ESCO Technologies Labculture LB2 Series User manual

User
Manual
Esco Technologies, Inc.
2940 Turnpike Drive, Units 15-16 • Hatboro, PA 19040, USA
Toll-Free USA and Canada 1-877-479-3726
Tel [phone] • Fax [phone]
us.escoglobal.com • [e-mail]
Esco Micro Pte. Ltd.
21 Changi South Street 1 • Singapore 486 777
Tel [phone] • Fax [phone]
www.escoglobal.com • [email protected]m

Copyright Information
© Copyright 2011 Esco Micro Pte. Ltd. All rights reserved.
The information contained in this manual and the accompanying product is copyrighted and all rights are
reserved by Esco.
Esco reserves the right to make periodic minor design changes without obligation to notify any
person or entity of such change.
Sentinel™ and Labculture®are registered trademarks of Esco.
“Material in this manual is provided for informational purposes only. The contents and the product described in
this manual (including any appendix, addendum, attachment or inclusion), are subject to change without
notice. Esco makes no representations or warranties as to the accuracy of the information contained in this
manual. In no event shall Esco be held liable for any damages, direct or consequential, arising out of or related
to the use of this manual.”

Class II, Type B2 Biological Safety Cabinets
i
Table of Contents
INTRODUCTORY PAGES
i
Table of Contents
iii
Warranty Terms and Conditions
v
Introduction
v
1. Products Covered
v
2. Safety Warning
v
3. Limitation of Liability
v
4. European Union Directives on WEEE and RoHS
vii
Declaration of Conformity
USER SECTION
1
Chapter 1 –Product Information
1
1.1 Quick View
3
Chapter 2 –Control System
3
2.1 Sentinel Control System
4
2.2 Menu Options
4
2.2.1 Settings
5
2.2.2 Setting Mode
6
2.2.3 Field Calibration
6
2.2.4 Admin Settings
8
2.3 Stopwatch and Experiment Timer
8
2.4 Alarm and Warnings
9
2.5 Diagnostic Mode
11
Chapter 3 - Basic Cabinet Operation
11
3.1 Sash Window Operation
11
3.1.1 Sash Window State
11
3.1.2 Operating Motorized Sash Window
12
3.1.3 Using Sash Window
12
3.2 Starting and Shutting Down the BSC
12
3.2.1 Turning on the BSC
12
3.2.2 Turning off the BSC
12
3.3 Working in the BSC
13
3.4 Working Ergonomics
14
3.5 UV Lamps
14
3.6 Decontamination and Disinfecting Agents
17
Chapter 4 –Maintenance
17
4.1 Scheduled Maintenance
19
4.2 Maintenance/Service Log
APPENDIX

ii

Class II, Type B2 Biological Safety Cabinets
iii
Warranty Terms and Conditions
Esco products come with either a 1, 2 or 3 year limited warranty, depending on the product purchased,
beginning on the date of shipment from any Esco international warehousing location. To determine which
warranty applies to your product, refer to the appendix below.
Esco's limited warranty covers defects in materials and workmanship. Esco's liability under this limited
warranty shall be, at our option, to repair or replace any defective parts of the equipment, provided if proven
to the satisfaction of Esco that these parts were defective at the time of being sold, and that all defective parts
shall be returned, properly identified with a Return Authorization.
This limited warranty covers parts only, and not transportation/insurance charges.
This limited warranty does not cover:
Freight or installation (inside delivery handling) damage. If your product was damaged in transit, you
must file a claim directly with the freight carrier.
Products with missing or defaced serial numbers.
Products for which Esco has not received payment.
Problems that result from:
oExternal causes such as accident, abuse, misuse, problems with electrical power, improper
operating environmental conditions.
oServicing not authorized by Esco.
oUsage that is not in accordance with product instructions.
oFailure to follow the product instructions.
oFailure to perform preventive maintenance.
oProblems caused by using accessories, parts, or components not supplied by Esco.
oDamage by fire, floods, or acts of God.
oCustomer modifications to the product
Consumables such as filters (HEPA, ULPA, carbon, pre-filters) and fluorescent / UV bulbs.
Esco is not liable for any damage incurred on the objects used on or stored in Esco equipment. If the
objects are highly valuable, user is advised to have in place independent external preventive
measures such as connection to a centralized alarm system.
Factory installed, customer specified equipment or accessories are warranted only to the extent guaranteed by
the original manufacturer. The customer agrees that in relation to these products purchased through Esco, our
limited warranty shall not apply and the original manufacturer's warranty shall be the sole warranty in respect
of these products. The customer shall utilize that warranty for the support of such products and in any event
not look to Esco for such warranty support.
Esco encourages all users to register their equipment online at www.escoglobal.com/warranty or complete the
warranty registration form included with each product.
ALL EXPRESS AND IMPLIED WARRANTIES FOR THE PRODUCT, INCLUDING BUT NOT LIMITED TO ANY IMPLIED
WARRANTIES AND CONDITIONS OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
LIMITED IN TIME TO THE TERM OF THIS LIMITED WARRANTY. NO WARRANTIES, WHETHER EXPRESS OR
IMPLIED, WILL APPLY AFTER THE LIMITED WARRANTY PERIOD HAS EXPIRED. ESCO DOES NOT ACCEPT LIABILITY
BEYOND THE REMEDIES PROVIDED FOR IN THIS LIMITED WARRANTY OR FOR SPECIAL, INDIRECT,
CONSEQUENTIAL OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, ANY LIABILITY FOR THIRD-
PARTY CLAIMS AGAINST YOU FOR DAMAGES, FOR PRODUCTS NOT BEING AVAILABLE FOR USE, OR FOR LOST
WORK. ESCO'S LIABILITY WILL BE NO MORE THAN THE AMOUNT YOU PAID FOR THE PRODUCT THAT IS THE
SUBJECT OF A CLAIM. THIS IS THE MAXIMUM AMOUNT FOR WHICH ESCO IS RESPONSIBLE.

