TEL AFA1000/E MK2 Installation & Calibration Manual

Startup

The AFA1000/E must be eld-calibrated once the
room air supply and exhaust is proportionally
balanced. When the unit is powered up, the
following sequence of events occurs:

1. The alarm performs a self-test of its
functions, LEDs and audible alarm
(approximately 3 seconds).

2. At the end of the delay, the unit will do
one of two things:

a. If the controller has been calibrated, the

unit enters normal operating mode (displays
airow velocity, LED’s and audible alarm
enabled).

b. If the controller has not been calibrated,

the unit will display “ Requires set up, press
Enter to continue”.

Installation &

Calibration Guide

Airow Controls

AFA1000/E MK2

Calibration

1. Press Enter from the “Requires set up” screen or if the controller
is in the Run screen Press and Hold the Enter button for 5 seconds
until the Main Menu is displayed.

2. Using the + / - buttons select SET UP, then select CONFIGURE, then
enter the password (the factory default password is 0-0-0-0), press
Enter to continue.

3. Using the + / - buttons select ECON CONFIGURE, then select
MANUAL / AUTO and press Enter, select MANUAL and press
Enter to continue.

4. Open the sash to the normal operating height and measure the
face velocity using a calibrated instrument. Using the + / - buttons
adjust the Manual output so that the face velocity is equal to the
design velocity, e.g. 0.50m/sec (100fpm) , then press Enter, then
select DONE and press Enter again.

5. Using the + / - buttons select SET UP, then select CALIBRATION,
then enter the password (the factory default password is 0-0-0-0),
press Enter to continue.

6. With the sash open to the normal operating height again measure
the face velocity using a calibrated instrument. Using the + /

-buttons enter the measured face velocity then press Enter, the
controller will then sample the airow for 5 seconds.

7. If the airow sample is unstable the controller will display
“Deviations too High”, follow the instructions to repeat the
sample or quit the calibration.

Temperature Electronics Ltd. Unit 2, Wren Nest Road, Glossop SK13 8HB UK

T. [phone] F. [phone] E. [e-mail] w. www.tel-uk.com

Installation &

Calibration Guide

Temperature Electronics Ltd. Unit 2, Wren Nest Road, Glossop SK13 8HB UK

T. [phone] F. [phone] E. [e-mail] w. www.tel-uk.com

8. If the sample is accepted, lower the sash by half and
measure the face velocity using a calibrated instrument.
Using the + / - buttons enter the measured face velocity
and press Enter, the monitor will then sample the airow
for 5 seconds.

9. If the calibration is successful the controller will return the
Main Menu, select RUN to go to normal operating mode
and check the velocity reading is accurate and stable.

10. If the airow sample is unstable the controller will

display “Deviations too High”, follow the instructions to
repeat the sample or quit the calibration.

11. The controller will display “Increase higher airow

sample” if the second sample value is too close to the
rst value entered, close the sash a little and repeat
the higher sample. The minimum dierence between
the samples that the controller will accept is 0.3m/
sec (60fpm).

12. The controller will display “Sensor di too low” if the

controller doesn’t detect any dierence in the sensor
output between the 2 airow samples, check that the
sensor hose is connected and repeat the calibration.

13. If the calibration is stable and accurate Press and

Hold the Enter button for 5 seconds until the Main
Menu is displayed.

14. Using the + / - buttons select SET UP, then select

CONFIGURE, then enter the password (the factory
default password is 0-0-0-0), press Enter to continue.

15. Using the + / - buttons select ECON CONFIGURE, then

select MANUAL / AUTO and press Enter, then select
AUTO and press Enter to continue, then select DONE
and press Enter.

16. The controller will return to the MAIN MENU, select

RUN to go to normal operating mode.

Calibration Tips

1. Ensure that the sensor hose is connected correctly at the
side wall and rear of the sensor.

2. Ensure that the extract fan is running and the Fume
Cupboard is balanced before calibrating the monitor.

3. Take extra time (at least 15 to 20 seconds) to wait for the
airow to settle before capturing the airow samples.
This will minimize the chance of a calibration error due
to turbulence or uctuations.

4. Avoid movement in front of the Fume Cupboard whilst
calibrating the monitor.

5. The Low and High air samples must be at least 0.3m/sec
(60 fpm) apart to calibrate the monitor. This is to avoid
inaccuracy in the calibration sue to insucient dierence
between the samples. The minimum dierence can be
changed in the “Low High di” parameter in the
Cal Cong menu.

6. Do not use fully open and fully closed sash positions for
the calibration points, the recommended positions are
normal operating height (e.g. 500mm 20”) for the rst
sample and approximately half the sash opening (e.g.
250mm 10”) for the second sample.