Bronkhorst 917126 Controlled Evaporator and Mixer Instruction Manual

Bronkhorst 917126 Controlled Evaporator and Mixer

Product Information

Copyright
The illustrations in this document serve to provide general notices regarding correct operation. The illustrations are simplified representations of the actual situation and may differ from the actual product. Bronkhorst High-Tech B.V. reserves the right to modify or improve its products and documentation without notice. Prior to work, check whether a newer version of this document is available on the Bronkhorst website.

Symbols in this document

• Important information. Disregarding this information could increase the risk of damage to the equipment, or the risk of personal injuries.
• Tips, useful information, attention points. This will facilitate the use of the instrument and/or contribute to its optimal performance.
• Additional information is available in the referenced documentation, on the indicated website(s), or from your Bronkhorst representative.

Product Usage Instructions

Receipt of equipment
Upon receiving the product, carefully inspect it for any visible damage or missing components. If any issues are found, contact your Bronkhorst representative for further assistance.

Equipment storage
Store the equipment in a clean and dry environment, away from direct sunlight and extreme temperatures. Ensure that the equipment is protected from any potential physical damage.

Warranty
The product is covered by a warranty. Please refer to the warranty documentation provided for the specific terms and conditions.

General safety precautions

• Consult the instruction manual for handling instructions and safety guidelines.
• During operation, the surface of the equipment may become hot. Take necessary precautions to avoid burns or injuries.
• There are electrical parts inside the equipment. Do not attempt to open or repair the equipment yourself to avoid the risk of electric shock. Contact a qualified technician if repairs are required.

Table of Contents

1. Introduction
2. Scope of this manual
3. Intended use
4. Product Description
5. Product Overview
6. Documentation
7. Model key

Introduction
Scope of this manual
This manual contains general product information, installation and operating instructions, and troubleshooting tips for the Bronkhorst® Controlled Evaporator and Mixer (CEM ).

Intended use
The Bronkhorst® CEM is designed for mass flow control of vapors created from liquid and gas, using the media and operating conditions (e.g. temperature, pressure) as specified at ordering time.  The equipment is suited for general-purpose indoor (dry) applications, like laboratories and machine enclosures.

WARNING :

• The wetted materials incorporated in the Controlled Evaporator and Mixer are compatible with media and conditions (e.g. pressure, temperature) as specified at ordering time. If you are planning to use the product (including any third-party components supplied by Bronkhorst, such as pumps or valves) with other media and/or other conditions, always check the wetted materials (including seals) for compatibility. See the technical specifications of the product and consult third-party documentation (if applicable) to check the incorporated materials.
• Responsibility for the use of the equipment its intended use, suitability for the intended application, cleaning, and compatibility of process media with the applied materials lies solely with the user.
• The user is responsible for taking the necessary safety measures to prevent damage and/or injury while working with the equipment and process media (as described in the associated Material Safety Data Sheets).
• Where appropriate, this document recommends or prescribes safety measures to be taken concerning media usage or working with the described equipment under the specified conditions. However, this does not relieve the user of the aforementioned responsibility, not even if such is not explicitly recommended or prescribed in this document.
• Bronkhorst High-Tech B.V. cannot be held liable for any damage and/or injury resulting from unintended, improper, or unsafe use, or use with other media and/or under other process conditions than specified at ordering time.

Product Description

The CEM comprises a control valve (also called ‘mixing valve’), a mixing chamber, and a heat exchanger (see product overview), to add a liquid to a carrier gas and transform the mix into a vapor.

A complete CEM system is a modular setup with the CEM itself as the core component. To feed it with liquid and gas, the CEM is complemented with a liquid flow meter with a control function (e.g. a mini CORI-FLOW or LIQUI- FLOW) and a gas flow controller (e.g. an EL-FLOW Select). The liquid flow meter uses the mixing valve of the CEM to control the liquid flow rate.

