|  | Regular Tasks and Checks Bruker recommends to perform the Regular Tasks and Checks at least in the intervals given. | | | Water Cooling (primary water) | - ▪
- The correct operation of the primary water supplying the Dual Loop Heat Exchanger (DLHE) with cooling water is a prerequisite for cooling of the MR instrument. Thus, it is recommended for System Owners to check regularly and to maintain the primary cooling water supply as specified.
| | Water Cooling (secondary water) | - ▪
- Check filling state: The secondary water circuits are supported by a water tank in the Dual Loop Heat Exchanger (DLHE). The filling status is supervised by the DLHE. When the threshold is reached, an acoustic alarm as well as a red LED “Refill Tank” is provided at the DLHE. If the filling level drops below a second threshold, LED “Low Level” is turned on and the gradient pump is disabled. Refill water, see Filling Secondary Water Tank.
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- Check outgoing water tubes for flow (no bending).
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- Check for leakage / spilling of cooling water.
| Monthly Monthly Continuously | | - ▪
- Archive acquired data.
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- Check disk space.
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- Remove non-active user accounts.
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- Clean up the personal data, protocols, methods, coil configurations, etc.
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- Recording the BMU He level (Hlv) is recommended as regular check. If He level approaches 50%, contact your Bruker SLS office for refill.
| | BMU Heater Power
(BioSpec) | - ▪
- The BMU Heater power (Hpw) is an indication for correct operation of the refrigerator cold head. Recording is recommended as regular check. If < 10 %, contact your Bruker SLS office.
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- Press the BMU battery check button shortly and activate the menu with F1 followed by F9: Batteries are OK as long as no “battery alarm” occurs and the voltage displayed is > 20V.
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- Replace batteries, if the check fails, the voltage approaches 20V, or the batteries have not been replaced for 6 months. See Replacing BMU Batteries.
| Check monthly and replace latest every 6 months. | | - ▪
- Check filling state.
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- Refill with original sample fluids.
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- Replace liquid and gel phantoms according to expiration date.
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