Buchi Inert Loop S-395 Manual
Buchi Inert Loop S-395 is an inert gas recirculation system designed to maintain an inert atmosphere inside a closed reaction vessel. Its primary function is to remove oxygen from a reaction vessel by continuously circulating inert gas through the system. By reducing the oxygen concentration, the Inert Loop S-395 helps prevent oxidation reactions and creates a more controlled environment for chemical reactions.
Furthermore, the Inert Loop S-395 can be used in various applications, including:
- Inert gas blanketing: Maintaining an inert atmosphere in a reaction vessel to prevent oxygen ingress.
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Inert Loop S-395
Operation Manual
Imprint
Product Identification:
Operation Manual (Original) Inert Loop S-395
11594358
Publication date: 08.2022
Version A
BÜCHI Labortechnik AG
Meierseggstrasse 40
Postfach
CH-9230 Flawil 1
E-Mail: [email protected]
BUCHI reserves the right to make changes to the manual as deemed necessary in the light of experience, especially with respect to structure, illustrations and technical details.
This manual is copyrighted. Information from it may neither be reproduced, distributed, or used for competitive purposes, nor made available to third parties. The manufacture of any component with the aid of this manual without prior written agreement is also prohibited.
Büchi Labortechnik AG Table of contents
Table of contents
Operation Manual Inert Loop S-395 iii
Table of contents Büchi Labortechnik AG
iv Operation Manual Inert Loop S-395
Büchi Labortechnik AG
1
1.1
1.2
1.3
About this document | 1
About this document
This operation manual is applicable for all variants of the instrument.
Read this operation manual before operating the instrument and follow the instructions to ensure safe and trouble-free operation.
Keep this operation manual for later use and pass it on to any subsequent user or owner.
BÜCHI Labortechnik AG accepts no liability for damage, faults and malfunctions resulting from not following this operation manual.
If you have any questions after reading this operation manual: u
Contact BÜCHI Labortechnik AG Customer Service.
https://www.buchi.com/contact
Mark-ups and symbols
NOTE
This symbol draws attention to useful and important information.
R This character draws attention to a requirement that must be met before the instructions below are carried out.
u
This character indicates an instruction that must be carried out by the user.
ð This character indicates the result of a correctly carried out instruction.
Mark-up
Window
Explanation
Software Windows are marked-up like this.
Tab
Tabs are marked-up like this.
Dialogs are marked-up like this.
Dialog
[Button]
[Field names]
[Menu / Menu item]
Status
Signal
Buttons are marked-up like this.
Field names are marked-up like this.
Menus or menu items are marked-up like this.
Status is marked-up like this.
Signals are marked-up like this.
Connected instruments
In addition to this operation manual, follow the instructions and specifications in the documentation for the connected instruments.
Trademarks
Product names and registered or unregistered trademarks that are used in this document are used only for identification and remain the property of the owner in each case.
Operation Manual Inert Loop S-395 5/34
2 | Safety
2
2.1
2.2
2.3
Büchi Labortechnik AG
Safety
Proper use
The instrument is designed and built for laboratories.
The instrument can be used for the following tasks:
Condense organic solvent from the drying gas from BUCHI spray dryer.
Use other than that intended
The use of the instrument other than described in proper use and specified in technical data is use other than that intended.
The operator is responsible for damages or hazards that are caused by use other than that intended.
Specially the following uses are not permitted:
Use of the instrument in areas which require explosion-safe instruments.
Use the instrument with non-BUCHI instruments.
Use of the instrument for processing substances outside of research and development.
Use of the instrument with gases with unknown chemical composition.
Use of the instrument with samples containing peroxides.
Use of the instrument with samples that can form peroxides.
Use of the instrument with samples which produce oxygen during the processing.
Use of the instrument with toxic substances without appropriate safety measures.
Use of the instrument with biohazardous materials such as viruses or bacteria.
Use of the instrument with substances which might explode or ignite because of the processing.
Use of the instrument with corrosive samples.