The gas serves as a mixing component and as a means of transport for the vapor, and is therefore also referred to as ‘carrier gas’. The mixing valve atomizes the liquid and adds it to the carrier gas, creating an aerosol, which is heated by the CEM until it transforms into a vapor. To monitor the internal temperature of the heat exchanger, the CEM incorporates a PT100 temperature sensor. An internal safety switch prevents overheating of the heat exchanger, by interrupting the control signal as soon as the temperature exceeds 200 °C.

To control the liquid and gas supply flows and the CEM temperature, Bronkhorst offers an E-8000 readout and control unit. This module contains a temperature controller for the heat exchanger and provides a user interface to operate the instrumentation. The E-8000 module also serves as a power supply unit and can be optionally equipped with a field bus interface for the CEM.

Product Overview

W-10x / W-20x

1. Control valve
2. Mixing chamber
3. Liquid inlet
4. Heat exchanger
5. Bleed outlet
6. Control valve actuator connector
7. Gas inlet
8. Power and signal connector
   • Signal
   • Power
9. Vapor outlet

W-30x

Documentation
The CEM comes with all the necessary documentation for basic operation and maintenance. Some parts of this manual refer to other documents, which can be downloaded from the Bronkhorst website.  In addition to the CEM itself, a complete CEM system comprises other instruments and peripherals, which are not described in this manual. Consult the according manuals for installation and operation instructions.

The documentation listed in the following table is available on the CEM product pages under www.bronkhorst.com/products

9.17.126
Instruction manual E-8000| 9.17.076
Hook-up diagrams| Hook-up diagram CEM W101A-W102A-W202A| 9.16.086
Hook-up diagram CEM W303B 120V| 9.16.116
Hook-up diagram CEM W303B 230V| 9.16.115
Dimensional drawings| Dimensional drawing W-101A| 7.05.585
Dimensional drawing W-102A-W202A| 7.05.574
Dimensional drawing W-303B 115V-230V| 7.05.902

The documentation listed in the following table can be downloaded from www.bronkhorst.com/downloads

Model key
The model key on the serial number label contains information about the technical properties of the instrument as ordered. The actual properties of your instrument can be retrieved with the diagram below.

**Installation

**

Functional properties Before installing the CEM, check the serial number label to see if the functional properties match your requirements

• Instrument type (technical properties; see Model key)
• Flow rates (gas and liquid)
• Media to be used in the instrument
• Power supply

Test pressure
Bronkhorst® instruments are pressure tested to at least 1.5 times the specified operating pressure and outboard leak tested to at least 2 * 10-9 mbar l/s Helium.

WARNING:

• The test pressure is stated on a red label on the device; if this label is missing or if the test pressure is insufficient, the device must not be used and should be returned to the factory.
• Before installation, make sure that the pressure rating is within the limits of the normal process conditions and that the tested pressure is by the safety factor of your application.
• Disassembling and/or replacing fluid system-related parts of the device will invalidate the test pressure and leak test specification

Mounting
The CEM must be mounted vertically, with the control valve on top and the vapor outlet pointing down (as shown in the product overview). For optimal performance, please observe the following:

• Use the mounting holes on the rear to attach the CEM to a rigid and stable construction. Check the dimensional drawing for the exact positions and size of the mounting holes
• Avoid installation nearby to mechanical vibration and/or heat sources.

Electrical connection
Electrical connections must be made with standard cables or according to the applicable hook-up diagrams. Make sure that the power supply is suitable for the power ratings as indicated on the serial number label or in the technical specifications of the instrument, and that double or reinforced insulation is used for the power supply.

WARNING: To be able to comply with all applicable guidelines and regulations, electrical connections must be made by or under the supervision of a qualified electrician

• The equipment described in this document contains electronic components that are susceptible to electrostatic discharge.
• When working on the electrical installation, take appropriate measures to prevent damage as a result of electrostatic discharge.

The CE mark on the equipment indicates that it complies with requirements imposed by the European Union, including electromagnetic compatibility (EMC).

