Julabo 9410191.7, Руководство по эксплуатации

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Operating controls and functional elements
16
3.1. Description of the Magnum principle
e.g. double-sided glass vessel).
Operating:
The operation of the temperature
system and the indication is
effected via the local operating
board (2, 3).
Filling :
First connect the external
consumer (32). The menu option
>Mode< is set on >Fill<.
The unit is filled at the filling
opening (5) via the internal
reservoir (5a). The bath liquid
flows further into the heat
exchanger (20).
The filling valve (25) represents
narrows. Therefore the filling
should be done slowly.
The air from the heat exchanger
(20) escapes via the venting valve
(24).
In a first step bath liquid is filled in
until the level indication
indicates 3 or 4 segments (see –
Filling volume- page 24).
Then, by pressing the key an automatic filling and venting mode with activation of the circulating pump (23)
is started. In intervals the tempering liquid is pumped via connection (10) into the external system (32) and led
back into the heat exchanger (20) via connection (11). At the end of the filling process the menu option >Mode<
has to be set on >Sys close<.
Working:
In case of a closed external system the filling valve (25) remains open and allows a change in volume of the bath
liquid caused by temperature during operation. In case of emergency it has to be possible that the expanding
bath liquid can drain off at the overflow (12) into a suitable vessel.
The temperature system will be cooled with water (31). Connect the cooling water to the lead in for cooling water
(14). Lead the outflow for cooling water (13) into the locally provided drain respectively backflow.
The temperature system is started with the key
. The heating (21), the cooling aggregate (22) and the
circulating pump (23) start according to the desired adjustments at the operating board (2, 3). In the line to the
pumpe exit (10) the pump pressure (29) and the actual temperature of the internal control sensor (28a) is
permanently measured. If the temperature control has to be effected externally a Pt100 external sensor (28b)
has to be connected and switched over to external control at the operating board.
Safety:
In the internal reservoir (5a) there are the level sensor (26) as well as a safety sensor (27b). The safety sensor
(27a) as high temperature protection is located directly at the heater (21).
If the external circuit is interrupted (e.g. with a shut-off valve), an emergency circuit is maintained via an internal
Bypass (30).