Staff qualification
Unqualified persons are unable to identify risks and are therefore exposed to greater dangers.
The instrument may only be operated by suitably qualified laboratory staff.
These operating instructions are aimed at the following target groups:
Users
Users are persons that meet the following criteria:
They have been instructed in the use of the instrument.
They are familiar with the contents of these operating instructions and the applicable safety regulations and apply them.
They are able on the basis of their training or professional experience to assess the risks associated with the use of the instrument.
6/34 Operation Manual Inert Loop S-395
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2.4
2.5
2.6
Safety | 2
Operator
The operator (generally the laboratory manager) is responsible for the following aspects:
The instrument must be correctly installed, commissioned, operated and serviced.
Only suitably qualified staff may be assigned the task of performing the operations described in these operating instructions.
The staff must comply with the local applicable requirements and regulations for safe and hazard-conscious working practices.
Safety-related incidents that occur while using the instrument should be reported to the manufacturer ([email protected]).
BUCHI service technicians
Service technicians authorized by BUCHI have attended special training courses and are authorized by BÜCHI Labortechnik AG to carry out special servicing and repair measures.
Personal protective equipment
Depending on the application, hazards due to heat and/or corrosive chemicals may arise.
u
Always wear appropriate personal protective equipment such as safety goggles, protective clothing and gloves.
u
Make sure that the personal protective equipment meets the requirements of the safety data sheets for all chemicals used.
Warning notices in this document
Warning notices warn you of dangers that can occur when handling the instrument.
There are four danger levels, each identifiable by the signal word used.
Signal word
DANGER
WARNING
CAUTION
NOTICE
Meaning
Indicates a danger with a high level of risk which could result in death or serious injury if not prevented.
Indicates a danger with a medium level of risk which could result in death or serious injury if not prevented.
Indicates a danger with a low level of risk which could result in minor or medium-severity injury if not prevented.
Indicates a danger that could result in damage to property.
Residual risks
The instrument has been developed and manufactured using the latest technological advances. Nevertheless, risks to persons, property or the environment can arise if the instrument is used incorrectly.
Appropriate warnings in this manual serve to alert the user to these residual dangers.
Operation Manual Inert Loop S-395 7/34
2 | Safety Büchi Labortechnik AG
2.6.1
Faults during operation
If an instrument is damaged, sharp edges, glass splinters, moving parts or exposed electrical wires can cause injuries.
u u u
Regularly check instruments for visible damage.
If faults occur, switch off the instrument immediately, unplug the power cord and inform the operator.
Do not continue to use instruments that are damaged.
2.6.2
Glass breakage
WARNING
In the rare case of an abrupt massive leakage like a glass breakage a deflagration can happen.
Risk of injury from flying glass splinters.
u u u u
Leave the instrument immediately.
Stay in a safe distance for 1 minute.
Do not switch off or unplug the instrument.
Wait until the instrument changed independently into a safe state to get back.
2.7
2.8
Modifications
Unauthorized modifications can affect safety and lead to accidents.
u
Use only genuine BUCHI accessories, spare parts and consumables.
u u
Carry out technical changes only with prior written approval from BUCHI.
Only allow changes to be made by BUCHI service technicians.
BUCHI accepts no liability for damage, faults and malfunctions resulting from unauthorized modifications.
Oxygen sensor
The instrument is equipped with an oxygen measurement sensor to ensure a safe operation when spraying combustible solvent. The inertization of the instrument is continuously monitored. In case of an oxygen concentration above 6% the instrument is able to immediately stop the solvent spraying. A safe state will be reached with a maximum time delay of 15 to 25s. The actual time delay depends on the drying gas flow rate.
The used sensor is SIL capable.
8/34 Operation Manual Inert Loop S-395
Büchi Labortechnik AG
3
3.1
Product description | 3
Product description
Description of function
The instrument is an accessory for BUCHI Spray Drying Instruments. It enables the safe use of organic solvents in closed loop mode.
