Ferrovac CTH40 Manual de usuario

Liquid nitrogen UHV Booster and Fast

Pump Down Dock

CTH40/CTDH40/VSCT40

Operation Manual

Revision C [June, 2023]

Ferrovac AG

Thurgauerstrasse 72

CH-8050 Zürich

Phone +41 44 273 16 38

[email protected]

www.ferrovac.com

Operation Manual

CTH40/CTDH40/VSCT40

Page|2/28

Rev. C

Important!

It is the sole responsibility of all users to carefully read the operating instructions and keep

them safe. Read and follow all safety instructions carefully before using the product described

in this document. Ferrovac declines any and all responsibility and liability for any

damage/injuries resulting from incorrect use/adjusting/controlling or programming of the

product.

Warranty

Ferrovac warrants this product to be free of defects in material and workmanship for 24 months from

the date of shipment. In the case of any defects, Ferrovac will either repair or replace the product at our

discretion.

Warranty limitations

The warranty for this product does not apply to defects resulting from the following:

• Non-observance of operational- and safety instructions

• Natural wear of components

• Consumables

• Modiﬁcations to our products without our written consent

• Misuse of any product or part of the product

This warranty stands in place of all other warranties, implied or expressed, including any implied

warranty of implied merchantability or ﬁtness for a particular use. The remedies provided herein are the

buyer’s sole and exclusive remedies.

Neither the company Ferrovac nor any of its employees shall be liable for any direct, indirect, incidental,

consequential or special damages arising out of the use of its products even if Ferrovac has been advised

of the possibility of such damages. Such excluded damages shall include but are not limited to: costs of

removal and installation, losses sustained as the result of injury to any person, or damage to property.

Ferrovac and is protected by Swiss copyright laws and international conventions. Ferrovac grants the

right for reproduction for the purchasers own use. No part of this manual may be reproduced or

transmitted by any third party in any form or by any means and for any purpose without the written

permission of Ferrovac.

Operation Manual

CTH40/CTDH40/VSCT40

Page|3/28

Rev. C

Contents

Terms and Symbols.............................................................................................................5

General Information............................................................................................................................ 6

Technical Specifications............................................................................................................ 9

1 Introduction..................................................................................................................... 11

2 Unpacking and inspection..........................................................................................11

3 Overview and description..........................................................................................13

4 Setup and installation................................................................................................13

4.1 Installation on a UHV chamber ...............................................................................................13

4.2 Temperature measurement and heating ...............................................................................15

4.3 Installation for cool-down.......................................................................................................16

5 Preparation for vacuum usage, venting......................................................................17

5.1 Pump-down ............................................................................................................................17

5.2 Venting....................................................................................................................................17

6 Cool down procedures 17

6.1 Cool-down of the dewar version CTDH40 .............................................................................. 17

6.2 Cool-down of the tube version CTH40 . .................................................................................. 17

6.2.1 Cool-down with a pressurized liquid nitrogen dewar ..........................................................17

6.2.2 Cool-down with liquefying N₂gas . .....................................................................................17

7 Warm up procedures..................................................................................................19

7.1 Warm up CTH40..................................................................................................................... 19

7.1.1 Warm-up by heating with the heating coil ........................................................................19

7.1.2 Warm-up with hot gas........................................................................................................20

7.2 Warm-up CTDH40 .................................................................................................................21

8 Maintenance..............................................................................................................21

8.1 Bake-out . .............................................................................................................................. 21

8.2 Cleaning.................................................................................................................................22

9 Performance data...........................................................................................................22

9.1 Cool-down and warm up of VSCT40 .....................................................................................22

9.2 Cool-down and warm up of VSCT40 with the new CTH40 installed......................................23

10 Wiring, cable layouts, temperature conversion ....................................................................23

Operation Manual

CTH40/CTDH40/VSCT40

Page|4/28

Rev. C

10.1 Temperature sensor ............................................ ...............................................................23

11 Upgrades and options...............................................................................................................29

11.1 Configured cabling.............................................................................................................. 29

11.2 Kit with cabling and power supply.......................................................................................29

12 Additional information..............................................................................................................29

12.1 Return of defective items ....................................................................................................29

12.2 Download ............................................................................................................................29

List of Figures

1 Symbols used in the drawings................................................................................................... 5

2 Overview drawings of the CTH40 (top) and CTDH40 (bottom) with their components.

The original drawings can be downloaded from our homepage in the

category UHV suitcase accessories.......................................................................................... 10

