7 Maintenance and repairs
63
R-220 Pro Continuous Operation Manual, Version A
7 2
Regular service and checks
To maintain the system in good working order the checks described in this section should be
performed regularly Defective or worn out parts must be exchanged directly to ensure safe use and
optimal efficiency
7 2 1
System tightness
To evaluate the system tightness, run the leakage test according to the I-300 Pro operation manual
A greater pressure rise indicates a leakage In such a case, recheck all EasyClamp connections, seal
rings and valves for proper seating
7 2 2
Sealings and hoses
Check for wear and clean the vacuum seal at least every six months
Check all other seals and hoses for wear at least yearly
X
Exchange seals with scratches or other harms directly
NOTE
• To prevent damaging the seals never apply grease or touch them with sharp objects
• To prolong the lifetime of the seals, rinse them routinely with water or ethanol to remove possible
contamination with sample material
• Dry the cleaned seals with a soft, lint-free cloth
• PTFE seals need a 10 hours run-in period to reach their optimum tightness condition This is
normal for a PTFE seal
7 2 3
Glassware and clamps
Clean all glass components after a distillation process to prevent cross-contamination
•
Inner surfaces
X
Cleaning can be done by distillation of ethanol or acetone (product residues must be soluble by
the distilled cleaning agent)
•
Outer surfaces
X
Cleaning of outer parts can be done manually with warm water and a commercial cleaning
agent (e g mild soap solution)
•
Smaller parts such as clamps can be cleaned in an ultrasonic bath
X
Visually check all glass components and clamps for damages subsequently
NOTE
• It is recommended to decalcify the cooler spiral regularly to prevent calcification
• Regularly flush the cooling spiral with cleaning detergent to remove algae
7 2 4
Housing, heating bath, cables and accessories
Check the housing, cables and accessories for visible defects (cracks, kinks etc ) Clean housing parts
regularly with a damp cloth Soapy water can be used as cleaning agent