WARNING: EMC can only be guaranteed by applying appropriate cables and connectors or gland assemblies:

•  Cable wire diameters must be sufficient to carry the supply current and minimize voltage loss.
• When connecting the product to other devices, ensure that the integrity of the shielding remains uncompromised; use shielded cables and connectors where possible and/or required.
• Preferably use the supplied cables (if applicable) to make electrical (signal) connections to and between the supplied components. These cables are shielded, have the required wire diameter, and loose ends (if applicable) are marked to facilitate correct connection.

If not all requirements for proper shielding can be met (for example, because a component is not equipped with shielded connectors), take the following measures to ensure the best possible shielding:

• Keep cable lengths at a minimum.
• Route cables as closely as possible alongside metal structures or components.
• Ensure all electrical components are grounded to the earth.

When in doubt about the shielding of your cabling and/or electrical connections, contact your Bronkhorst representative.

Caution: When using the CEM without a Bronkhorst® readout and control unit (E-8000), observe the following guidelines:

• The heat exchanger is not suitable for constant AC power supply
• The heat exchanger should be incorporated into a temperature control circuit
• The CEM does not contain a fuse. Consult the hook-up diagram for the recommended fuse type to be used for the temperature control circuit
• The safety switch inside the heat exchanger is not part of the AC power supply circuit

WARNING: The recommended maximum cable length between the CEM and the control unit is 5 m. The internal electrical resistance of the cable causes a deviation of the readout signal of the temperature sensor of the CEM (approximately 0.1 °C/m).

System assembly

Assembly tips Tubing length
Because of the low flow rates in the CEM system, filling (and refreshing) the internal volume of the tubing can take a fair amount of time. It will also take some time for the vapor flow to stabilize after flow setpoints are changed (response delay). Fill time and response delay are affected mainly by the length and inside diameter of the tubing and the supported flow ranges of the flow meters/controllers. By minimizing tubing lengths between the flow meters/controllers and the CEM, the filling/response time can be kept as short as possible. It can also reduce the impact of external disturbances (temperature, pressure, and vibrations).

Tubing diameter and flexibility
Use tubing with a minimal diameter that still supports the required media flow; this will help keep the filling and refreshing time of the fluid lines as short as possible. Preferably use hard tubing (as opposed to flexible), to prevent internal volume changes and reduce the impact of ambient pressure fluctuations.

Insulation
Applying insulation material on the liquid and gas tubing can minimize the influence of ambient temperature gradients on the supply side of the CEM. Alternatively, mount the entire system in a thermal enclosure to minimize temperature influences from the environment.

Heat tracing
The ambient conditions or adding extra gases to the vapor after the CEM outlet can cause the vapor to condense before it reaches the process. To prevent this, apply heat tracing tape or use heated tubing.

Basic assembly

• Connect the outlet of the liquid flow meter to the liquid inlet of the CEM (mind the FLOW arrow on the instrument base)
• Connect the outlet of the gas flow controller to the gas inlet of the CEM (mind the FLOW arrow on the instrument base)
• Connect the vapor outlet directly to the process/reactor/chamber
• Connect an actuator cable from the liquid flow meter to the mixing valve (refer to the hook-up diagrams of the flow meter and the CEM to connect the required signals)

WARNING:

• Check the fluid system for leaks before applying full process pressure, especially if toxic, explosive, or other dangerous fluids are used
• Do not apply pressure until all required electrical connections are made

Working under vacuum
Depending on the used media and ambient conditions (temperature and pressure), draining and purging under vacuum can shorten the time that is needed to have all components of the fluid system clean and dry. For draining and purging under vacuum, extending the fluid system with some additional tubing and valves is strongly recommended. This will facilitate easy and flexible deployment of the vacuum process, without sacrificing the accuracy and reliability of the instrumentation of the CEM system.

WARNING:

• To prevent leakage from the main fluid path and the process to the vacuum lines, the vacuum lines should be separated from the main line with leakproof shut-off valves
• Additional components needed to enable vacuuming of the system may also require additional steps to be taken when performing operational procedures (bleeding, purging, starting vapor production, stopping vapor production)
• If necessary, contact your Bronkhorst representative for more information and assistance

Fluid supply
The recommendations in this section will help reduce the risks of clogging and improve vapor flow stability.

