JULABO LH 50 Highly Dynamic Temperature Control Systems - Manual (Page 32)

Preparations
32
5.7.1. Filling of external, closed systems
ALARM
CODE 14
Section 1
 Connect the unit to a mains power socket (see page 31) and
turn on the unit with the mains power switch (1).
During the self-test all segments of the VFD-Info-Display, all
control indicators and the DIALOG-DISPLAY light up.
After the self-test, the VFD-Info-Display signals low liquid level
alarm. >CODE 14< and a signal tone sounds.
 Press (5.1) to open the filling funnel (5). Slowly pour in bath
liquid into the opening (5.2) and observe the liquid level
display.
 Watch the level indication

. During the filling
procedure 3 or 4 steps of the level indication can light-up, in
the end they should light-up.
Section 2
Pump
>Pump OFF
Mode:Sys close
 Turn the unit off and on again with the mains power switch (1). Wait
until the self-test is completed.
 Press the key
to start the automatic filling process.
As soon as the pump pressure indication in the 3 rd line of the VFD-
Info-Display
(„P X.XX“) has scaled up to at least 0.1 bar, the tempering liquid is
pumped into the external system. In intervals of 10 seconds bath
liquid is pumped into the external system - air purge is carried out in
the breaks.
Notice: The filling mode has to stay activated for at least 5 minutes in
order to fully de-air the system.
 The liquid level in the unit falls.
In case of a WARNING >CODE 40< again slowly fill in tempering
liquid into the opening (5.2).
In case of a ALARM >CODE 14< return to the final condition of
section 1 and restart section 2.
 If the liquid level display remains unchanged after some minutes,
complete filling according to the application task.
See page 31 - marker "HT" or "TT".
 Press
to finish the automatic filling process.
 The message >SELECT SYSTEM
adjustment in the menu >Pump<.
In the sub >Pump< the unit has to be set on >Mode:< >sys close< .
(see page 33 Adjusting Mode: )
 The unit is now ready for operation .