4
11 - Timer Models
10 - Basic Models
13
Timer adjuster
B.
WIRING.
WARNING: THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE ISOLATED FROM
THE POWER SUPPLY DURING THE INSTALLATION / OR MAINTENANCE.
THE ACM FANS ARE DOUBLE INSULATED AND CARRY A MARK. THERE ARE NO EARTH TERMINALS
AND THESE FANS MUST NOT BE EARTHED.
1. Remove terminal box cover & screws and put to one side Fig. 9
2. Select and follow the appropriate wiring diagram (Fig. 10-11).
3. Check all connections have been made correctly and ensure all terminal connections and cable clamps are
securely fastened. (Fig 12)
4. The cable entry must be made using the cable grommet provided
5. Replace terminal box cover & screws Fig.13
6. Ensure the impeller rotates and is free from obstructions
(Timer models cannot be used with a speed controller)
Timer Adjustment.
The fan must be wired to a remote switch (e.g. light switch).
When switched ‘ON’, the fan will operate at the selected
speed, and will continue to run for a preset time after the fan
is switched ‘OFF’. The timer is factory set at 15 minutes
approx. The overrun time period can be adjusted from 3-25
minutes by altering the adjuster on the control PCB with the
use of a small flat bladed screwdriver. Fig 13
Before adjusting the timer, switch off the Mains Supply.
Remove the fan terminal box cover and retain screws
To INCREASE the operating time, turn the adjuster
CLOCKWISE
.
To REDUCE the operating time, turn the adjuster
ANTI-CLOCKWISE
.
Replace the fan terminal box cover.
9
13
12