Carrier gas

• The carrier gas must be clean and dry. Impurities or particles in the gas can cause unwanted chemical reactions with the liquid and/or clogging of the fluid system.
• If the presence of particles in your process media cannot be ruled out, installing a particle filter in the carrier gas supply line (upstream from the flow controller) is strongly recommended.
• If necessary, install a de-humidifier in the carrier gas supply line (upstream from eventual filters). Humidity in the carrier gas can cause chemical reactions in the mixing valve in combination with certain liquids.

Purging the fluid system before each use will reduce the presence of contaminants and remove moisture from the gas lines. See Puring for instructions.

Liquid purity

• If the presence of particles in your process media cannot be ruled out, installing a particle filter in the liquid supply line (upstream from the flow controller) is strongly recommended.
• Select a suitable filter size, to minimize the pressure drop, to prevent a degassing effect and instability of the liquid supply.
• For hydrophobic liquids use a hydrophobic filter.
• Note that a filter will not stop dissolved matter like minerals and chemical stabilizers

Minimizing gas dissolution
Typically, the CEM will be supplied with liquid from a pressurized container. However, pressurizing a liquid with a gas makes a portion of the gas dissolve in the liquid. The higher the gas pressure, the more gas will be dissolved in the liquid (Henry’s Law: the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid). When the temperature rises or the pressure drops further down the line, the gas will come out of solution and form bubbles in the liquid, which makes it unstable.

Gas entrapment by dissolution can be minimized by taking one of the following measures:

• Use a container or vessel with a membrane to pressurize the liquid; the membrane separates the gas from the liquid, so it cannot dissolve.
• Use a pump to feed the liquid. Note, however, that some pumps have a large internal volume, which lengthens the start-up time of the system. Also, some pump types (e.g. gear pumps) can cause cavitation, which introduces gas bubbles, exactly what was to be prevented.

If direct pressurization of the liquid with gas is inevitable, these measures can keep gas dissolution to a minimum:

• Use a gas with a low solubility to pressurize the liquid (for instance Helium)
• Keep the gas pressure on the liquid as low as possible
• Relieve the gas pressure from the liquid when the CEM system is not in use

Liquid vessel size
The liquid vessel should be large enough to provide a stable flow for a sufficient amount of time between refills. Purging or flushing the fluid system can consume a relatively large amount of liquid; take this into account when selecting a suitable vessel size. The table below gives an indication of the liquid consumption, based on different flow rates:

Media compatibility
The wetted parts of the CEM are made of SS316 (heater) and SS304 (mixing valve). The standard sealing material for the mixing valve is Kalrez®, which is compatible with a wide range of chemicals.

WARNING: Before deploying the CEM with any other media than specified at ordering time, be sure that the media are compatible with the wetted materials and sealing material. Accumulation of corrosion matter on the tubing interior can easily destabilize the flow, especially with (extremely) low flows.

Operation

WARNING: In systems for use with corrosive or reactive media, purging for at least 30 minutes with a dry, inert gas (like Nitrogen or Argon) is necessary before use. After use with corrosive, reactive, or hazardous media (e.g. toxic or flammable), purging is also necessary before the fluid system is exposed to air.

See section purring for general purging instructions. After correct installation and taking all necessary safety precautions, the CEM is ready to be used.

Powering up

• It is recommended to turn on power before applying pressure and to switch off power after removing pressure
• Follow the guidelines in the manuals for the flow meters/controllers about warming up

When applying pressure, avoid pressure shocks and bring the fluid system gradually up to the level of operating conditions; open and close the fluid supply gently. After powering up, the control valve will act according to the last known setpoint. When the setpoint is 0, this means the valve closes (normally open) or stays closed (normally closed). The valve stays closed until the instrument receives a new valid setpoint from the active setpoint source.

