8/66
3.6 Imbalance sensor (B2.2)
• An electronic sensor monitors the imbalance.
• The imbalance sensor and the speed sensor (B2.1) are together in one housing,
screwed to the bottom of the motor.
• Imbalance is detected only in running mode (starting, centrifuging and braking).
• If impermissible imbalance is detected, the drive switches off and the rotor slows
down braked until it stops.
3.7 Motor-driven lid lock (A3)
• The lid can be opened only if the Electronics U320 (A1) has detected rotor standstill.
• By pressing the key
STOP / OPEN
the lid opens motor-driven.
• The motor locks the lid only if both lid brackets have actuated both switches in the lid
lock and the rotor has standstill.
• The centrifuge can only be started when the lid is closed.
3.8 Cooling system
The cooling system is a hermetical system.
The cooling system consists of the following components:
• Compressor
• Cooling tubes around the centrifuge chamber (evaporator)
• Condenser
• Dryer
• Fan
• Temperature sensor T1 (B1) and overtemperature switch in the centrifuge chamber
• Temperature sensor T3 (B3) on the condenser
In the housing of the temperature sensor T1 also the overtemperature switch is
included. With centrifuges with cooling the drive switches off, when the temperature is
> 60°C.
The refrigerant will be cooled down with a fan. The speed of the fan is controlled
dependent to the temperature at the condenser.
When opening the lid of the centrifuge, the cooling system switches off. The cooling
system is controlled dependent to the speed of the rotor.
To Next Page
Loading...
Need help?
General
