Service
Edition: 04 Servicing Schedule
18.04.02/he/AH Page: 2 - 1 Legend RT
Multifuge 3S-R/3L-R
Service
2.1 Servicing Schedule (yearly procedure recommended)
2.1.1 Maintenance Routine without Dismantling the Centrifuge
2.1.1.1 Electrical Installation and Safety
• Switch OFF the centrifuge and disconnect the unit from power, check voltage supply and mains
fusing (16 Amps, slow blow characteristic)
• Check condition of plug and wall socket - replace defective parts (customer’s responsibility)
• Check cord condition and fixing / connection - replace or refit it
• Check condition of instrument socket and replace it in case of bad contacts
2.1.1.2 Location and Mechanical Installation
• Check the base (ground, table, lorry with lockable wheels etc.) for resonance-free and stable
conditions
• Check for a well ventilated place and sufficient distances to walls or adjacent equipment, without
exposition to direct sunlight
• Check the leveling of the centrifuge drive with use of a spirit level
2.1.1.3 Lid Tumbler Mechanism and Safety Device
• Connect the centrifuge to power and switch ON
• Check for correct automatic lid closing and self-acting lid opening - if in disorder, readjust lid,
swivel hinges, and/or locking devices
• Check the rubber gasket for lid’s and bolt’s sealing and replace, if damaged
• For checking the electronically safety circuit: start the centrifuge, let it shortly run and stop it, the
lid must not be unlocked by the microprocessor as long as the speed is more than 60 rpm - if
safety circuit is out of function, replace main board
2.1.1.4 Cleanliness of Spin Chamber and Motor Casing
• Open the lid and remove the rotor (for loosening turn the T-handle Allen key (5mm) in arrow
direction - see rim of rotor chamber)
• Clean the spin chamber with a dry and absorbent cloth (remove all dust and moisture - see also
section for Cleaning)
• Check the cleanliness of the motor flange and take care of the annular slot around the motor shaft:
penetrating fluids can damage the upper spindle bearing or electronics, remove fluids with an
injector and/or absorbent paper
2.1.1.5 Rotor and Accessories Condition and Sealing, bellows
• Check the condition of rotors and accessory parts (especially all supporting or stressed partitions):
the rotor and/or accessory parts must not be used any longer, if there are visible traces of
mechanical damage or rust
• Check the condition of rotor and/or accessory sealing and replace them in case of malfunction
• Bellows of gas lid stays have to be greased upside down with glycerin (part no. 70902649) once a
year.
2.1.1.6 Rotor Fixing and Drive Spindle
• Check the perfect condition of the collet chuck and replace it in case of malfunction (thread is worn
out, horizontal grooves etc.)
• Check the condition of the drive cone: the centrifuge must not be used any longer, if the drive
cone is damaged (e.g. bend or it’s bearings are worn out)
