RVL — Reservoir Very Low alarm — secondary circuit header tank critically low on the Oxford 2195 cooler cabinet
Philips CT error code, reported by the Oxford 2195 Cooler Cabinet (MRI gradient/primary water cooling).
What RVL means
On Eclipse 1.5T and Polaris and Apollo CT systems, status code RVL indicates: Reservoir Very Low alarm — secondary circuit header tank critically low on the Oxford 2195 cooler cabinet. The code originates in the Water Cooling System (Oxford 2195 Cooler Cabinet) section of the Oxford 2195 Cooler Cabinet (MRI gradient/primary water cooling). Severity level alarm-high (Alarm (high) — critical coolant reservoir level).
Reported action: Reservoir Very Low is the escalated (above Reservoir Low) alarm for the secondary circuit header tank. Per the commissioning procedure, remove the filling cap at the rear of the cooler and refill with DISTILLED water only, or distilled water/glycol pre-mixed up to 50% by volume, until the level indicator lamp goes off; do not overfill, as this causes water to escape from the top of the tank. If any water is spilled, isolate power at the 2194 and clean the spillage before resuming..
Shown as an alarm-status abbreviation on the Picker 3020 controller of the Oxford 2195 Cooler Cabinet, documented for the Philips/Picker Eclipse 1.5T MRI (and shared, per the same table, by Polaris and Apollo systems). Not confirmed by this document for other cooler models.
Full troubleshooting for RVL
The complete diagnosis, cause tree, and step-by-step remedy for the Water Cooling System (Oxford 2195 Cooler Cabinet) subsystem are documented in the FSELIB Activion16 (TSX-031A) service manual — re-authored, web-first, with real figures.
Open the Activion16 service manualRelated Water Cooling System (Oxford 2195 Cooler Cabinet) codes
Source: Philips/Picker Eclipse 1.5T MRI service documentation — Theory and Troubleshooting of Oxford 2195 Cooler Cabinet (Diagnostic Tools and Information, Maintenance). Reference information re-authored by FSELIB — not a copy of the OEM manual.