TEL AFA4000/1 User manual

AFA4000/1

Airflow monitor

Installation and operating manual

Issue 1

 
AFA4000/1 Airflow Monitor / p.2 
Contents 
Introduction.......................................................................................................................................................... 5 
1 Features...................................................................................................................................................... 6 
Safety...................................................................................................................................................................... 7 
1 Safety practices........................................................................................................................................ 7 
2 Precautions................................................................................................................................................ 7 
3 Warnings.................................................................................................................................................... 7 
4 Operating conditions............................................................................................................................. 8 
5 Electrical safety ........................................................................................................................................ 9 
6 Electrical protection..............................................................................................................................10 
7 EMC compliance....................................................................................................................................11 
Overview: Airflow Monitor.............................................................................................................................12 
1 Display......................................................................................................................................................12 
2 Alarms and events.................................................................................................................................14 
3 Controls and indicators.......................................................................................................................16 
4 Operator display panel menu navigation ......................................................................................17 
5 External connections ............................................................................................................................19 
6 Functions .................................................................................................................................................21 
7 Components ...........................................................................................................................................26 
Overview: Auto Sash Controller ...................................................................................................................28 
1 Features....................................................................................................................................................28 
2 Auto Sash control options..................................................................................................................29 
3 Control system components..............................................................................................................32 
Installation: Airflow Monitor..........................................................................................................................40 
1 Location....................................................................................................................................................40 
2 Installation...............................................................................................................................................42 
3 Connections............................................................................................................................................45 
4 Dimensions..............................................................................................................................................49 

 
AFA4000/1 Airflow Monitor / p.3 
5 Start up.....................................................................................................................................................51 
Installation: Auto Sash Controller................................................................................................................53 
1 Auto Sash Control Unit........................................................................................................................53 
2 Auto Sash keypad / alarm panel.......................................................................................................56 
3 Auto Sash motor drive unit................................................................................................................57 
4 Sash light curtain...................................................................................................................................65 
5 Installing and aligning the Under Sash sensor.............................................................................72 
6 Tilt switch.................................................................................................................................................74 
7 Sash Low switch.....................................................................................................................................75 
8 Sash position sensor ............................................................................................................................77 
9 Personnel sensor ...................................................................................................................................79 
10 Auto Sash System Control Box - general wiring diagram ........................................................87 
11 Start up.....................................................................................................................................................88 
Calibration ..........................................................................................................................................................89 
1 AFA4000/1 Airflow Monitor...............................................................................................................89 
2 Auto Sash Controller 1, 2 or 3 position..........................................................................................91 
3 Sash lock function.................................................................................................................................93 
4 Auto Sash Controller –stand-alone ................................................................................................94 
Configuration...................................................................................................................................................103 
1 AFA4000/1 configuration menus ...................................................................................................103 
2 AFA4000/1/AS configuration menus ............................................................................................111 
3 Auto Sash Controller system menus .............................................................................................123 
Auxiliary features and connections ...........................................................................................................131 
1 Optional input function - temperature sensor...........................................................................131 
2 Optional input function –close sash alarm.................................................................................133 
RS485 communications output..................................................................................................................136 
1 Overview and connections ...............................................................................................................136 
2 Configuration settings.......................................................................................................................138 
3 Config Manager...................................................................................................................................140 

 
AFA4000/1 Airflow Monitor / p.4 
Operation: Airflow Monitor .........................................................................................................................142 
1 Run screen.............................................................................................................................................142 
Operation: Auto Sash Controller................................................................................................................143 
1 Control philosophy.............................................................................................................................143 
2 Modes of operation............................................................................................................................143 
3 Operation and alarm indication......................................................................................................147 
Troubleshooting..............................................................................................................................................149 
1 Fault finding..........................................................................................................................................149 
2 Diagnostics menu................................................................................................................................153 
3 Auto sash alarm indications.............................................................................................................155 
Cleaning and maintenance..........................................................................................................................158 
1 Cleaning .................................................................................................................................................158 
2 Contamination .....................................................................................................................................159 
3 Maintenance.........................................................................................................................................159 
Technical specifications ................................................................................................................................160 
1 AFA4000/1 Airflow Monitor.............................................................................................................160 
2 Auto Sash Controller ..........................................................................................................................162 
Warranty............................................................................................................................................................169 
Index...................................................................................................................................................................171 

AFA4000/1 Airflow Monitor / p.5

1. Introduction

The TEL AFA4000 is a system for controlling and monitoring airflow in industrial and

educational fume cupboards and biological safety cabinets for user safety. The AFA4000

airflow monitor and controller is available with optional Auto Sash integration. Using the

Auto Sash with the AFA4000 controller means you will no longer need a separate Auto

Sash keypad.

The AFA4000 user interface is full colour, intuitive and is easy to navigate. It features a

simple two-step calibration process with on-screen prompts to guide end users. The

unrivalled reliability of the AFA4000 means that once calibrated, you will not need to re-

calibrate in the future. The AFA4000 has in-built communications as standard and it can

be used with either Modbus or BACnet protocol.

Featuring an innovative hot wire sensor, the AFA4000 has no inherent drift meaning that

the sensor will provide stable readings over many years of operation ensuring reliability

and safety.