iv
These Terms and Conditions shall be governed by and construed in accordance with the laws of Singapore and
shall be subject to the exclusive jurisdiction of the courts of Singapore.
Technical Support, Warranty Service Contacts
USA: 1-877-479-3726
Singapore: [phone]
Global Email Helpdesk: [e-mail]
Visit http://www.escoglobal.com/ to talk to a Live Support Representative
Distributors are encouraged to visit the Distributor Intranet for self-help materials.
Product Appendix, Warranty Listings
Biological Safety Cabinets, Laminar Flow Cabinets,
HEPA-Filtered Cabinets (except Streamline brand)
The warranty periods for BSC may vary by country. Contact
your local distributor for specific warranty details.
Laboratory Fume Hoods
2 years limited.
Ductless Fume Hoods
4 years limited for Ascent Opti, 6 years for Ascent Max.
Cleanroom Equipment
1 year limited.
Laboratory Ovens and Incubators
1 year limited.
CO2Incubators
2 years limited.
Containment/Pharma Products
2 years limited.
Ultralow Temperature Freezer
3 years limited. 60 months on Compressor.
The warranty period starts two months from the date your equipment is shipped from Esco facility for
international distributors. This allows shipping time so the warranty will go into effect at approximately the
same time the equipment is delivered to the user. The warranty protection extends to any subsequent owner
during the warranty period. Distributors who stock Esco equipment are allowed an additional four months for
delivery and installation, providing the product is registered with Esco. User can register product online at
www.escoglobal.com/warranty or complete the warranty registration form included with each product.
Policy updated on 1st December 2011 (This limited warranty policy applies to products purchased on or after
1st January 2012)

