Martin Christ Epsilon 2-10D LSCplus User Manual

Page 91

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Freeze-dryer EPSILON 2-10D LSCplus

7 Malfunctions and error correction

Version 04/2013, Rev. 1.5 of 16/12/2014 • sb

91

Translation of the original operating manual

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7.1.2.2 Aeration valve, media drain valve

A malfunction of the aeration valve or the media drain valve may have
several causes. One potential source are contaminants such as product
residues within the valve.
• Switch the freeze-dryer off and disconnect the mains plug.
• Clean the valve (see chapter 8.1.1.3 - "Aeration valve, media drain

valve").

• Put the freeze-dryer into operation again.
If there is still a leakage, the freeze-dryer must be checked by qualified
specialist personnel (see chapter 7.3 - "Service contact").

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Pos: 187 /20 0 Ch rist/3 60 G T-BA L abo r-Pilot (STANDARDMODU LE)/0 70 Stö run gen und Fe hlers uche /07 0-0 010 -00 20- 0025 Dr uckste uerv entil @ 25\ mo d_1 4049 840 635 25_ 68.d ocx @ 184 209 @ 4 @ 1

7.1.2.3 Pressure control valve

A malfunction of the pressure control valve may have several causes.

NOTE

The inspection of the valve must be carried out by qualified specialist
personnel (see chapter 7.3 - "Service contact").

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Pos: 189 /20 0 Ch rist/3 60 G T-BA L abo r-Pilot (STANDARDMODU LE)/0 70 Stö run gen und Fe hlers uche /07 0-0 010 -00 20- 0030 G ummiv entile @ 2 5\m od_1 404 984 064 588 _68. docx @ 18 422 3 @ 4 @ 1

7.1.2.4 Rubber valves

In order to identify a leaking rubber valve, the valves must be checked
individually:
• Remove the rubber valve and seal the connection at the drying

chamber with a rubber stopper.

• Check the tightness under vacuum until the leaking valve has been

localised.

• Clean the valve or replace it if necessary.

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Pos: 191 /20 0 Ch rist/3 60 G T-BA L abo r-Pilot (STANDARDMODU LE)/0 70 Stö run gen und Fe hlers uche /07 0-0 010 -00 20- 0040 Vaku um messs ond e @ 2 5\m od_ 140 498 4065 691 _68 .docx @ 18 423 7 @ 4 @ 1

7.1.2.5 Vacuum sensor

Vacuum sensors have a limited service life and can be ordered as spare
parts (e.g. VSP62/63, order no. 125468).
Functional test:
• Connect the vacuum sensor directly to the suction side connector of the

vacuum pump.

If a final pressure of at least 0.011 mbar is reached (with a vacuum pump
that has reached its operating temperature), the sensor and the vacuum
pump are OK.

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