Required setpoints
The required setpoints for the carrier gas and liquid flows and the temperature of the heat exchanger can be obtained from FLUIDAT® on the Net, using the flow rates of the used instruments. FLUIDAT® on the Net can be accessed via www.fluidat.com. Free registration on the FLUIDAT® website gives access to all available fluids and functionality. The temperature setpoint that FLUIDAT® calculates for the CEM ensures that the heater will evaporate the liquid and that the vapor temperature at the outlet will still be high enough to prevent condensation. As a result, the required temperature setpoint will almost always be higher than the required evaporation temperature. Further down the line, however, tubing length, process, and ambient conditions can cause the vapor temperature to drop to a point where condensation might occur. See the section assembly tips on how to prevent this

Starting vapour production

WARNING:

• To prevent liquid from flowing into the gas flow controller, make sure that the liquid pressure is never higher than the gas pressure
• Always make sure to have a gas flow, before feeding the CEM with liquid. Follow the instructions in the exact order as mentioned below:

1. Set the setpoints of both flow controllers to 0%
2. Enter the required temperature setpoint for the heat exchanger
3. Pressurize the liquid and gas supply lines to the required values
4. Bleed the mixing valve
5. Change the gas flow setpoint to the required value (this may be done while the heat exchanger is warming up)
6. Wait until
   • The carrier gas flow has stabilized and
   • The temperature of the heat exchanger has reached its setpoint
7. Start adding liquid to the carrier gas flow, by gradually increasing the liquid flow setpoint to the required value

Stopping vapour production
Do not switch off the heat exchanger before stopping the liquid flow; a too-low temperature in the heat exchanger can prevent the liquid from vaporizing, which might choke its fluid line. To stop the vapor flow, follow the instructions below:

1. Change the liquid flow setpoint to 0%
2. Change the CEM temperature setpoint to 0 °C
3. Change the carrier gas flow setpoint to 0%

Bleeding mixing valve

• To ensure stable and reliable control behavior, the liquid tubing and dead space of the mixing valve should be kept free of gas, by bleeding the mixing valve from time to time
• Bleeding is recommended on the following occasions:
  • Before the first use of the CEM system
  • When restarting the system after purging
  • periodically, to remove accumulated gas (if any) from the liquid tubing and mixing valve
• If possible, prevent accumulation of gas bubbles in the liquid tubing during operation (see minimizing gas ) Install a shut-off valve as close to the bleed outlet as possible and connect a clear transparent tube to the valve outlet; being able to see gas bubbles in the liquid will ease monitoring the progress of the bleeding procedure
• Make sure to connect the bleed outlet to an appropriate draining facility, especially if the system is used to vaporize dangerous liquids.
• Take appropriate safety measures, as described in the Material Safety Data Sheet(s) of the media to be processed (if applicable).

To bleed the mixing valve, follow this procedure:

1. Change the liquid flow setpoint to 0% (this closes the mixing valve)
2. Pressurize the liquid inlet
3. Open the bleed outlet (slowly) until liquid starts to escape
4. Optionally, tap the valve assembly and/or liquid inlet of the mixing valve to let gas bubbles accumulate and migrate to the mixing valve
5. Close the bleed outlet as soon as all gas has escaped through the mixing valve

Purging
Purging the fluid lines of the CEM system is sometimes necessary, to prevent clogging of the tubing and instrumentation or (cross) contamination of process media. Purging the entire fluid system is advised on the following occasions:

• before changing fluid types
• before and after using corrosive, reactive, or flammable media
• before and after a shutdown period of more than one week
• every 3 months

WARNING: Always use a dry, inert gas (like Nitrogen or Argon) to purge the fluid system.

CAUTION : The purge times mentioned in the instructions below are rough indications; depending on the media properties (density, viscosity, volatility, etc.), longer or shorter times might be recommendable.