Class II, Type B2 Biological Safety Cabinets
v
Introduction
1. Products Covered
Esco Biological Safety Cabinet –Labculture (LB2 Series)
Electrical Rating
0.9 meters
3 feet
1.2 meters
4 feet
1.5 meters
5 feet
1.8 meters
6 feet
220-240VAC 50Hz 1Φ
LB2-3B1
LB2-4B1
LB2-5B1
LB2-6B1
110-120VAC 60Hz 1Φ
LB2-3B2
LB2-4B2
LB2-5B2
LB2-6B2
220-240VAC 60Hz 1Φ
LB2-3B3
LB2-4B3
LB2-5B3
LB2-6B3
2. Safety Warning
Anyone working with, on or around this equipment should read this manual. Failure to read,
understand and follow the instructions given in this documentation may result in damage to the unit,
injury to operating personnel, and / or poor equipment performance.
Any internal adjustment, modification or maintenance to this equipment must be undertaken by
qualified service personnel.
The use of any hazardous materials in this equipment must be monitored by an industrial hygienist,
safety officer or some other suitably qualified individual.
Before you process, you should thoroughly understand the installation procedures and take note of
the environmental / electrical requirements.
In this manual, important safety related points will be marked with the symbol.
If the equipment is used in a manner not specified by this manual, the protection provided by this
equipment may be impaired.
3. Limitation of Liability
The disposal and / or emission of substances used in connection with this equipment may be governed by
various local regulations. Familiarization and compliance with any such regulations are the sole responsibility
of the users. Esco’s liability is limited with respect to user compliance with such regulations.
4. European Union Directive on WEEE and RoHS
The European Union has issued two directives:
• Directive 2002/96/EC on Waste Electrical and Electronic Equipment (WEEE)
This product is required to comply with the European Union’s Waste Electrical &
Electronic Equipment (WEEE) Directive 2002/96/EC. It is marked with the following
symbol:
Esco sells products through distributors throughout Europe. Contact your local Esco
distributor for recycling/disposal.
• Directive 2002/95/EC on Restriction on the use of Hazardous Substances (RoHS)
With respect to the directive on RoHS, please note that this hood falls under category 8 (medical devices) and
category 9 (monitoring and control instruments) and is therefore exempted from requirement to comply with
the provisions of this directive.

vi

Class II, Type B2 Biological Safety Cabinets
vii
Declaration of Conformation
In accordance to EN ISO/IEC 17050-1:2010
We, Esco Micro Pte. Ltd.
of 21 Changi South Street 1
Singapore, 486777
Tel: [phone]
Fax: [phone]
declare on our sole responsibility that the product:
Category : Class II Type B2 Biological Safety Cabinet
Brand : Labculture
Model : LB2-3B1, LB2-4B1, LB2-5B1, LB2-6B1
in accordance with the following directives:
2006/95/EEC : The Low Voltage Directive and its amending directives
92/31/EEC : The Electromagnetic Compatibility Directive and its amending
directives
has been designed to comply with the requirement of the following Harmonized Standard:
Low Voltage : EN 61010-1:2010
EMC : EN 61326-1:2006 Class B
Design/ : EN 12469:2000 Class II Biological Safety Cabinet
Performance
Criteria
More information may be obtained from Esco’s authorized distributors located within the European Union. A
list of these parties and their contact information is available on request from Esco.
_______________________________
XQ Lin
Group CEO, Esco
This Declaration of Conformity is only applicable for 230V AC 50Hz units

viii

1
Class II, Type B2 Biological Safety Cabinets
Chapter 1 - Product Information
1.1 Quick View
1. Esco Sentinel Control System
2. Sash Window
3. Interior Work Area
4. Armrest
1
2
3
4

2

3
Class II, Type B2 Biological Safety Cabinets
Chapter 2 – Sentinel Control System
2.1 Sentinel Control System
1. Fan Button
oTurns on and turn off the fan.
2. Lamp Button
oTurns on and turn off the fluorescent lamps.
3. Socket Button
oTurns on and turn off the electrical socket (retrofit kit).
oThe maximum rating of all the outlets in the cabinet is 5 A. If overload, the fuse will blow.
4. UV Button
oTurns on and turn off the UV lamp.
oUV lamp can only be activated when the sash window is fully closed. Since the sash is
capable of filtering UV rays, users are protected from the harmful UV radiation.
5. Up (▲) and Down (▼) Arrow Button
oMove the menu options upwards and downwards.
oIncrease and decrease corresponding value inside one of the menu options.
oMove the sash window upward and downward (for motorized sash BSC).
oAccessing the stopwatch and experiment timer function (for non-motorized sash BSC).
6. Set or Mute Button
oChoose the menu or sub-menu currently displayed on the LCD screen.
oProceed to the next step or sequence inside one of the menu options.
oTo mute the alarm sound (only in fully open state during normal mode)
7. Menu Button
oTo enter and exit from the menu options.
oTo go back to the previous level of the menu options.
oTo access maintenance mode from error condition.
Menu
Button
Set/Mute
Button
Up
Button
Down
Button
LCD
Display
Fan
Button
Lamp
Button
Socket
Button
UV
Button
When you are entering menu options, the alarm will sound to indicate that the microprocessor is
not monitoring the operation of the cabinet. No further warnings will be given.
Visual
Alarm

