AFA4000/E
VAV Airflow Controller / p.74
7.
When the motor, chain and counterweight are fitted manually open / close the sash to
ensure the motor drive, chain and counterweight are free running.
6.2.4
Wire and pulley drive
With the Wire and Pulley Drive, the pulley motor drives the sash wire and can accept both single
and dual sash wire systems. The motor assembly is fitted in line with the sash wires and uses
two guide pulleys and a drive pulley.
The pulley drive is ideal for new fume hoods but can be retro-fitted if a longer replacement sash
wire can be fitted.
Figure 37: Typical wire and pulley drive installation
6.2.4.1
Installing the wire and pulley drive
The motor assembly can be fitted horizontally or vertically on either side of the fume hood, as
follows:
1.
Fit the motor assembly so that the guide pulleys are in line with the sash wire.
2.
Run the sash wire over the first guide pulley, around the drive pulley and then over the final
guide pulley.
When the motor drive has been installed, open / close the sash to ensure that the sash can
travel freely.
6.3
Sash light curtain
The Sash Light Curtain consists of three main components and associated wiring:
Summary of Contents for AFA4000/E
Page 1: ...AFA4000 E VAV Airflow Controller Installation and operating manual Issue 2...
Page 57: ...AFA4000 E VAV Airflow Controller p 57 Figure 22 AFA4000 E inverter control connections...
Page 58: ...AFA4000 E VAV Airflow Controller p 58 Figure 23 AFA4000 E damper control connections...
Page 59: ...AFA4000 E VAV Airflow Controller p 59 Figure 24 AFA4000 E typical connection diagram...
Page 60: ...AFA4000 E VAV Airflow Controller p 60 Figure 25 AFA4000 E AS typical connection diagram...
Page 62: ...AFA4000 E VAV Airflow Controller p 62 Figure 27 SM7 airflow sensor dimensions...
Page 96: ...AFA4000 E VAV Airflow Controller p 96 6 9 Auto Sash System Control Box general wiring diagram...
Page 158: ...AFA4000 E VAV Airflow Controller p 158...
Page 182: ...AFA4000 E VAV Airflow Controller p 182 Figure 79 Connection diagram with RS232 485 converter...