Step 1: Preparation

• Set all setpoints to 0% (liquid flow, carrier gas flow, CEM temperature)
• Connect a purging gas supply facility to the inlets of both flow controllers (liquid and gas)
• Pressurise the purging gas supply line

Step 2: Gas tubing

• Change the carrier gas flow setpoint to 100%
• Purge for at least 30 minutes

Step 3: Mixing valve

• Change the carrier gas flow setpoint to 50% (this will help prevent liquid from flowing into the gas tubing and gas flow controller)
• Open the bleed outlet on top of the mixing valve (because the liquid setpoint is 0%, the remaining liquid and purging gas leave the system through the bleed outlet)
• Purge for 10 to15 minutes
• Close the bleed outlet

Step 4: Liquid tubing

• Change the liquid flow setpoint to 100%
• Purge for at least 30 minutes

Step 5: Finishing

• Set the carrier gas flow setpoint to 0%
• De-pressurize the purging gas supply line
• Set the liquid flow setpoint to 0%

Digital parameters
Using an E-8000 control module, the heating element of the CEM can be operated digitally via RS-232 or Fieldbus. This section describes the parameters that are used to monitor and control the heating element. Consult the E-8000 manual for installation information and a description of the user interface

WARNING: Consult the E-8000 manual for installation information and a description of the user interface

Measure

This parameter indicates the temperature measured by the CEM. The value range corresponds to 0…200 °C (the supported temperature range of the CEM control module).

Setpoint

This parameter sets the required temperature of the heater. Like Measure, its value range corresponds to 0…200 °C. Note that the heater has no cooling functionality; a setpoint evaluating a lower temperature than the actual heater temperature effectively switches the heater off.

F-measure

**** Fmeasure returns the measured temperature in °C.

Fsetpoint

**** Fsetpoint sets the required temperature of the heater in °C. Note that the heater has no cooling functionality; a setpoint lower than the actual heater temperature effectively switches the heater off.

Capacity

This parameter returns the maximum readout and control value (100%), expressed in units corresponding to the parameter Capacity Unit. For the CEM control module, this parameter is fixed to 200 (°C); it might come in handy when scaling the value of parameter Measure (1 °C = 32000/200).

Capacity Unit

This parameter returns the capacity unit in which Fmeasure and Fsetpoint are expressed. For the CEM control module, this parameter is fixed to °C.

Maintenance

No regular maintenance is required if the CEM is operated properly, with clean media, compatible with the wetted materials, avoiding pressure and thermal shocks and vibrations. Units may be purged with a clean, dry, and inert gas. In case of severe contamination, cleaning the inside of the device may be necessary, by flushing the conduits with an appropriate cleaning fluid.

WARNING: Inexpertly servicing instruments can lead to serious personal injury and/or damage to the instrument or the system it is used. Servicing must therefore be performed by trained and qualified personnel. Contact your Bronkhorst representative for information about cleaning and calibration. Bronkhorst has trained staff available.

Troubleshooting and service

For a correct analysis of the proper operation of an instrument, it is recommended to disconnect the unit from the process line and check it without applying fluid supply pressure. In case the unit is dirty or clogged, this can be ascertained immediately by loosening the fittings and performing a visual inspection. Energizing and de-energizing the instrument can indicate if there is an electronic failure. After energizing, control behavior can be checked by entering a temperature setpoint.

WARNING: If you suspect leakage, do not disassemble the instrument for inspection, but contact your local distributor for service or repairs.

Common issues

. Check cable connection

. Check cable hook-up

Other| Reset instrument(s) and/or restart readout/control unit. If the problem persists, contact your Bronkhorst representative
Vapour too dry| Carrier gas flow too high| Decrease carrier gas flow
Liquid flow too low| Increase liquid flow
Condensation at vapor outlet| Temperature setpoint too low| Increase temperature setpoint
Carrier gas flow too low| Increase carrier gas flow
Liquid flow too high| Decrease liquid flow
The heater not warming up| Fuse blown| Replace fuse
Temperature sensor defective| Contact your Bronkhorst representative
Heater defective| Contact your Bronkhorst representative
Vapor flow unstable| Pressure fluctuations on fluid inlets| Eliminate pressure fluctuations, e.g. by installing a pressure regulator
Temperature setpoint (much) too high| Decrease temperature setpoint
Gas inclusion in the tubing| Flush liquid lines with processing liquid at a high flow rate
Clogging in a fluid system| Solid particles in process media| Install filters at media inlets
Dissolved substances do not evaporate, but remain as solid particles| . Apply higher purity liquid (no dissolved

substances)

