive or by detecting foreline pressure. To test the purge gas status, the purge valve may be closed and then opened as drive current or pressure is monitored. After power failure, the controller will continue normal drive of the turbomolecular pump so long as the speed of the pump has remained above a threshold value. Otherwise the vent valve will have been opened, and a start-up sequence must be initiated. During shutdown, power to the pump drive motor is discontinued and the vent valve is opened before the roughing valve is closed.

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