Cooling Devices
Magnet of the USR and US/R type are equipped with a dual loop heat exchanger cabinet. On its primary side, the dual loop heat exchanger is connected to the process water and has two secondary cooling circuits. One cooling circuit is used for the gradient cooling and one for the compressor of the magnet refrigeration, which is located in the lower part of the cabinet.
The cooling circuit of the magnet refrigeration is continuously running while the operation state of the cooling circuit for the gradient cooling is controlled by the spectrometer control cabinets. The control cabinet is turned on automatically as soon as the gradient amplifiers are switched in the operation mode »ON«. Spectrometer operation without running gradient cooling is not allowed. During normal operation, no user interaction is required!
The water filling level and the water flow rate must be controlled in regular intervals, see maintenance.
Magnets of the US type are equipped with an air-water chiller for gradient cooling. The operation state of the cooling circuit for gradient cooling is controlled by the spectrometer control cabinets. It is turned on automatically as soon as the gradient amplifiers are switched in the operation mode “ON”. Spectrometer operation without running gradient cooling is not allowed. During normal operation, no user interaction is required!
The water filling level as well as the water flow rate must be controlled in regular intervals, see maintenance.
- water can condensate,
- the water temperature can fluctuate and the MR instruments operation can become unstable,
- the time to stabilize the instrument after tuning on the water cooling can be longer.
- Do not change the core temperature of the gradient chiller or of the dual loop heat exchanger below 18° C.