. Increase cleaning cycle frequency

Liquid burn-in caused by overheating| Apply lower temperature setpoint
Solid particles formed by chemical reaction| . Apply dry and inert carrier gas

. Evacuate the fluid system before operation

The fluid system was not clean and dry before the operation| Clean and purge fluid system before and after operation and before change of process media

Service
If you have a question about a product or if you find the product does not meet the specifications as ordered, do not hesitate to contact your Bronkhorst representative. To enable us to help you quickly and effectively, make sure to have the serial number (SN) ready whenever seeking contact with your Bronkhorst representative about a specific item

For current information about Bronkhorst® and worldwide service addresses, please visit our website:
www.bronkhorst.com
Do you have any questions about our products? Our Sales department will gladly assist you in selecting the right product for your application. Contact sales by e-mail:

sales@bronkhorst.com
For after-sales questions, help, and guidance, our Customer Care department is available by e-mail:

aftersales@bronkhorst.com
No matter the time zone, our experts within the Customer Care department are available to answer your request immediately or take appropriate further action. Our experts can be reached at

+31 859 02 18 66
Bronkhorst High-Tech B.V. Nijverheidsstraat 1A NL-7261 AK Ruurlo The Netherlands

Returns
Removal and return instructions
When returning materials, always clearly describe the problem, and, if possible, the work to be done, in a cover letter.

Instrument handling:

1. Purge all fluid lines (if applicable)
2. If the instrument has been used with toxic or otherwise hazardous fluids, it must be cleaned before shipping
3. Disconnect all external cabling and tubing and remove the instrument from the process line
4. If applicable, secure movable parts with appropriate transport safety materials, to prevent damage during transportation
5. The instrument must be at ambient temperature before packaging
6. Insert the instrument into a plastic bag and seal the bag
7. Place the bag in an appropriate shipping container; if possible, use the original packaging box

Add documentation:

• Reason of return
• Failure symptoms
• Contaminated condition
• Declaration on decontamination

It is required to notify the factory if toxic or dangerous fluids have been in contact with the device! This is to enable the factory to take sufficient precautionary measures to safeguard the staff in their repair department. All instruments must be dispatched with a filled-in ‘Declaration on decontamination’. Instruments without this declaration will not be accepted. A safety information document containing a ‘Declaration on decontamination’ form (document no 9.17.032) can be downloaded from the Service & Support section of the Bronkhorst website (www.bronkhorst.com).

Important: Note, on top of the package, the customs clearance number of Bronkhorst High-Tech B.V.: NL801989978B01 (only if applicable, otherwise contact your Bronkhorst representative for local arrangements.)

Disposal (end of lifetime)
If you are a customer within the European Union and wish to dispose of Bronkhorst® equipment bearing the symbol of a crossed-out waste disposal bin, you can return it by the removal and return instructions. Bronkhorst will then take care of proper dismantling, recycling, and/or reuse (wherever possible). In the cover letter, mention that you are returning the product for disposal. In countries outside the EU, disposal of electrical and electronic equipment (EEE) may be subject to local or national directives and/or legislation. If applicable, consult local or national authorities to learn how to handle EEE properly in your area.

Instruction Manual Controlled Evaporator and Mixer

References

• Your specialist for Low Flow solutions | Bronkhorst
• Downloads | Bronkhorst
• About us | Bronkhorst
• Gas Flow | Liquid Flow | Vapour Flow | Solutions | Bronkhorst
• FLUIDAT® on the Net, mass flow and physical properties calculations
• Your specialist for Low Flow solutions | Bronkhorst
• About us | Bronkhorst

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