JULABO FW95-SL Ultra-Low Refrigerated Circulators - Manual (Page 28)

Operating procedures
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6.2.2. Switching on the cooling machine
Switching on:
• Switch on the cooling machine using the switch (1b) .

Control of the cooling machine F8 1 , F9 5 , FW9 5 :
With the mains switch (1b) turned on, the circulator automatically
switches the cooling machine off and on.
• It is switched off if:
- the current working temperature is increased by > 30 °C (cooling is
not required).
- the heater operates at full power (> 800 W) for longer than 5
minutes.
• It is switched on if:
- cooling is necessary to maintain the bath temperature.
After switch-off, the cooling machine automatically switches on only
after a delay of 5 minutes to protect the cooling compressor.

To save energy, turn off the cooling machine with the mains switch
(1b) whenever cooling is not required.

Control of the FP 8 9 c ooling ma c hine :
The mains switch is turned on. After pressing the start/stop button, the
cooling machine is automatically switched on or off by the circulator. In
the start mode of the circulator, the cooling machine runs continuously.
Immediately after starting the cooling machine, the output of the system
is reduced to a minimum value for a defined period in order to
equilibrate the cooling system. Afterwards the output of the cooling
machine is ramped up to the capacity required by the circulator.
A control of the capacity limitation subject to the temperature of the bath
is stored in the circulator. This is used to increase the operational
reliability and does not affect the maximum capacity of the cooling
machine.
6.3. Start - Stop

Start:
• Press
key.
The actual bath temperature is displayed on the VFD COMFORT-
DISPLAY. The circulating pump starts with a slight delay.
Stop:
• Press
key.
or
Keep key pressed.
The VFD COMFORT-DISPLAY indicates the message "OFF".