Loading Angle Rotors; Loading Swing Out Rotors - Hermle Z 446 K User Manual

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OPERATION

2.1.2 Loading Angle Rotors

Rotors must be loaded symmetrically and with equal weight. The adapter may only be loaded with

the appropriate vessels. The weight differences between the filled vessels should be kept as low as

possible. Therefore, we recommend to weigh with a balance. This reduces the wear of drive and the

acoustic operating noise.

Each rotor indicates what the maximum capacity is per hole.

Attention:

For safety reasons, all places on certain rotors must be occupied with equal weight during

centrifugation (See Figure 14.).

Figure 13:

Regardless of the centrifuge model, this applies to the following angular rotors:

221.51 (4 x 500 ml)

221.21 (6 x 250 ml)

220.78 (6 x 85 ml)

221.18 (6 x 85 ml)

221.20 (4 x 85 ml)

Loading of the buckets / vessels must be done in accordance, to Figure 16.

It is allowed to operate e.g. a 4-place-rotor with 2 loaded buckets only. The loaded buckets must be

opposite of each other. Make sure that the unloaded buckets are placed inside the rotor,

(see Figures 15 and 16).

In principle, swing out rotors cannot be removed during operation, until all buckets or racks

are placed inside the rotor.

The bolts of the rotor must be greased with the HERMLE Rotorgrease (Order No. 38-5656).

The sample tubes have to be filled evenly, by eye, and set into the drillings or tube racks. The weight

difference of the loaded buckets should not exceed 1.0 g.

ATTENTION!

Swing Out Rotors can be removed during operation, only if all locations are filled in with

either 4 buckets or 4 microtiter carriers – do not mix up buckets and microtiter carriers!!

WRONG

Z446K_V1.22_eng

Figure 14:

RIGHT

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