Sigma 3-16K, Руководство по эксплуатации

Страница: 57 / 69

Operating Manual SIGMA 3-16K, page 57 of 69
03/06
6.3 Rotor Pins
The trunnion pins of the rotor should always be greased as only this ensures
evenly swinging of buckets and thus quiet run of the centrifuge (part no. 70284
Grease).
6.4 Glass Breakage
In case of glass breakage all glass particles must be carefully removed. Rubber
inserts have to be cleaned carefully and possibly be replaced. If a problem has
occured, the following has to be considered:
Glass particles in the rubber cushion will cause glass breakage again.
Glass particles in the centrifuge chamber will cause metal abrasion due to the
strong air circulation. This dust will not only pollute the centrifuge chamber, the
rotor and the material to be centrifuged but also damage the surfaces of the
accessories, the rotors and the centrifuge chamber.
In order to totally remove the glass particles and the metal dust from the rotor
chamber, it is advisable to grease the upper part of the centrifuge chamber with
e.g. Vaseline. Then the rotor should rotate for some minutes at a moderate
speed. The glass and metal particles will now collect at the greased part and can
easily be removed with a cloth together with the grease. If necessary repeat this
procedure.
6.5 Care and Cleaning of the Condenser
A lamellar condenser is used to cool the compressed refrigerant. It is installed in
the back part of the centrifuge and cooled with air.
The location for the centrifuge should therefore be as clean as possible, ie. dirt,
dust etc. should not prevent the air from streaming through the condenser and
obstruct heat transfer. Dust on the condenser pipes and the lamella will reduce
heat exchange and decrease the performance of the refrigerator.
The condenser should therefore be regularly checked for dirt and cleaned if
necessary. Generally blowing of the lamella with compressed air from inside and
outside is sufficient (or a simple hoovering with a vacuum cleaner).