Kewaunee Air Alert 300 Installation And Operating Manual Download Page 11 | Manualshive

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Kewaunee Air Alert 300 Installation And Operating Manual Download Page 11

11

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. Connection point for Visor micro switch. ( Switch contact to
close and remain closed in Visor Open condition )

b. Connection point for Visor proximity switch. ( Switch contact to

close and remain closed in Visor Open condition )

Note:- Use input a. OR input b. for the Visor alarm

Power supply --- low voltage DC power supply 15V DC

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Summary of Contents for Air Alert 300

Page 1: ...1 AIR ALERT 300 FUME HOOD VELOCITY ALARM Installation and Operating Manual Issue 01 February 2019 ...

Page 2: ...or Display Panel 9 2 2 General Description 10 2 3 External Connections 11 3 Functions and Operation 12 3 1 Configuration and Calibration 13 3 2 Start Up 13 3 3 Events and Actions 14 3 4 Quick Start Installation 15 3 5 Calibration Notes 17 4 Components 18 4 1 Airflow Monitor 19 5 Installation 20 5 1 Installation of Standard Components 21 5 2 Airflow Monitor Installation 22 5 3 Airflow Sensor Instal...

Page 3: ...3 1 SAFETY ...

Page 4: ...ng up the equipment or performing analysis or maintenance procedures strictly follow the instructions provided 1 2 Warning Notices Within this User Guide WARNINGS are used to highlight information or instructions that must be followed in order to avoid personal injury to yourself or other people in the vicinity eg switch off the mains voltage before any maintenance WARNINGS appear as below WARNING...

Page 5: ...must be done by a skilled person who is aware of the hazards involved Whenever circumstances arise that mean an Airflow Monitor may be unsafe make it inoperative In particular an Airflow Monitor may be unsafe if it Shows visible damage Fails to perform correctly Has been subjected to severe transport stresses Has been subjected to prolonged storage in unfavorable conditions 1 5 Environmental Condi...

Page 6: ...ctive conductor terminal is likely to make the equipment dangerous Intentional interruption of the protective conductor is prohibited WARNING If the mains power supply has to be replaced ensure that the replacement power supply is appropriately rated and approved for the intended use WARNING To prevent potential personal injury and damage to the equipment switch OFF all components in the system an...

Page 7: ...ion occurs Occasionally however temporary conductivity caused by condensation must be expected 1 8 EMC Compliance EC Directive The Airflow Monitor System is designed and tested to meet the requirements of the EC directive 89 336 EEC and 93 68 EEC and complies with the EMC standard EN61326 EMC standard for electrical equipment for measurement control and laboratory use and EN55011 ISM Class A RF em...

Page 8: ...8 2 Overview of the Airflow Monitor ...

Page 9: ...9 2 1 Operator Display Panel Enter and Set buttons for Calibration ENTER also used as Mute button for audible alarm LED Indicators ...

Page 10: ...tion Night Set back when the Night Setback input is activated the Audible alarm will be muted and the Green LED will flash on off ENTER the alarm has an Enter button this is multi functional as follows Press Enter momentarily when Low Air alarm is sounding will mute the alarm Press Enter momentarily when Visor Open alarm is sounding will mute the alarm and initiate a repeat timer that will re soun...

Page 11: ...n activation This input is configured as LOW AIR ALARM Visor Open Input a Connection point for Visor micro switch Switch contact to close and remain closed in Visor Open condition b Connection point for Visor proximity switch Switch contact to close and remain closed in Visor Open condition Note Use input a OR input b for the Visor alarm Power supply low voltage DC power supply 15V DC ...

Page 12: ...12 3 Functions Operation ...

Page 13: ... half time the normal operating value and this value is captured by the alarm and taken to be 150 The Low Air alarm will then activate if the airflow subsequently falls to 80 of the normal operating value See Quick Start Installation below for details of the Calibration procedures 3 2 Start Up When unit is powered up the following sequence of events occur 1 The 12V DC power is applied to the airfl...

Page 14: ... 1 sec Audible can be muted via Enter pushbutton this silences the alarm and initiates a repeat timer factory set to 5 mins After the delay time the alarm re sounds and can be re muted During this time the Red LED flashes on off Reset when Visor closed to safe position and input de activated Night set back When input configured as Night set back is activated Green LED on Flashing Audible alarm mut...

Page 15: ... the alarm point 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 on off 4 times every 1 sec c To initiate the alarm point calibration press and hold the ENTER and the SET buttons at the same time The unit will then sample the airflow for a 5 sec period durin...

Page 16: ... SET buttons to repeat the airflow sampling d The higher airflow calibration mode is indicated by both Red and Green LEDS flashing on off together with the audible alarm sounding Beep on off for 2 secs every 10 secs Adjust the fan speed until the face velocity rises to one and a half times the normal operating value used in a above using a calibrated instrument to check the value To initiate the h...

Page 17: ...nt calibration is ideal It is recommended that the fan is set to give an alarm velocity of 0 3 m sec 60 fpm minimum and 0 5 m sec 100 fpm maximum This considers a normal operating velocity of approximately 0 75 m sec 150 fpm Using the two point capture method is ideal for low air alarm calibration where the alarm point is required to indicate a low operating velocity typically 80 of the normal ope...

Page 18: ...18 4 Components ...

Page 19: ...19 4 1 Airflow Monitor components 1 Air Alert AA300 Airflow Monitor 1 Plug in type low voltage power supply with 5M Cable TEL ...

Page 20: ...20 5 Installation ...

Page 21: ...s 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 Fit the AA300 monitor to the Fume Hood using the cut out details provided with the unit Ensure that the monitor fits into the cut out before securing with the fixing screws 2 Fit the airflow sensor hose to the Fume Hood using the cut out and ...

Page 22: ...22 5 2 Airflow Monitor Installation Alarm Panel Dimensions Fume Hood Side Airfoil Front View Alarm Panel Cut Out ...

Page 23: ...od This tube and fittings is known as the vent kit The ideal position for the end of the 1 tube for most fume hoods is 4 back from the sash glass and 4 higher than the normal sash opening height through the inner side Adapter through Inner side wall Front of side post AFA500 Mounted on front of side post AA300 Mounted on front of side post Front of side post Adaptor through Inner side wall ...

Page 24: ...24 5 4 Typical connection diagram TEL ...

Page 25: ...25 6 Warranty ...

Page 26: ...epaid and will be returned at Seller s risk of loss Buyer s factory prepaid The foregoing is IN LIEU OF all other warranties and is subject to the conditions and LIMITATIONS stated herein NO OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR PARTICULAR PURPOSE OR MERCHANTABILITY IS MADE THE EXCLUSIVE REMEDY OF THE USER OR PURCHASER AND THE LIMIT OF LIABILITY OF SELLER FOR ANY AND ALL LOSSES INJURIES...

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