Refrigeration System; Vacuum Sensor - Christ Alpha 3-4 LSCbasic Operating Manual

Pos : 215 /200 Chris t/360 GT-BA Labor-Pil ot ( STAND ARDMODULE)/080 W artung und Instandhaltung/080-0010- 0091 Kältesystem Labor (natürliche, brennbare Kältemittel) @ 70\m od_1583479957518_68.docx @ 744828 @ 3 @ 1
8.1.8

Refrigeration system

DANGER
Pos : 216 /010 Univ ers almodul e/ Leerz eile @ 0\mod_1202116244500_0.docx @ 114 @ @ 1
→ Pos : 217 /200 Chris t/360 GT-BA Labor-Pil ot ( STAND ARDMODULE)/080 W artung und Instandhaltung/080-0010- 0120 Vak uumm esss onde @ 25\m od_1404984105610_68.docx @ 184433 @ 3 @ 1
8.1.9

Vacuum sensor

NOTE
Pos : 218 /010 Univ ers almodul e/ Seitenwechs el @ 0\mod_1202116244312_0.docx @ 105 @ @ 1
Version 11/2018, Rev. 1.9 of 01/12/2021 • sb
Translation of the original operating manuel
Risk of explosion due to refrigerants
The natural refrigerants used are highly flammable and can form an
explosive mixture if their concentration in the ambient air is sufficiently
high.
There is an explosion hazard.
•
Work on the refrigeration system of the freeze-dryer must only be
carried out by qualified specialist personnel who have been trained to
handle flammable refrigerants!
•
Ensure good ventilation and make sure that no ignition sources (e.g.
soldering iron, welding equipment) are present!
The refrigerant circuit is a closed system. Only certified and qualified
persons are authorised to perform work on the refrigeration system!
Please refer to the separate operating manual of the vacuum sensor!
The vacuum sensor has only a limited service life.
•
The vacuum sensor is maintenance-free.
•
Remove any soiling on the outside with a cloth.
Capacitive vacuum sensors
Measurement drift due to long-term use, soiling or sudden aeration may
occur.
•
Capacitive vacuum sensors must be adjusted at least once per year.
Depending on the actual conditions of use, shorter adjustment intervals
may be necessary.
Freeze-dryer Alpha 3-4 LSCbasic
8 Maintenance and service
95 / 117