The spray drying process in closed loop mode generates an inert gas stream loaded with solvent vapors. The instrument is used to condense these solvent vapors from the gas stream and to monitor its oxygen concentration.
The gas flow enters the instrument and passes the pre-heat exchanger where it is cooled before entering the condenser. After solvent vapor condensation, the gas stream is reheated by the pre-heater before being returned to the spray drying process. The excess inert gas leaves the instrument via the exhaust and the condensed solvent vapors are collected in a closed bottle.
The following spray drying modes are available:
Solvent composition between 90 % - 100 % organic solvent
Spray drying mode
Closed mode with Inert Loop
(When using Ultrasonic Package accessory inert gas adapter is necessary)
Closed mode with Inert Loop and Dehumidifier
(When using Ultrasonic Package accessory inert gas adapter is necessary) between 20 % - 80 % organic solvent
Operation Manual Inert Loop S-395 9/34
3 | Product description
3.2
Configuration
3.2.1
Front view
1 2
Büchi Labortechnik AG
3
4
5
6
9
Fig. 1: Front view
1 Control elements
(See Control elements)
3 Communication cable
8
5 Process gas out
(marked: OUT )
7 Ventilation area
9 Castor wheels
7
2 Oxygen analyzer
(Front cover oxygen analyzer)
4 Exhaust connection
(marked: Exhaust )
6 Process gas in
(marked: IN )
8 Solvent receiving vessel
10/34 Operation Manual Inert Loop S-395
Büchi Labortechnik AG
3.2.2
Rear view
Product description | 3
1 2
3
Fig. 2: Rear view
1 Type plate
3 Fuses
5 Ventilation area
3.2.3
Control elements
1
5
2 Power connection
4 Ventilation area
2 3 4 5
4
9 8 7 6
Fig. 3: Control elements
1 Display
3 Switch on
5 Signal lamp pressure
7 Signal lamp operation
9 Set temperature down
2 Set temperature up
4 Signal lamp power
6 Signal lamp oxygen
8 Switch off
3.2.4
Type plate
The type plate identifies the instrument. The type plate is located at the rear side of the instrument. See Side connections
Operation Manual Inert Loop S-395 11/34
3 | Product description Büchi Labortechnik AG
7
8
9
10
11
1
4
5
2
3
6
14
Made in Germany
Büch Labortechnik AG
Meierseggstrasse 40 CH - 9230 Flawil / Switzerland
13
3.3
12
Fig. 4: Type plate
1 Instrument name
3 Article number
5 Global warming potential
2 Serial number
4 Refrigerant details
Filling capacity
6 Input voltage range
Frequency
8 Fuse type
10 Low-pressure system design pressure
7 Power consumption maximum
9 High-pressure system design pressure
11 Year of manufacture
13 Approvals
12 Company name and address
14 Symbol for "Do not dispose of as household waste"
Scope of delivery
NOTE
The scope of delivery depends of the configuration of the purchase order.
Accessories are delivered as per the purchase order, order confirmation, and delivery note.