4
2.2 Menu Options
Please refer to the following diagram for complete reference to all menu options available.
MENU
SETTINGS
SET MODE
FIELD CALIBRATION
ADMIN
SET TIME
UV TIMER
MEASUREMENT UNIT
SET EXP. TIMER
DATA LOG PERIOD
STOPWATCH TIMER
EXPERIMENT TIMER
NORMAL MODE
QUICKSTART MODE
MAINTENANCE MODE
DOWNFLOW SENSOR
RESET CALIBRATION
NEW ADMIN PIN
NEW FAN PIN
A/F MONITOR
RESET B/H/M
RESET UV/H/M
RESET DEFAULT
AIRFLOW OUT TEMP
AUXILIARY OPTION
ALM MUTE DURATION
SET SASH CYCLE
XXXXX CYCLE
RESET SASH CYCLE
SET SASH CYCLE
XXX SEC
ENABLED | DISABLED
ENABLED | DISABLED
XXXX
XXXX
HH:MM
HH:MM
METRIC | IMPERIAL
HH:MM:SS
HH:MM:SS
EXTERNAL ALARM | MOTORIZED WINDOW
Only available when ADMIN PIN is used
Only available when MOTORIZED
WINDOW is chosen
2.2.1 Settings
Users may use the settings menu function to customize the operation of the BSC to meet specific application
requirements. The settings menu can be entered using both FAN PIN and ADMIN PIN.
2.2.1.1 Set Clock (Time)
Users can set the time by increasing/decreasing the hour and minute values. The correct time will be
maintained even after the unit is turned off.
MENU SETTINGS SET TIME HH:MM
2.2.1.2 UV Timer
UV timer can be used to switch off the UV lamp automatically after a fixed period. The UV timer can be set up
to 18 hours. By default, the timer is set to 60 minutes, which is considered the most effective UV
decontamination time. Esco does not recommend leaving the UV lamp on for more than 60 minutes as it
shortens the lifespan of the UV lamp. Without the UV timer, the lamp has to be switched off manually.
MENU SETTINGS UV TIMER HH:MM

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Class II, Type B2 Biological Safety Cabinets
2.2.1.3 Measurement Unit
Using this option, the user can select the unit in which air velocity is measured and displayed. The user can
choose between metric (m/s) and imperial (fpm).
MENU SETTINGS MEASUREMENT UNIT IMPERIAL
METRIC
2.2.1.4 Set Experiment Timer
Experiment timer is a countdown timer that can be used for critical experiment. Experiment timer can be set
between “00:00:00” and “17:59:59”.
MENU SETTINGS SET EXP TIMER HH:MM:SS
2.2.1.5 Data Log Period
Using RS232 communication port, the BSC can send data on the condition of the BSC to a PC. Data Log Period
option allows the user to control the amount of time in between the BSC data sending procedure.
2.2.1.6 Stopwatch Timer
This menu enable the personel to use stopwatch timer function in a BSC with motorized window. See section
2.3 for more information on stopwatch timer function.
MENU SETTINGS STOPWATCH TIMER
2.2.1.7 Experiment Timer
This menu enable the personel to use experiment timer function in a BSC with motorized window. See section
2.3 for more information on experiment timer function and section 2.2.1.4 for information on setting t
experiment timer.
MENU SETTINGS EXPERIMENT TIMER
2.2.2 Setting Mode
LB2 BSC has three working mode; two of which, normal mode and quickstart mode, can be used in daily
activity. Both of these modes can be seen and accessed when you enter the FAN PIN. Maintenance mode can
only be accessed using the ADMIN PIN
NORMAL MODE
MENU SET MODE QUICKSTART MODE
MAINTENANCE MODE
2.2.2.1 Normal Mode
The normal mode is activated by factory default. In this mode, all alarms and interlocks are enabled.
2.2.2.7 Quickstart Mode
Quickstart mode allows the user to activate the blower and the light simply by opening the sash window to the
operating position. In this mode, all alarms and interlocks are enabled.
2.2.2.3 Maintenance Mode
Maintenance mode should only be accessed by qualified personnel during maintenance. In this mode, all
alarms are disabled and all interlocks are defeated.