The AFA4000 has full alarm diagnostics and test functionality, a sixty-minute timeline of

environmental conditions and field-upgradable software, with password protected

menus and diagnostic menus to aid installation and commissioning.

This manual covers the AFA4000/1 and AFA4000/1/AS airflow monitors.

AFA4000/1 Airflow Monitor / p.6

1.1 Features

•Full colour 3.5” LCD Display for continuous velocity reading in m/sec

•Auto Sash integration

•BACnet and Modbus on board

•Velocity bar graph or fault time line over the last 60 minutes

•Visual & audible alarms

•Three digital inputs and three digital outputs

•Diagnostics Menu

•Bespoke overlay designs, with a choice of two, coloured cases

•Bespoke software options tailored to customer requirements

•Touch sensitive buttons

AFA4000/1 Airflow Monitor / p.7

2. Safety

2.1 Safety practices

This guide is a supplement to the safety codes of the user’s country. Not every safety

procedure that should be followed is covered by this guide. Maintaining a safe

laboratory environment is the responsibility of the user.

Review product documentation prior to use and follow instructions carefully.

If the Airflow Monitor or Auto Sash Controller are not used or operated in accordance

with this manual, the protection provided by the devices may be impaired.

2.2 Precautions

•Ensure the equipment voltage corresponds to the voltage available at the installation

position.

•Do not remove equipment panels without shutting down the equipment and

disconnecting the power supply.

2.3 Warnings

2.3.1 Warning notices

WARNINGS must be followed in order to avoid personal injury.

2.3.2 Warning labels

WARNINGS appear as follows:

Switch off the mains voltage and remove the mains cord before

maintenance.

Always follow the instructions given by warning labels on the equipment. For further

information refer to this guide and other documentation provided.

AFA4000/1 Airflow Monitor / p.8

2.4 Operating conditions

2.4.1 General operation

The Airflow Monitor and associated equipment have been designed and tested in

accordance with the International Electrotechnical Commissions (IEC) safety

requirements. The Airflow Monitor conforms to IEC61010-1 (Safety Requirements for

electrical equipment for measurement, control and laboratory use) as it applies to IEC

Class 1 (earthed) appliances, and therefore meets the requirements of EC directive

2014/30/EU.

Adjustment, maintenance or repair of the equipment whilst covers are open or the

equipment is in operation is only to be done by skilled persons who are aware of the

potential hazards.

Make unsafe equipment inoperative.

Examples of unsafe equipment:

•Appears damaged

•Fails to perform correctly

•Has undergone transport stresses

•Has been stored incorrectly

2.4.2 Environmental conditions

Ensure the equipment is used under the following conditions:

•Indoors

•Temperature, 5°C to 40°C

•Relative humidity below 80% for temperatures up to 31°C, decreasing linearly to 50%

at 40°C

•Electrical supply fluctuations not to exceed +10% of nominal voltage

The protection provided by the equipment may be impaired if the

environmental conditions do not lie within these parameters.

AFA4000/1 Airflow Monitor / p.9

2.5 Electrical safety

Lethal voltages are present at certain points within the equipment.

When the equipment is connected to mains power, removing the

equipment's covers is likely to expose live parts.

Even when the power switch is off, high voltage can still be present.

Capacitors within the equipment may still be charged even if the equipment

has been disconnected from all live voltage sources.

Connect the Airflow Monitor and associated equipment correctly to a suitable electrical

supply. The supply must have a correctly installed protective conductor (earth or

ground), which must be installed and checked by a qualified electrician before initial

power up.

Any interruption of the protective conductor inside or outside the Auto-Sash

Controller System, or disconnection of the protective conductor terminal is

likely to make the equipment dangerous.

Never interrupt the protective conductor.

If the mains power cord needs to be replaced, ensure that the replacement

cord is appropriately rated and approved for the intended use.

To prevent potential personal injury and damage to the equipment, switch

OFF all components in the system and disconnect them from the mains

power supply before altering or making any new electrical connections.

When working with the Airflow Monitor System and/or the Auto Sash Controller System:

•Do not operate equipment with any covers or internal parts removed.

•Disconnect the equipment from live voltage sources before adjustments,

replacements, maintenance or repairs are carried out. If the equipment must be

operated during adjustment, maintenance or repair, only a supplier’s Service Engineer

is to carry out the procedure.

AFA4000/1 Airflow Monitor / p.10

•Ensure equipment that is not electrically safe is made inoperative. Secure the

equipment against unauthorised or unintentional operation. Examples of electrically

unsafe equipment conditions are as follows:

•Appears damaged

•Has undergone transport stresses

•Has been stored incorrectly

2.6 Electrical protection

Observe the following electrical protection precautions:

Insulation:

Class I rating for external circuits.

Only connect equipment that meets the requirements of IEC

61010-1, IEC 60950 or equivalent standards.

Installation category:

The equipment can withstand transient over-voltages

typically present on the mains supply. The normal level of

transient over-voltages is impulse withstand (overvoltage)

Category II of IEC 60364-4-443.

Pollution degree 2:

Normally only non-conductive pollution occurs. Occasionally,

however, temporary conductivity caused by condensation

must be expected.

External circuits:

External circuits which are connected to the Auto Sash

controller, except mains connection, shall be insulated by

double or reinforced insulation from the mains.

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