3.4
Technical data
3.4.1
Inert Loop S-395
Specification Inert Loop
S-395
200 V
Dimensions
(W x D x H)
50 Hz
705 x 660 x
687 mm
Inert Loop
S-395
230 V
50 Hz
705 x 660 x
687 mm
Inert Loop
S-395
200 V
60 Hz
705 x 660 x
687 mm
Inert Loop
S-395
240 V
60 Hz
705 x 660 x
687 mm
Inert Loop
S-395
220 V
60 Hz
705 x 660 x
687 mm
12/34 Operation Manual Inert Loop S-395
Büchi Labortechnik AG Product description | 3
Specification Inert Loop
S-395
200 V
Inert Loop
S-395
230 V
Inert Loop
S-395
200 V
Inert Loop
S-395
240 V
Inert Loop
S-395
220 V
50 Hz 50 Hz 60 Hz 60 Hz 60 Hz
Weight
Power consumption
96.7 kg max. 1700
VA
Frequency 50 Hz
Connection voltage
91 kg max. 1700
VA
50 Hz
96.7 kg max. 2000
VA
60 Hz
96.7 kg max. 2000
VA
60 Hz
91 kg max. 2000
VA
60 Hz
200 V ± 10 % 230 V ± 10 % 200 V ± 10 % 240 V ± 10 % 220 V ± 10 %
Primary fuse 10 A
Secondary fuse
IP Code
Overvoltage category
10 A
IP20
II
-
10 A
IP20
II
14 A
12 A
IP20
II
14 A
12 A
IP20
II
-
12 A
IP20
II
Pollution degree
II
I Protection degree
Rate of cooling*
800 W at 0
°C
Refrigerant R449A
CO-equivalent
1.369 t
I
II
800 W at 0
°C
R449A
1.369 t
I
II
920 W at 0
°C
R449A
1.369 t
I
II
920 W at 0
°C
R449A
1.369 t
I
II
920 W at 0
°C
R449A
1.369 t
Filling amount of refrigerant
0.98 kg 0.98 kg 0.98 kg 0.98 kg 0.98 kg
Safety Group
Refrigerants
(ASHRAE)
A1 (lower toxicity, no flame propagation)
A1 (lower toxicity, no flame propagation)
A1 (lower toxicity, no flame propagation)
A1 (lower toxicity, no flame propagation)
A1 (lower toxicity, no flame propagation)
22 bar 22 bar 22 bar 22 bar Maximum allowable pressure (PS)
22 bar
[Low pressure side]
Maximum allowable pressure (PS)
[High pressure side]
26 bar 26 bar 26 bar 26 bar 26 bar
Operation Manual Inert Loop S-395 13/34
3 | Product description Büchi Labortechnik AG
Specification Inert Loop
S-395
200 V
50 Hz
Min. process gas temperature
-30 °C
Max. process gas temperature
8 °C
Minimum clearance on all sides
300 mm
Inert Loop
S-395
230 V
50 Hz
-30 °C
8 °C
300 mm
Inert Loop
S-395
200 V
60 Hz
-30 °C
8 °C
300 mm
Inert Loop
S-395
240 V
60 Hz
-30 °C
8 °C
300 mm
*The max. cooling capacity is only guaranteed up to 5% undervoltage.
Inert Loop
S-395
220 V
60 Hz
-30 °C
8 °C
300 mm
3.4.2
Ambient conditions
For indoor use only.
Max. altitude above sea level
Ambient temperature
Maximum relative humidity
Storage temperature
2000 m
5‒35 °C
80 % for temperatures up to 31 °C decreasing linearly to 50 % relative humidity at 35 °C max. 40 °C
3.4.3
Materials
Component Materials of construction
Hose connections, tubing, weld-on nipple Stainless steel 1.4571
Pre-heat exchanger, condensate separator
Stainless steel 1.4301
Plate heat exchanger Stainless steel 1.4401
Screw connections, Ball valve
Sealing ball valve
Stainless steel 1.4408
PTFE
Pipe elbow
Pressure switch
Oxygen sensor
Black hoses
Stainless steel 1.4307
PVDF, Viton, NBR/aramid fiber composite
PA, PPS, PTFE, stainless steel
EPDM
Drain tube
Woulff bottle
Plate heat exchanger
PVC
Glass
Stainless steel solder
14/34 Operation Manual Inert Loop S-395
Büchi Labortechnik AG Product description | 3
3.4.4
Installation site
The installation site meets the safety requirements. See Chapter 2 "Safety", page 6
The installation site has a firm, level and nonslip surface.
The installation site has no obstacles (e.g. water taps, drains, etc.).
The installation site has an own mains outlet socket for the instrument.
The installation site is not exposed to external thermal loads, such as direct solar radiation.
The installation site has enough space that cables / tubes can be routed safely.
The installation site meets the requirements for the connected devices. See related documentation
The installation site meets the specifications according to the technical data (e.g.
weight, dimension, etc.). See Chapter 3.4 "Technical data", page 12
The installation site allows that the power supply can be disconnected at any time in an emergency.