6
2.2.3 Field Calibration
The purpose of calibration is to ensure the accuracy of the airflow display and alarm (if present). This involves
measuring airflow with reference instrumentation and establishing reference between airflow sensor(s) on the
BSC to the standard reference. Calibration should only be carried out by trained personnel. This section is
presents a brief overview of the calibration menu function. For more information, refer to test report.
MENU FIELD CALIBRATION
AIRFLOW CALIB
RESET CALIBRATION
2.2.3.1 Airflow Calib
This option allows proper calibration and operation of the airflow sensor alarm. There will be three points to
be calibrated, namely inflow fail point, inflow nominal point, and downflow nominal point.
2.2.3.2 Reset Calibration
This option allows the user to reset all value calibrated in the field and return it to the values gathered in
factory calibration.
2.2.4 Admin Settings
The admin menu allows you to change both FAN and ADMIN PIN. The reset blower, filter and UV hour meter
functions are usually used after you change the blower, filter or UV lamp as they can easily give you the
indication on when to do BSC maintenance. While the reset default function will return the options in the
settings menu to their factory settings.
2.2.4.1 New ADMIN PIN (default 0009)
ADMIN PIN restricts access to some of the more delicate menu functions, namely admin and field calibration,
which should only be accessed by a qualified personnel. User must enter four digits ADMIN PIN before accessing
these menus.
ADMIN PIN can also be used to switch to maintenance mode from ERR.MSWITCH and AIR FAIL! error
condition.
MENU ADMIN NEW ADMIN PIN XXXX
2.2.4.2 New FAN PIN (default 0000 - DISABLED)
FAN PIN restricts access to fan control and some parts of the menu, settings and set mode. User must enter
four-digit PIN before switching fan on or off. As such, it can restrict access to operating the BSC by
unauthorized personnel. It will also prevent unauthorized shutdown of the BSC when continuous operation is
required. Note that continuous operation is recommended for better safety. Fan PIN is also needed to disable
the alarm when the sash is fully raised and cleaning needs to be performed.
It is recommended that the Fan PIN be issued only to personnel authorized to use the BSC. With FAN PIN, the
user can access admin and set mode parts of the menu.
Setting the PIN to 0000 will disable this feature. The FAN PIN is disabled by default. When the FAN PIN is
disabled, the BSC can be turned on and off without requiring PIN, however to access the menu, the user is still
required to enter the FAN PIN (0000).
MENU ADMIN NEW FAN PIN XXXX

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Class II, Type B2 Biological Safety Cabinets
2.2.4.3 Airflow Monitor
Whenever the air velocity falls below the fail point, the air fail alarm will be triggered. This option is used to
enable/disable alarm. The alarm is enabled by default.
If the ambient temperature is outside of 18-30oC (which is the cabinet working temperature), the Airflow
Monitor is automatically disabled
MENU ADMIN AIRFLOW MONITOR
DISABLED
ENABLED
2.2.4.4 Reset B/H/M
This option is used to reset the blower hour meter. The blower hour meter indicates how long the blower has
been in operation. There’s no maximum value in blower hour meter. The counter value can be checked while
in the diagnostic mode. The value can also provide some help in setting up maintenance schedule.
MENU ADMIN RESET B/H/M
2.2.4.5 Reset UV/H/M
This option is used to reset the UV lamp hour meter. The UV lamp hour meter indicates how long the UV lamp
has been in operation. Maximum counter is set at 2000 hours (100%). The counter value can be checked while
in the diagnostic mode. Please reset the UV lamp hour meter after each UV lamp replacement.
MENU ADMIN RESET UV/H/M
2.2.4.6 Reset Default
User can reset the default setting by choosing this option. The features being reset are UV timer (60 minute),
measurement unit (Metric), A/F monitor (enabled), ADMIN PIN (0009), and FAN PIN (0000).
Note that the calibration settings cannot be reset as it may cause the BSC to operate in an unsafe manner. The
hour meters cannot be reset either.
MENU ADMIN RESET DEFAULT
2.2.4.7 Airflow Out Temp
Using this option, the user can select the whether or not to display the airflow when the ambient temperature
is out of optimum temperature range, below 18oC (65oF) or above 30oC (86oF).
MENU ADMIN AIRFLOW OUT TEMP
DISABLED
ENABLED
2.2.4.8 Auxiliary Option
Using this option, the user can select whether to use external alarm or motorized window
MENU ADMIN AUXILIARY OPTION
MOTORIZED WINDOW
EXTERNAL ALARM
2.2.4.9 Alarm Mute Duration
To mute AIRFAIL alarm for a certain period. The ALM.MUTE DURATION can be set to any time duration up to
299 seconds. Default is 30 seconds.
MENU ADMIN ALM MUTE DURATION XXX

