Cooke & Lewis CLEF2SS-C Manuel page 17

Operation
GB IE
Using The Mechanical Timer (Fig 1)
Once the thermostat controls are in the desired position, turn the knob
clockwise to the maximum position and then turn it anti-clockwise to the
desired time; at the end of this set time the buzzer will sound. The timer only
indicates the end of the set time, but it does not stop the function being
used.
0
50 10
40 20
FIG 1
30
17