The installation site fits basic electromagnetic environment / Emission Class B.
Make sure there is free flow of air to the side of the instrument.
Do not place loose papers or cloths below or to the sides of the instrument, as these could impede the air circulation if drawn in.
Put the instrument on the castors directly on the floor, do not use a pad.
Make sure the castor brakes are locked.
Place only BUCHI spray dryer on the instrument.
Do not place the instrument near vibration-sensitive devices.
Operation Manual Inert Loop S-395 15/34
4 | Transport and storage
4
4.1
Büchi Labortechnik AG
Transport and storage
Transport
NOTICE
Risk of breakage due to incorrect transportation u u
Make sure that all parts of the instrument are safely packed in such a way as to prevent breakage, ideally in the original box.
Avoid sharp movements during transit.
4.2
4.3
u u u
After transportation, check the instrument for damage.
Damage that has occurred in transit should be reported to the carrier.
Keep packing for future transportation.
Storage
u u u
Make sure that the ambient conditions are complied with (see Chapter 3.4
Wherever possible, store the instrument in its original packaging.
After storage, check the instrument, all seals and tubing for damage and replace if necessary.
Moving the instrument
u
Release the castor breaks.
u
Move the instrument to the designated place.
u
Lock the castor breaks.
16/34 Operation Manual Inert Loop S-395
Büchi Labortechnik AG
5
5.1
Installation | 5
Installation
Before installation
NOTICE
Instrument damaged if switched on too early.
After transporting, wait twelve hours before switching on the instrument. The fluid in the cooling system requires twelve hours to collect in the refrigerant compressor.
5.2
Establishing electrical connections
NOTICE
Risk of instrument damage because of not suitable power supply cables.
Not suitable power supply cables can cause bad performance or an instrument damage u
Use only BUCHI power supply cables.
5.3
Precondition:
R The electrical installation is as specified on the type plate.
R The electrical installation is equipped with a proper grounding system.
R The electrical installation is equipped with suitable fuses and electrical safety features.
R The installation site is as specified in the
technical date. See Chapter 3.4 "Technical data", page 12
u
Connect the power supply cable to the
connection on the instrument. See Chapter 3.2
u
Connect the mains plug to an own mains outlet socket.
Installing the exhaust gas hose
CAUTION
Risk of overpressure due to clogged exhaust.
Overpressure can damage the instrument or impact the safety of the user.
u
Do not bend, fold or squeeze tubes that are connected to the exhaust.
Operation Manual Inert Loop S-395 17/34
5 | Installation u
Install the exhaust tube onto the exhaust connection.
u
Attach the tube in place with a hose clamp.
u
Place the other end of the tubing to a fume hood.
5.4
Installing the solvent receiving vessel
u
Put the PTFE hose connection on the bottle.
Büchi Labortechnik AG u
Put the solvent receiving vessel in place.
u
Install the PTFE hose onto the condensate drain valve.
u
Open the condensate drain valve.
18/34 Operation Manual Inert Loop S-395
Büchi Labortechnik AG u
Make sure that the lever of the condensate drain valve is in the position indicated.
Installation | 5
5.5
5.6
Installing the oxygen sensor for the first time
The primary installation of the oxygen sensor for a new instrument will be guided by
Installations for a spray drying mode
For installations for a spray drying mode, see separate installation manuals.
"MiniSprayDryer S-300 in closed mode with Dehumidifier and Inert Loop"
"MiniSprayDryer S-300 in closed mode with Inert Loop"
"MiniSprayDryer S-300 in open pressure mode"
"MiniSprayDryer S-300 in open suction mode"
Operation Manual Inert Loop S-395 19/34
6 | Operation
6
6.1
6.2
Büchi Labortechnik AG
Operation
Preparing the instrument
Precondition:
R
All commissioning operations have been completed. See Chapter 5 "Installation", page 17
u
Press the button Switch off .