8
2.2.4.10 Set Sash Cycle (Only for Motorized BSC)
To reset the sash cycles count to zero or to input the sash cycle count manually. The maximum of value of sash
cycles is 16000. The cycles will raise every sash move to up and down.
Warning message will be showed after the cycle value reach 15000.
1st warning: “Replace Sash Motor” – after sash reached 15000 cycles.
2nd warning: “Stop Using Sash” - after sash reached 15500 cycles.
3rd warning: “Sash Motor Locked” (Sash motor cannot operate anymore) - after sash reached 16000 cycles.
MENU ADMIN SET SASH CYCLE
RESET SASH CYCLE
SET SASH CYCLE
2.3 Stopwatch and Experiment Timer (only for non-motorized sash BSC)
The stopwatch function can be started by pressing the UP button while the sash is in the safe/ready
position. Pressing UP button again while the stopwatch function will stop and resume the timer.
Pressing DOWN button will leave the stopwatch function and reset the timer. The timer in the
stopwatch function is counting up and shown using the HH:MM:SS format.
The experiment timer can be started by pressing the DOWN button while the sash is in the safe/ready
position. Pressing DOWN button while the experiment timer function is working will stop and resume
the timer. Pressing the UP button will leave the experiment timer function and reset the timer. The
timer in the experiment timer function is counting down and shown using the HH:MM:SS format.
Operator can use the SETTINGS | EXPERIMENT TIMER menu (refer to section 2.2.1.4) to set the
experiment timer.
2.4 Alarms and Warnings
BSC uses alarms to indicate that the condition inside the BSC is not safe for the operator, so check the LCD
display to understand the cause of these alarms. The most common alarm is the SASH ALARM that indicates
that the sash is neither at the normal operating height nor at fully closed position (UV mode) –this condition
can easily be corrected by putting the sash at the appropriate operation position.
Another warning that should be acted upon is AIR FAIL! which indicates that there is airflow failure. The
operator should check if there is any obstruction to the airflow, and correct it if possible. However, if the
problem continues, the operator should stop working as the BSC’s protection may have been compromised.
Call service or Esco’s local distributor.
Other alarms that indicate a failure or an error in the BSC system:
AIRFAIL:NO! will be displayed if the blower is turned off while there is an airflow failure.
SASH:ERROR POSITION will be displayed if the microprocessor (controller) detects more than one
micro-switch activated at the same time, which is impossible, as the sash can only be at one position
at one time. This indicates a failure in the sash detection system.
SENSOR UNCALIBRATED will be displayed if the airflow velocity sensor is not yet calibrated.

9
Class II, Type B2 Biological Safety Cabinets
2.5 Diagnostic Mode
Diagnostic mode can be accessed by pressing the SET button. The diagnostic mode allows the user to know the
condition of the BSC or help the service engineer during maintenance and troubleshooting.
On Screen
Explanation
MODE
Shows which mode is active: NORMAL MODE, QUICKSTART MODE or MAINTENANCE MODE
VERSION
Shows the version of the firmware
TEMPERATURE
Shows the temperature inside the cabinet
B/H/M
Blower Hour Meter –increase by the hour
UV LIFE
Shows the UV life
SASH CYCLE
Shows how many times the sash has been used (only for BSC with motorized sash)
UV TIMER
Shows the UV timer value –default is 60 minutes. Maximum value is 00 minutes (infinite on)
MUTE TIMER
Shows how long the airfail alarm is muted
AF MONITOR
Airflow monitor condition
AF OUT TEMP
Airflow out of range temperature condition
ADC DMIN
ADC value for minimum downflow
ADC DNOM
ADC value for nominal downflow
ADC DFA
ADC value for actual downflow
ADC D0
ADC value for no downflow (blower off)
ADC DF1
ADC value for minimum downflow from factory
ADC DF2
ADC value for nominal downflow from factory
VEL. DMIN
Minimum downflow velocity
VEL. DNOM
Nominal downflow velocity
VEL. DF1
Minimum downflow velocity from factory
VEL. DF2
Nominal downflow velocity from factory
CALIB. TEMP
Temperature value during calibration
CONS. (DWN)
Airflow sensor constant
ADC TEMP
ADC value for TEMPERATURE
M_SWITCH1
Shows the condition of magnetic switch 1 –fully open position
M_SWITCH2
Shows the condition of magnetic switch 2 –safe position
M_SWITCH3
Shows the condition of magnetic switch 3 –fully closed position

10