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Atlas Copco QAS 500

Atlas Copco QAS 500
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- 67 -
4.5.2 General
When no button is pressed the display will return
to its default mode - normal time display.
When setting the time, holding the buttons (2) or
(3) pressed, the time will change more rapidly.
With this mini-clock three pre-set times can be
set. Each pre-set time is deactivated after the set
heating period has ended. It has to be activated
again for each new heating action.
4.5.3 Settings
Commisioning
After connecting the power, all symbols on the
display will blink. Now the actual time has to be
set before the heater can be operated.
Press button (1); time blinks. Set time with
buttons (2) or (3).
Press button (1); time is displayed, colon blinks.
Setting the time
Press button (1) longer than 3 sec.; time blinks.
Set with buttons (2) or (3).
Briefly press button (1); time is displayed, colon
blinks.
Setting heating period
Press button (1) longer then 3 sec.; time blinks.
Wait till the display indicates "setting heating
period"; heating symbol and time blink. Set
heating period (10 to 120 min) using button (2) or
(3).
Press button (1); time is displayed, colon blinks.
Setting the preset time
Press button (1) once, twice or three times to
select pre-set time 1, 2 or 3.
The display shows e.g. pre-set time 1 and symbol
1.
Set the pre-set period with buttons (2) or (3).
Press button (4) to activate or deactivate the pre-
set period.
When activated, the symbol "ON" and symbol "1,
2 or 3" appear.
Operation
Switching ON the heater
Press button (4). The heating period lasts
...minutes.
The display shows: remaining heating time and
symbol (7).
Switching OFF the heater
Press button (4). The heater will run idle for about
3 minutes.
The display shows: actual time.
Continuous operation
Press and hold button (3), then press button (4);
now the heater will be operating till button (4)
(heater off) is pressed.
Activating / deactivating pre-set time
Select pre-set time 1, 2 or 3 by pressing button (1).
Activate the selected time by pressing button (4).
The display shows: symbol "ON" as well as the
selected pre-set time, "1, 2 or 3".
If you do not press the button within 5
seconds the mode is changed to “setting
heating period”.
The preheating time at -25°C is about 90
minutes.

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