Starting the instrument
NOTICE
Too frequent switching on the instrument
Too frequent switching on the instrument can cause an instrument damage.
u
Wait 10 minutes before restarting the instrument.
NOTE
The correct oxygen value is between 20 - 21 %.
If this value is not reached.
u
Calibrate the oxygen sensor. See Chapter 7.5 "Calibrating the oxygen analyzer", page 23
ð If a calibration of at least 20.5 % can not be reached replace the sensor. See
Chapter 7.7 "Changing the oxygen sensor", page 27.
Precondition:
R
The instrument is prepared. See Chapter 6.1 "Preparing the instrument", page 20.
R
u
Switch on the connected spray dryer. See Operation manual of the connected spray dry.
ð The signal lamp oxygen is on.
ð The signal lamp pressure is on.
u u u u u u
Connect the communication cable.
Check the oxygen value. See Chapter 3.2.1 "Front view", page 10.
Set condenser temperature. See Chapter 6.6 "Setting condenser temperature", page 21.
Press the Switch on
button. See Chapter 3.2.3 "Control elements", page 11.
Make sure, that the compressor is working.
Switch on the aspirator. See Operation manual of the connected spray dryer.
ð The signal lamp pressure is off.
u u
Switch on the spray gas.
Wait until the oxygen level is less than 6 %.
ð The signal lamp oxygen is off.
20/34 Operation Manual Inert Loop S-395
Büchi Labortechnik AG
6.3
6.4
6.5
6.6
Operation | 6 u
All following functions of the instrument are controlled by the spray drying system.
Tasks during spray drying
u u
Check the filling level of the solvent receiving vessel.
ð
If necessary empty it. See Chapter 7.2 "Empty the solvent receiving vessel", page 22
Check the temperature.
Shutting down the instrument
Precondition:
R The spray drying process is finished. See operation manual of the connected spray dryer.
u
Switch off the spray gas. See operation manual of the connected spray dryer.
ð The signal lamp oxygen is on.
u u u
Switch off temperature. See operation manual of the connected spray dryer.
Wait until the temperature is less than 70 °C.
Switch off the aspirator. See operation manual of the connected spray dryer.
ð The signal lamp pressure is on.
u
Empty the solvent receiving vessel. See Empty the solvent receiving vessel
Switching off the instrument
Precondition:
R The instrument is shut down. See Shutting down the instrument u u u
Press the Switch off
button. See Chapter 3.2.3 "Control elements", page 11.
Disconnect the communication cable.
Disconnect the power cable.
Setting condenser temperature
Increase temperature
u
Press the button Set temperature UP
. See Chapter 3.2.3 "Control elements", page 11.
Decrease the temperature
u
Press the button Set temperature DOWN
. See Chapter 3.2.3 "Control elements", page 11.
Operation Manual Inert Loop S-395 21/34
7 | Cleaning and servicing
7
7.1
Büchi Labortechnik AG
Cleaning and servicing
NOTE u u u u
Carry out only the service and cleaning operations described in this section.
Do not carry out any servicing and cleaning operations that involve opening the housing.
Use only genuine BUCHI spare parts in order to ensure correct operation and preserve the warranty.
Carry out the service and cleaning operations described in this section to extent the lifetime of the instrument.
Regular maintenance work
7.2
Action
Empty the solvent receiving vessel
Cleaning the ventilation slots
Calibrating the oxygen analyzer
Checking the controller of the oxygen sensor
1 - Operator
1
1
Empty the solvent receiving vessel
u
Close the condensate drain valve.
1
1
1
Every two years Additional information
1 Operational life of sensor is
2 years
22/34 Operation Manual Inert Loop S-395
Büchi Labortechnik AG u
Disconnect the solvent receiving vessel.
Cleaning and servicing | 7 u
Remove the solvent receiving vessel from the instrument.
7.3
7.4
7.5
u
Empty the solvent receiving vessel.
u
Install the solvent receiving vessel in revers order.
Cleaning the housing
u u u
Wipe down the housing with a damp cloth.
