Martin Christ Epsilon 2-4 LSCplus User Manual
Page 88
Freeze-dryer EPSILON 1-4 LSCplus
Freeze-dryer EPSILON 2-4 LSCplus
7 Malfunctions and error correction
88
Version 04/2014, Rev. 1.4 of 09/12/2014 • sb
Translation of the original operating manual
7.1.2.2 Aeration valve
A malfunction of the aeration 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").
• 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").
Pos: 173 /01 0 Univ ersal mod ule/L eerz eile @ 0\m od_ 120 211 624 450 0_0. docx @ 11 4 @ @ 1
Pos: 174 /20 0 Ch rist/3 60 G T-BA L abo r-Pilot (STANDARDMODU LE)/0 70 Stö run gen und Fe hlers uche 070 -00 10- 002 0-0 025 Dru ckste uerv entil @ 25\ mod _14 049 840 635 25_6 8.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").
Pos: 175 /01 0 Univ ersal mod ule/L eerz eile @ 0\m od_ 120 211 624 450 0_0. docx @ 11 4 @ @ 1
Pos: 176 /20 0 Ch rist/3 60 G T-BA L abo r-Pilot (STANDARDMODU LE)/0 70 Stö run gen und Fe hlers uche 070 -00 10- 002 0-0 030 Gu mmiv entile @ 25 \mo d_1 404 984 0645 88_ 68. docx @ 18 4223 @ 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.
Pos: 177 /01 0 Univ ersal mod ule/L eerz eile @ 0\m od_ 120 211 624 450 0_0. docx @ 11 4 @ @ 1
Pos: 178 /20 0 Ch rist/3 60 G T-BA L abo r-Pilot (STANDARDMODU LE)/0 70 Stö run gen und Fe hlers uche 070 -00 10- 002 0-0 040 Vaku um messso nde @ 2 5\mo d_1 404 984 065 691 _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.
Pos: 179 /01 0 Univ ersal mod ule/Seit enwec hsel @ 0\m od_ 120 211 624 4312 _0. docx @ 10 5 @ @ 1