AFA4000/2
Airflow Monitor / p.66
2.
Loosely fit the chain before fixing the motor plate to ensure the chain is correctly
tensioned and aligned.
6.3.2.3
Chain and sprocket counterweight drive
In the Counterweight Drive arrangement, the chain and sprocket drive system is used to
directly lift the sash counterweight. This is achieved by fitting a roller chain to the
counterweight and utilising a separate counterweight and freewheeling sprocket to
maintain the correct chain tension.
Figure 36: Typical chain and sprocket counterweight drive installation
6.3.3
Installing the chain and sprocket counterweight drive
1.
When the motor, chain and freewheeling sprocket has been fitted, manually open /
close the sash, to ensure that the motor drive is free running and that the chain is not
too slack or too tight.
2.
Fit the motor so that the drive sprocket is in line with the counterweight pulley.
3.
Fit one end of the chain to the counterweight or sash wire near to the counterweight.
4.
Fit the freewheeling sprocket in line with the drive sprocket.
Содержание AFA4000/2
Страница 1: ...AFA4000 2 Airflow monitor Installation and operating manual Issue 1 ...
Страница 50: ...AFA4000 2 Airflow Monitor p 50 Figure 21 AFA4000 2 typical connection diagram ...
Страница 51: ...AFA4000 2 Airflow Monitor p 51 Figure 22 AFA4000 2 AS typical connection diagram ...
Страница 52: ...AFA4000 2 Airflow Monitor p 52 5 4 Dimensions Figure 23 AFA4000 2 and AFA4000 2 AS dimensions ...
Страница 53: ...AFA4000 2 Airflow Monitor p 53 Figure 24 SM7 airflow sensor dimensions ...
Страница 64: ...AFA4000 2 Airflow Monitor p 64 Figure 34 Side views of a rack and pinion drive typical installation ...
Страница 87: ...AFA4000 2 Airflow Monitor p 87 Figure 61 Adjusting the personnel sensor beam angle away from the fume hood ...
Страница 90: ...AFA4000 2 Airflow Monitor p 90 6 10 Auto Sash System Control Box general wiring diagram ...
Страница 127: ...AFA4000 2 Airflow Monitor p 127 ...
Страница 140: ...AFA4000 2 Airflow Monitor p 140 Figure 69 Typical connection diagram ...
Страница 144: ...AFA4000 2 Airflow Monitor p 144 Figure 70 Connection diagram with RS232 485 converter ...