3 Example image for usage of the VSCT40 with cold trap and our NexGeneration

UHV suitcase........................................................................................................................... 11

4 Overview of the CTH40 (left) and CTDH40 (right) with their components........................... 12

5 Demonstration of mounting orientations for the CTDH40 and CTH40. The CTDH40

should only mounted in the up-right orientation.................................................................... 14

6 Schematic example for the usage of the VSCT40 with a chamber together with

our NexGeneration UHV suitcase. (Be aware that the valve and short flanges of

the VSCT40 have tapped holes.) ............................................................................................ 14

7 Flow chart for cooling with N2 gas and heat exchanger......................................................... 18

8 Examples for a pressure (left) and temperature (right) curves during cool-down

and warm-up of the CT40 (predecessor of CTH40)................................................................ 22

9 Measurement data taken with a VSCT40 on a typical CF63 turbo pump. On the

chamber of the VSCT40 our new VSCTH40 was installed...................................................... 24

10 Pin layout for miniature 6-Pin feed-through for temperature measurement including

Pt-Sensor and filament .......................................................................................................... 25

11 Connection cable layout (CABCTH40HTB4M or CABCTH40HT4M) for temperature

measurement including Pt-Sensor and filament. For the temperature

sensor 4 wires are available, the heating coil only as 2 wires. For the pin layout

of the 6-pin miniature connector please refer to Fig. 10, the pins are connected

respectively............................................................................................................................ 26

12 Graphical conversion of resistance into temperature for the Pt100 sensor.......................... 27

13 The CT-devices are available with a cable and power supply kit............................................ 27

List of Tables

1 Suggestion for a warm-up program for CTH40. (Voltage statements are only

rough numbers as they vary with temperature and exact length of the coil.)....................... 20

2 Suggestion for a warm-up program for CTDH40. (Voltage statements are only

rough numbers as they vary with temperature and exact length of the coil.) ..................... 21

Operation Manual

CTH40/CTDH40/VSCT40

Page|5/28

Rev. C

Terms and Symbols

The information in this document represents the state of the product at the date of print. Technical

changes may be made without notice. Ferrovac AG makes no warranties or representations with respect

to accuracy or completeness of the contents of this publication. Figures and photos are not binding. The

product names used are for identification purposes and may be trademarks of their respective

companies.

Symbol

Meaning

A triangle with explanation mark indicates a passage in the

manual with information that is crucial for the operator. READ

THESE PARAGRAPHS CARE-FULLY or the product might be

damaged by misuse.

A triangle with a snow flake indicates a passage in the manual

with information that is crucial for the operator with respect

to cryo cooling and handling cryogenic liquids. READ THESE

PARAGRAPHS CAREFULLY in order to protect

the operator from any injury.

A triangle with a gas bottle indicates a passage in the manual

with information that is crucial for the operator with respect

to laboratory gases under pressure. READ THESE PARAGRAPHS

CAREFULLY in order to protect the operator from any injury.

WARNING! The WARNING heading in a manual explains dangers that may result in personal injury

or death. Always read the associated information very carefully.

CAUTION! The CAUTION heading in a manual explains hazardous situations that could damage the

product. Such damage may invalidate warranty.

Figure 1 : Symbols used in the drawings.

Operation Manual

CTH40/CTDH40/VSCT40

Page|6/28

Rev. C

General Information

This manual covers all important information about installation, commissioning and operation of your

CTH40/CTDH40/VSCT40. It also provides essential safety information, maintenance- and fault finding

procedures.

The product described was manufactured in accordance with the applicable national standards and

guidelines. The information in this document represents the state of the product at the date of print.

Technical changes may be made without notice. Ferrovac makes no warranties or representations with

respect to accuracy or completeness of the contents of this publication. Figures and photos are not

binding. The product names used are for identification purposes and may be trademarks of their

respective companies.

Designated Use

The product described in this document may only be used for its designated application. Designated use

of the product is defined by the following rules:

The product is:

·Used with original cable sets supplied by Ferrovac which are explicitly speciﬁed for the use with

the product described in this publication.

·Used in an indoor research laboratory environment or an industrial production or processing

facility.

·Operated by personnel qualified for operation of delicate scientiﬁc equipment.

·Used in accordance with all related manuals.

Important!

Carefully read all safety instructions and relevant manuals before using the product and any

related equipment!

Non Designated Use

Non-designated use is defined if any of the following are true:

·The product is used with other equipment not explicitly acknowledged by Ferrovac in writing.

·The product is used outdoors or at ambient conditions exceeding the values given in the product

specification.

