Malfunctions And Error Correction; General Malfunctions - Christ Alpha 3-4 LSCbasic Operating Manual

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7

Malfunctions and error correction

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7.1

General malfunctions

Type of error
No indication on the display
The touchpanel does not react at all
or it does not react correctly
The password input fails
Insufficient vacuum
Leakage in the media drain valve
Leakage in a rubber valve
Version 11/2018, Rev. 1.2 of 05/03/2019 • sb-pe
Translation of the original operating manuel
Malfunctions are displayed in the dialogue box "Process & equipment
messages" (see chapter 7.2 - "Process and error messages"). An acoustic
signal sounds when an error message is generated.
•
Eliminate the source of the problem (see the following chapter).
•
Acknowledge the error message.
Possible reason
•
No power in the mains supply
(see chapter 7.1.1 - "Power
failure").
•
Power cord is not plugged in.
•
Fuses have tripped.
•
The mains power switch is set
to off.
•
The sensitivity of the touchpanel
is misadjusted.
•
The password is not correct.
•
Incorrect connection of the
small flange connection(s).
•
Dirty or damaged lid or door
seal.
•
The ground-in stopper of the
attached drying chamber is not
installed correctly.
•
The media drain valve is soiled
with drying residues or wool
particles from cleaning cloths.
•
The O-rings are worn
•
The valve is soiled.
Freeze-dryer Alpha 3-4 LSCbasic
7 Malfunctions and error correction
Correction
•
Check the mains power supply
fuse.
•
Plug in the power cord correctly.
•
Check the on-site fuses
•
Switch mains power switch ON.
•
Contact the service department
(see chapter 7.3 - "Service
contact")
•
Inform the administrator.
•
If you have lost the administrator
password: contact the service
department (see chapter 7.3 -
"Service contact")
•
Loosen the connection. Place
the centring ring with the inner
sealing ring in a centred manner
between the flange connections
and connect it with the clamping
ring. Ensure that the centring
ring neither slips out of place nor
gets jammed.
•
Clean the lid or door seal and
replace it if necessary.
•
Grease the ground-in stopper
evenly and over the entire
sealing surface with vacuum
grease.
•
Clean the media drain valve (see
chapter 8.1.3 - "Aeration valve,
media drain valve")and replace it
if necessary.
•
Replace the O-rings.
•
Check the valves individually
(see chapter 7.1.2.4 - "Rubber
valves")
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