JULABO CF40 Cryo-Compact Circulators - Manual (Page 27)

Cryo-Compact Circulator
27

This message appear every 4 seconds.
An acoustic signal sounds in regular intervals.
 Compressor does not work.
After a short cooling interval, the compressor motor will be
automatically reconnected and the message "E 21" no longer
appears.
 Even after short switch off and switch on of the device by
pressing the main power switch, the compressor might start up
after a slight delay.
Error message E21 will also appear during that time.
If the unit cannot be returned to operation, contact an authorized
JULABO service station.
Disturbances that are not indicated.
Overload protection:: a) for cooling machine
b) for pump motor
Mains fuses:
The mains fuses on the rear of the unit may easily be exchanged
as shown on the left.
Fine fuses (16a)– T 16 A, 250 V~ , D5 x 20 mm
Warning:
Before exchanging the fuses, turn off the mains power switch and disconnect
the power plug from the mains socket!
Only use fine fuses with a nominal value as specified.
Example:
Manufacturer Supplier Type Order No.
Schurter Schurter G-fuse insert SPT
T16A 5x20mm No. 0001.2516