If heavily soiled, use ethanol or a mild detergent.
Wipe down the display with a damp cloth.
Cleaning the ventilation slots
u
Remove dust and foreign objects from the ventilation slots using compressed air or a vacuum cleaner.
Calibrating the oxygen analyzer
NOTE
The calibration should be performed with the sensor removed.
To avoid calibration errors, clean ambient air or certified 20.9% level oxygen should be applied to the sensor.
u
If an ambient air calibration is performed, it is recommended that the oxygen level is confirmed by a portable oxygen meter.
Operation Manual Inert Loop S-395 23/34
7 | Cleaning and servicing
1
%
3 2
Fig. 5: Control elements oxygen sensor
1 Display
3 INCREMENT
2 DECREMENT
Precondition:
R The correct oxygen value is between 20 - 21 %.
u
If this value is not reached the sensor needs to be calibrated.
u
Disconnect the power cable.
Büchi Labortechnik AG u
Disconnect the communication cable, see
Chapter 3.2.1 "Front view", page 10.
u
Remove the screws at the indicated positions.
u
Open the front cover oxygen sensor.
u
Remove the grounding cable from the front cover oxygen sensor.
24/34 Operation Manual Inert Loop S-395
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Disconnect the sensor cable by rotating the securing ring of the cable plug.
u
Pull off the plug from the sensor.
Cleaning and servicing | 7
% u
Remove the oxygen sensor.
% u
Make sure the O-ring (1) stays in its position.
1 u
Reconnect the communication cable, see
Chapter 3.2.1 "Front view", page 10.
u
Reconnect the sensor cable.
u
Wait 15 minutes for the electronics to warm up.
Operation Manual Inert Loop S-395 25/34
7 | Cleaning and servicing u
Press the button INCREMENT or DECREMENT to set calibration gas level.
u
For fine adjustment press one of the buttons short.
u
For accelerated adjustment press one of the buttons constantly.
u
Do not press both buttons together.
ð When the display reads 20.9%, the calibration is completed.
ð If a calibration of at least 20.5% can not be
reached replace the sensor. See Chapter 7.7
"Changing the oxygen sensor", page 27.
u
Disconnect the communication cable, see
Chapter 3.2.1 "Front view", page 10.
u
Disconnect the sensor cable.
Precondition:
R The O-ring stays in its position.
u
Install the oxygen sensor.
ð Screwing force was chosen that sensor is clearly fixed, but not excessively hard.
%
Büchi Labortechnik AG u
Fit the cable plug on the sensor.
u
Connect the sensor cable by rotating the securing ring of the cable plug.
% u
Reconnect the communication cable, see
Chapter 3.2.1 "Front view", page 10.
u
Install the grounding cable.
26/34 Operation Manual Inert Loop S-395
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Install the front cover.
u
Place the screws at the indicated positions.
u
Connect the power cable.
Cleaning and servicing | 7
7.6
Checking the controller of the oxygen sensor
u u
Check the correct function of the controller for the oxygen sensor.
For further information take a look at the document NTR1401-X-SUB03-T2b-
AP10-M2-111 from the sensor manufacturer Ntron Gas Measurement Ltd.
7.7
Changing the oxygen sensor
7.7.1
Removing the oxygen sensor u
Disconnect the power cable.
u
Disconnect the communication cable, see
Chapter 3.2.1 "Front view", page 10.
u
Remove the screws at the indicated positions.
u
Open the front cover oxygen sensor.
u
Remove the grounding cable from the front cover oxygen sensor.
Operation Manual Inert Loop S-395 27/34
7 | Cleaning and servicing u
Disconnect the sensor cable by rotating the securing ring of the cable plug.
u
Pull off the plug from the sensor.
%
Büchi Labortechnik AG u
Remove the oxygen sensor.
% u
Remove the O-ring (1).
1
28/34
7.7.2
Installing the oxygen sensor
Precondition:
R There is no oxygen sensor installed. See
Chapter 7.7.1 "Removing the oxygen sensor", page 27.
