Freeze-dryer Epsilon 1-4 LSCplus
Freeze-dryer Epsilon 2-4 LSCplus
8 Maintenance and service
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Version 04/2014, Rev. 2.13 of 01/12/2021
• sb
Translation of the original operating manual
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8.3
Maintenance schedule
for freeze-dryers with an oil-sealed vacuum pump
System/
component
Detail / part
before start
daily
inspection
replace
operation
calibration
Door gasket:
clean and undamaged
X
replace
anually
Door locks, hinges: burr-free
X
X
X
Shelves:
surface clean and undamaged
X
X
Chamber door pane, sight glasses:
clean
X
X
Chamber: dry and clean
X
X
Door cover at the stainless steel
door: tight
X
Leakages
X
X
Noise emission during operation
X
X
Static seals: O-rings, clamp, KF
X
anually
Loose wire
X
Framework: corrosion
X
Pump: oil level
X
X
X
Pump: oil condition
(colour, contamination)
X
X
X
oil change
Oil mist filter: emission of oil mist
X
X
X
Oil mist filter: oil level
X
cleaning
Final vacuum of instrument
X
Residue / Particles inside oil casing
x
Oil leakages at pump
x
x
gasket after
10 years
Vacuum leakage test
X
Ice formation
X
Heat exchanger
(air cooled machine)
X
X
cleaning
Noise emission above average
X
Soleniod valves
X
Ice condenser temperature:
low end
X
Cooling water control valves
X
X
Mechanical components: function
X
Hydraulic system:
maximum pressure reading
X
Hydraulic system:
oil in reservoir
X
Hydraulic system: condition of the
hoses (oil leakages)
X
Hydraulic system:
cylinder travel speed
X
Temperature sensors
X
anually
Vacuum sensors
X
anually
Pressure sensors
X
anually
Electrical rack:
condition of the components
X
General wiring
X
Power reading of components
X
Alarm beeper
X
PLC backup battery (LSCplus)
5 years
Electrical
installation
Vial stoppering
system
Periodical maintenance
Drying chamber -
operator side
General
condition
Vacuum system
Refrigeration
system
Inspection
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