·The product is used by non-qualified persons.

·Operation of the product in disregard of the safety instructions.

·Operation of the product with disabled, modified, removed or damaged safety equipment and

devices.

Operation Manual

CTH40/CTDH40/VSCT40

Page|7/28

Rev. C

General safety Information

Read the safety instructions very carefully. All safety precautions must be strictly observed at all times

while using the product described in this manual and any associated instrumentation.

Study this document to learn how to operate your product correctly. Keep this instruction manual in a

safe place close to the described product and inform all other users of the manual’s location. Always

include this manual when handing the product over to third party persons.

Responsible body is the individual or group of persons that are responsible for the proper use and

maintenance of the product, ensuring that the product is operated within its speciﬁcations and

operating limits. The responsible body must ensure that users of the product are adequately trained.

Operators use the product for its intended purpose. Users must be trained in electrical safety, handling

of cryogenic liquids and adequate use of the instrument. They must be protected from electric shock

and other potentially dangerous situations.

Maintenance Personnel perform routine tasks on the product to keep it in proper operating conditions,

i.e. setting up the line voltage or replacing consumables. Maintenance procedures described in this

manual must be followed.

Service Personnel are trained to work on live circuits and to work cryogenic liquids as well as perform

fault ﬁnding measurements and repair work to the product. Only fully trained service personnel

qualified to handle potentially lethal voltages may perform servicing and repair.

Shock hazard: The American National Standards Institute states that a shock hazard exists when voltage

levels are greater than 30 V RMS, 42.2 V peak or 60 VDC. A good safety practice is to assume that

hazardous voltages are present in any unknown circuitry.

Operation Manual

CTH40/CTDH40/VSCT40

Page|8/28

Rev. C

Warning!

Always check for correct mains voltage before connecting any equipment!

Mains supply voltage fluctuation must not exceed ±10% of the nominal voltage.

Warning!

• Always observe and strictly follow the safety notes and regulations given in this document

• Always use the originally delivered cables with the product for all electrical connections.

• Always switch oﬀ the device before disconnecting cables.

• Never operate the device outside its dedicated environment.

• DO NOT OPEN the device unless you fulfill the requirements of a fully trained service

personnel and you are familiar with live circuits and potentially lethal voltages.

Important! Ambient conditions and environment:

This product is only to be used indoors, in locations meeting the following requirements:

• Room temperature lies between 5 C/41 F and 40 C/104 F

• Humidity up to maximum of 80%

• Altitudes up to 2000m

• Pollution Degree 2 environments

Operation Manual

CTH40/CTDH40/VSCT40

Page|9/28

Rev. C

Technical Specifications

CTH40

·Flange type: DN40CF

·Heat exchanger: Aluminum cooling blocks

·Core : OFHC (Copper), stainless steel

·Heating wire: Kanthal ∅0.3 mm

·Max. hEATING current 4.0 A

·Cryogenic liquids Liquid nitrogen only

·Maximum allowed inlet pressure 2.5 bar

·Temperature sensor type Pt100

·Temperature range sensor -200 C – 170 C

·Maximum heating/baking temperature +150 C

Miniature feedthrough

·Pins 6 × ∅1.6 mm

·Test voltage 500 V DC

·Max. voltage for device usage 49 V

·Max. current 5 A

CTDH40

·Flange type: DN40CF

·Heat exchanger: Aluminum cooling blocks

·Core : OFHC (Copper), stainless steel

·Heating wire: Kantal ∅0.3 mm

·Max. heating current 4.0 A

·Cryogenic liquids Liquid nitrogen only

·Maximum allowed inlet pressure 2.5 bar

·Temperature sensor type Pt100

·Temperature range sensor -200 C – 170 C

·Maximum heating/baking temperature +150 C

Miniature feedthrough

·Pins 6 × ∅1.6 mm

·Test voltage 500 V DC

·Max. voltage for device usage 49 V

·Max. current 5 A

·Flange type DN16CF

VSCT40

·Maximum bakeout temperature 150 C

·Leak rate < 5 × 10¯¹⁰ mbar

·Maximum overpressure 0.3 bar (windows)

·Tolerances for chamber:

·Machine parts ISO 2768 -m -K

·Welded parts ±1 mm and±1°

Operation Manual

CTH40/CTDH40/VSCT40

Page|10 /28

Rev. C

Figure 2: Overview / technical drawing of CTDH40/CTH40 with their components.

All measures are in mm. The original drawings can be downloaded from our homepage

in the category UHV suitcase accessories.

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