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Summary of Contents for Kewaunee Air Alert 300
- Page 1 AIR ALERT 300 FUME HOOD VELOCITY ALARM Installation and Operating Manual Issue 01 February 2019...
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Page 2: Table Of Contents
Table of Contents Safety Safety Practices Warning Notices Precautions General Operating Conditions Environmental Conditions Electrical Safety Electrical Protection EMC Compliance Warning Labels Overview of the Airflow Monitor Operator Display Panel General Description External Connections Functions and Operation Configuration and Calibration Start Up Events and Actions Quick Start Installation... -
Page 3: Safety
1. SAFETY... -
Page 4: Safety Practices
1.1 Safety Practices This document describes the general safety practices and precautions that must be observed when operating the Airflow Monitor. This advice is intended to supplement, not supersede, the normal safety codes in the user’s country. The information provided does not cover every safety procedure that should be followed. -
Page 5: General Operating Conditions
1.4 General Operating Conditions The Airflow Monitor and equipment have been designed and tested in accordance with the safety requirements of the International Electrotechnical Commission (IEC). 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 73/23/EEC. -
Page 6: Electrical Safety
1.6 Electrical Safety The Airflow Monitor and associated equipment are designed to protect the user from potential electrical hazards. This section describes some recommended electrical safety practices. Lethal voltages are present at certain points within the equipment. When the equipment is connected to mains power, removing the equipment covers is likely to expose live parts. -
Page 7: Electrical Protection
The electrical safety of the equipment is likely to be impaired if: • It has any signs of visible damage. • If it has been subjected to prolonged storage in unfavourable conditions. • If it has been subjected to severe stress during transportation. 1.7 Electrical Protection Observe the following electrical protection precautions: •... -
Page 8: Overview Of The Airflow Monitor
2. Overview of the Airflow Monitor... -
Page 9: Operator Display Panel
2.1 Operator Display Panel LED Indicators Enter and Set buttons for Calibration. ENTER also used as Mute button for audible alarm... -
Page 10: General Description
2.2 General Description All systems comprise of the following components :- 1 – AA300 Airflow Monitor, 1 – AC power supply If the Sash Alarm System option is ordered there will also be a sash micro switch or proximity switch. If the Remote Airflow Sensor is ordered there will be remote sensor provided Operator Features --- the alarm has the following operator features :- Safe LED -... -
Page 11: External Connections
2.3 External Connections Input 1 --- volt free relay input – ( close contact to activate the input ) This input is configured as :- NIGHT SETBACK Output R1 --- volt free relay output - ( contact closes on activation ) This input is configured as :- LOW AIR ALARM Visor Open Input --- a. -
Page 12: Functions And Operation
3. Functions & Operation... -
Page 13: Configuration And Calibration
3.1 Alarm Configuration / Calibration The alarm is supplied with a factory configuration. The only part of the configuration that can be changed is the setting for the Visor Open repeat timer time delay -- if required this can be factory changed prior to ordering the monitor. The alarm has two modes for the calibration of the airflow alarm point. -
Page 14: Events And Actions
3.3 Events / Actions Safe airflow • Airflow above alarm level ( e.g. > 80 fpm ) • Green LED on Low airflow • Airflow below alarm level for longer than the low air delay time ( 5 secs) • Red LED on ( Not flashing ) •... -
Page 15: Quick Start Installation
3.4 Quick Start Installation Follow the instructions below for installing and commissioning the unit. :- Before connecting the unit, it is important to decide on the type of calibration that is to be used on the installation. The two methods are described in section 1.2 Alarm Configuration / Calibration above. Fit the alarm to the Fume Hood using the cut-out details provided with the unit --- see page 11 Plug in the power adapter to a Mains AC power socket and connect the flying lead to the alarm unit --- see... - Page 16 Calibration continued:- Two Point Capture ( With jumper J2 not connected ) a. Set the exhaust fan to the normal airflow level. b. Press and hold the Enter button for 5 secs to go into the Calibration mode. This is indicated by both Red and Green LEDS flashing on/off together with the audible alarm sounding ( ‘Beep’...
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Page 17: Calibration Notes
3.5 Calibration Notes The two calibration methods are intended to give the installer two options for calibrating the alarm. Using the alarm point capture method it is necessary to adjust the air velocity on the Fume Hood using a mechanical damper ( or fan speed controller ) to the desired alarm point and this is sampled by the unit. It is necessary to re-adjust the air velocity back to the normal operating value. -
Page 18: Components
4. Components... -
Page 19: Airflow Monitor
4.1 Airflow Monitor components 1 – Air Alert AA300 Airflow Monitor 1 – Plug in type low voltage power supply with 5M Cable... -
Page 20: Installation
5. Installation... -
Page 21: Installation Of Standard Components
5.1 Installation of standard components The following section outlines the installation of the various components of the Airflow monitor. As the size and format of individual Fume Hoods varies considerably, specific instructions are not possible, though the principles outlined below should remain valid in all cases. The airflow monitor can be mounted on either side of the Fume Hood 1. -
Page 22: Airflow Monitor Installation
5.2 Airflow Monitor Installation. Alarm Panel Dimensions Fume Hood Side Airfoil (Front View) Alarm Panel Cut Out... -
Page 23: Airflow Sensor Installation
5.3 Airflow Sensor installation. AA300 AFA500 Mounted on front Mounted on of side post front of side post Adaptor through Inner side wall Adapter through Inner side wall Front of Front of side post side post INSTALLATION NOTES :- The back connection spigot of the sensor is designed to accept a 1” OD tube which should be connected to the inner chamber of the fume hood. -
Page 24: Typical Connection Diagram
5.4 Typical connection diagram... -
Page 25: Warranty
6. Warranty... -
Page 26: Limitation Of Warranty And Liability
Seller. This LIMITATION OF WARRANTY AND LIABILITY may not be amended or modified nor may any of its terms be waived except by a writing signed by an authorized representative of the Seller. KEWAUNEE SCIENTIFIC CORPORATION ph. 704 873 7202...
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