TEL AFA 500 Operating instructions

Airflow Monitor
AFA500
helping you create a safer environment in your workplace
a breath of fresh air.....

AFA500 Series Airflow Monitors
General Description
The AFA500 series of airflow monitors and controls are designed to ensure the Safety of the users of:
FUME CUPBOARDS
FUME HOODS
BIOLOGICAL SAFETY CABINETS.
The AFA500 is an entry level airflow monitor that is designed for applications where airflow velocity indication is not required. The
AFA500 is available with either a built in or remote unique airflow sensor that is used to measure Face Velocities or Duct Velocities.
The sensor has no inherent drift and will provide stable readings over many years of operation without re-calibration.
AFA500
AFA500 Airflow monitor suitable for Standard airflow applications
• Audio visual airow alarm with integral or remote Airow sensor
• 2 Point or Alarm Point Capture Pushbutton calibration
• Low air alarm relay output
• Relay input for Night Setback to mute audible alarm
• Relay input for Sash High alarm
• Permanent or momentary alarm mute

Alarm Range
Field Set up
Accuracy
Airflow Sensor
Relay Output
Low Air Alarm Delay
Relay Input
Com Port
Sash High Alarm
Night Setback
Display
Alarm Indication
Horn Silence
Mounting
Monitor Operating
Temperature range
Airflow sensor
Operating temperature
Airflow sensor
Working temperature
Storage temperature
Agency Listings
Hazardous Area
(Remote Airow sensor
or pressure switch)
AFA500
0.15-2.00m/s (30-400fpm)
Integral or remote SM6
Airflow sensor
Single or 2 Point calibration
Alarm point Capture
Velocity +/-5%
Integral Airflow Sensor
or remote SM6
1 Low Air Alarm
Fixed 5 Seconds
2- Sash High / Setback
RS485 Monitor
Conguration only
Yes with alarm repeat
Yes – relay input
2 x LED’s
(Safe/Alarm)
Red LED with
Audible alarm
Temporary or
Permanent
Fully ush (Mk2)
Semi ush (Mk3)
13-30°C
55-86°F
15-25°C
59-77°F
Ambient +25°C/77°F
-40-65°C
-40-150°F
CE
RoHS
Gas group IIC
Temp Class T6
With Atex certied I.S
Zener Barriers
AFA500 Series Specification
Specications

!
!
TEL!AFA!500!MK3!FUME!HOOD!MONITOR!—!INSTALLATION!AND!OPERATION!GUIDE!
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STARTUP!
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ALARM!PANEL!DIMENSIONS!
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DIMENSIONS!

$!
AFA500!!
mounted!on!front!
of!side!post!
Fume!hood!
outer!skin!
Fume!hood!
inner!skin!
1!inch!
!hose!
1!inch!
female!adapter!
1!inch!
male!
bush!
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FRONT!POST!INSTALLATION!
CONNECTION!
DETAILS!
SIDEWALL!SENSOR!PLACEMENT!
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!
There!are!four!ways!to!silence!the!audible!alarm!on!an!AFA!500!fume!hood!or!bio9safety!cabinet!
alarm.!
!
./'0)1234546'1"#)!
When!the!monitor!is!in!alarm!mode,!press!the!enter!button.!The!horn!will!remain!off!for!the!
duration!of!the!alarm!condition.!When!the!monitor!returns!to!safe!mode,!the!alarm!will!be!re9
enabled!for!the!next!time!the!monitor!has!an!alarm!condition.!
!
If!the!user!wants!to!use!a!temporary)mute)with)
a)ringback)feature!—!wherein!the!audible!
alarm!will!resume!after!a!set!time!period!—!
this!can!be!accomplished!by!connecting!two!
wires!from!the!relay!output!terminals!to!the!+!
and!SW!terminals!on!the!sash!high!input!relay.!
Once!this!connection!is!made,!an!low!air!alarm!also!will!initiate!the!sash!high!alarm.!If!a!user!
pushes!the!enter!button!for!a!temporary!mute,!it!will!re9sound!after!five!minutes.!
!
7/'8)415%)%#'1"#)!
When!the!monitor!is!in!normal!operation!mode,!press!and!hold!the!set!button!for!10!seconds.!
The!audible!alarm!will!beep!three!times!to!indicate!the!alarm!is!disabled.!When!the!airflow!is!in!
the!normal/safe!condition,!the!green!LED!will!flash!to!indicate!the!alarm!has!been!disabled.!
When!the!airflow!is!in!a!fail/unsafe!condition,!the!red!light!will!blink!and!no!horn!will!sound.!To!
undo!the!permanent!mute,!press!and!hold!the!set!button!for!10!seconds.!The!audible!alarm!will!
beep!three!times!to!indicate!the!alarm!is!enabled.!
!
9/':$&(#';)#<5=>!
This!is!a!“temporary”!mute!activated!by!electric!input.!The!monitor!has!two!dry!contact!relay!
inputs!on!the!back.!To!enable!night!setback,!wire!an!external!element!(a!building!automation!
system!or!the!hood!power,!the!fan!power,!the!room!light,!etc.)!into!the!correct!relay!inputs.!
Then,!when!the!external!element!changes!states!(turns!on/turns!off,!etc.)!it!sends!a!signal!to!the!
relay!to!switch!from!open!to!closed.!When!the!monitor!enters!night!setback!mode,!the!audible!
alarm!is!disabled.!If!there!is!sufficient!airflow,!the!green!light!will!blink.!If!there!is!an!air!fail!
condition,!the!red!light!will!flash.!Then,!when!the!external!element!changes!states!back!to!the!
original!condition,!the!relay!switches!back!and!the!alarm!returns!to!normal!operating!mode!(the!
horn!is!re9activated!automatically!and!the!green!light!returns!to!solid!state).!
!
To!make!sure!everything!is!set!properly,!activate!the!blower!switch!on!and!off!while!looking!at!
the!monitor!to!make!sure!the!mode!is!changing!as!intended.!
!
?/'@A$%>B'23C)4!
This!approach!involves!wiring!the!monitor!so!when!the!power!to!an!external!source!(such!as!the!
hood!light)!is!shut!off,!the!monitor!powers!off!as!well.!This!can!be!done!by!wiring!the!outlet!that!
powers!the!monitor!to!lose!power!whenever!the!light!loses!power!(kind!of!how!a!TV,!DVD!
player,!etc.,!all!shut!off!when!turning!off!the!community!surge!protector/power!strip).!The!
monitor!will!remember!its!calibration!when!power!is!restored.!
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!
TEL AFA 500
TROUBLESHOOTING GUIDE
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!
Holland Safety Equipment • 726 McKinley Ave., Libertyville, IL 60048 • Phone: [phone] • Fax: [phone]