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Refer to the following if your freeze dry system fails to operate properly. If
the suggested corrective actions do not solve your problem, contact Labconco
for additional assistance.
Vacuum System
FreeZone
Triad
Freeze Dry Systems that are clean and dry and without
samples attached should reach a vacuum of 0.133 mBar within 30 minutes
and should achieve an ultimate vacuum of 0.040 mBar within 18 hours when
the refrigeration is operating. If the freeze dry system does not obtain a
satisfactory vacuum, perform the following maintenance tests.
Vacuum Pump
First make sure that the vacuum pump operates. If it fails to operate, check
the electrical connections of the freeze dry system to the power source and
then check the electrical connection of the vacuum pump to the freeze dry
system. If the vacuum pump has a power switch, make sure that it is turned
on. If the vacuum is not adequate when the vacuum pump is operating,
proceed with the following steps:
1.
Check the oil and ensure it is clear and clean. If the oil looks cloudy
or has any particulates, replace the pump oil. If the oil is excessively
dirty it may be necessary to flush the pump with clean oil several
times. To flush the pump, run the pump 5 to 10 minutes to allow the
oil to warm up. Drain the oil and refill with clean oil. Repeat as
necessary.
2.
Check the oil level in the pump. Ensure it is filled to the correct level.
3.
Check vacuum hose connections from the pump to the freeze dry
system and try running the unit.
