Thermo Electron SORVALL RC3BP, Operating Instructions Manual

Page: 51 / 64

Maintenance SORVALL

Centrifuges
5-2
Drive Spindle
Wipe the spindle with a soft cloth before a rotor is installed to
reduce the chance of the rotor sticking to the spindle. Periodi-
cally, wash the spindle with warm water.
Cabinet
Clean the enameled cabinet panels with a household wax cleaner.
Use a mild, nonalkaline detergent and water to clean the top
deck and the chamber door.
Refrigeration System
To maintain the efficiency of the refrigeration system, the air
filter should be cleaned every three to six months (see Cleaning
the Air Filter, below).
Door Gas Springs
Periodically check that the two door gas springs are functioning
properly by opening the chamber door and making sure it
remains open. The gas springs counterbalance the weight of the
door and hold it in the open position. Also, check that the gas
spring bracket is not cracked. If the chamber door will not stay
in the open position or the gas spring bracket is cracked, contact
your local Service Representative.
Lubrication
All components are prelubricated and require no further lubrica-
tion. The refrigeration unit is hermetically sealed and the ball bear-
ings in the gyro-action drive assembly and the centrifuge motor are
permanently lubricated.
Cleaning the Air Filter
1. Unplug the centrifuge power cord.
2. Using a 9/16 wrench, raise the two locking stabilizers (this will
lower the center caster). Then, roll the centrifuge to an area to
access the bottom of backpack.
3. From the left side of centrifuge, grasp the handle on the air filter
assembly and pull downward (see figure 5-1). Remove the air
filter assembly.
WARNING
The door gas springs must
be checked periodically for proper
functioning. If gas pressure is not suf-
ficient the door will not stay open and
possible injury could result.
!