6 | Operation
BÜCHI Labortechnik AG
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Operation Manual Recirculating Chiller F-305 / F-308 / F-314
u
Check the coolant fill level from time to time during operation, see Chapter 3.2.3
"Fill level indicator", page 12.
u
If a defined operating period and automatic shut-off (eco mode) has not been set
by an external control system (Interface I-300), press control knob/STOP button
(on Interface I-300) to end the chilling process.
Locking the set temperature
The recirculating chiller has a locking function that prevents the set temperature being
inadvertently altered.
u
To lock the set temperature, press and hold the control knob until the padlock
symbol (3) appears on the display.
u
To cancel the lock function, press and hold the control knob again until the pad-
lock symbol disappears.
6.3
Operating chiller without control system (interface)
1
1
1
4
1
5
1
2
1
3
Fig. 18: Operating the recirculating chiller (F-305)
1 On/Off switch
4 Filler cap for coolant *
2 Display
5 Coolant fill level indicator
3 Control knob
* On the F-308 and F-314, the filler cap for the coolant is on the back of the device.
Precondition:
R
Device is ready for operation (see Chapter 6.1 "Preparing for operation", page 29).
u
Switch on the device by means of the On/Off switch (1).
u
Check the fill level of the coolant tank (see Chapter 7.3 "Checking the coolant
level", page 32).
u
Set the required temperature using the control knob (3) and confirm the setting by
briefly pressing and releasing the button.
u
Start/stop the chilling process by pressing the control knob.
