JULABO FPW50-MA Refrigerated and Heating Circulators - Manual (Page 40)

Safety installations, warning functions
40
8.1.1. Early warning system, low level protection
Warning:
For refill always use the same bath fluid type that is already in the bath.
Bath oils must not contain any water contaminants and should be pre-heated
to the actual bath temperature!
Explosion hazard at higher temperatures!
(patented)
This low level protection is independent of the control
circuit and is divided in two sections.
1. Switch in stage 1 recognizes a defined
fluid level
.
An audible warning (interval tone) sounds and on
the MULTI-DISPLAY (LED) the message "E 40"
appears.
Refill bath fluid!
2. Switch in stage 2 recognizes a low fluid level
.
If stage 2 of the low level protection device
(according to IEC 61010-2-010) is triggered, a
complete shutdown of the heater and circulating
pump is effected.
A continuous alarm tone sounds and a message
>CODE 01< appears on the MULTI-DISPLAY
(LED).
Turn off the unit with the mains switch, refill bath fluid and turn
the unit on again!
3. Float
4. Circulating pump
5. Heater