R The power cable is disconnected.
u
Install a new O-ring (1).
ð The O-ring is seated properly and cannot fall out accidentally.
1
Operation Manual Inert Loop S-395
Büchi Labortechnik AG
Precondition:
R The sensor has been calibrated, in case it is a
new sensor. See Chapter 7.5 "Calibrating the oxygen analyzer", page 23.
R The communication cable is disconnected.
u
Install the oxygen sensor.
ð Screwing force was chosen that sensor is clearly fixed, but not excessively hard.
u
Fit the cable plug on the sensor.
u
Connect the sensor cable by rotating the securing ring of the cable plug.
%
Cleaning and servicing | 7
% u
Reconnect the communication cable, see
Chapter 3.2.1 "Front view", page 10.
u
Install the grounding cable.
u
Install the front cover.
u
Place the screws at the indicated positions.
u
Connect the power cable.
Operation Manual Inert Loop S-395 29/34
8 | Help with faults
8
8.1
Büchi Labortechnik AG
Help with faults
Error messages
NOTICE
Too frequent switching on the instrument
Too frequent switching on the instrument can cause an instrument damage.
u
Wait 10 minutes before restarting the instrument.
Fault code Fault
E01
E02
Temperature sensor defective
Temperature error
Remedy u
Switch off the instrument.
u
Wait until the instrument is in ambient temperature.
u
Remove dust and foreign objects from the ventilation slots using compressed air or a vacuum cleaner.
u
Switch on the instrument.
u Contact BUCHI Customer Service.
E04 Compressor pressure fault
E05
E06
Data error
Electronic circuitry overheated u
Switch off the instrument.
u
Wait until the instrument is in ambient temperature.
u
Switch on the instrument.
u Contact BUCHI Customer Service.
u
Switch off the instrument.
u
Switch on the instrument.
u Contact BUCHI Customer Service.
u
Switch off the instrument.
u
Wait until the instrument is in ambient temperature.
u
Remove dust and foreign objects from the ventilation slots using compressed air or a vacuum cleaner.
u
Switch on the instrument.
u Contact BUCHI Customer Service.
30/34 Operation Manual Inert Loop S-395
Büchi Labortechnik AG
9
9.1
9.2
Taking out of service and disposal | 9
Taking out of service and disposal
Taking out of service
u u
Switch off the instrument and disconnect it from the mains power supply.
Remove all tubing and communication cables from the instrument.
Refrigerant
CAUTION
Potential environmental hazard.
The instrument uses refrigerant. See Chapter 3.4 "Technical data", page 12
u
Dispose of the appliance properly, if necessary using a professional disposal service.
9.3
9.4
Disposal
The operator is responsible for proper disposal of the instrument.
u
When disposing of equipment observe the local regulations and statutory requirements regarding waste disposal.
u
When disposing, observe the disposal regulations of the materials used. Materials
used see Chapter 3.4 "Technical data", page 12.
Returning the instrument
Before returning the instrument, contact the BÜCHI Labortechnik AG Service
Department.
https://www.buchi.com/contact
Operation Manual Inert Loop S-395 31/34
10 | Appendix
10 Appendix
10.1
Spare parts
Seal PTFE 005155
PTFE hose connection SVL
22
027338
Büchi Labortechnik AG
Order no.
32/34
Sealing FKM for hose coupling
Woulf Bottle
Screw cap SVL 22
Screw cap SVL22
Receiving vessel for solvent
Hose Inert Loop TPR conf.
Oxygen Sensor S-395
Shelf life max. 1 year
Order no.
11056479
041875
003577
005222
040398
11071076
11075130
Image
Operation Manual Inert Loop S-395
Büchi Labortechnik AG
O-Ring Ø29.82x2.62 FKM 70
Vacuum clamp KF 25
Silicone hose 10x2.0x80 V0
Order no.
11075133
11063662
11075249
Appendix | 10
Image
Operation Manual Inert Loop S-395 33/34
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