VYRCOWhat you will learn
- Identify the circuit, measurement points and instruments before comparing values.
- A numerical difference needs reference conditions and compatible units.
- The record supports review; it does not prescribe cleaning or establish a blockage.
Who it is for: Process, mold and maintenance technicians.
Define the comparison you need
Write the question first: comparing a circuit with its earlier record, checking documentation after work or investigating a difference between periods. Each question needs a different reference. A table without an objective may collect many numbers without explaining which decision they support.
Identify the mold, revision, machine and date. Assign every cooling circuit an ID linked to an existing authorized diagram. If two names refer to the same connection, resolve the documentary equivalence. Do not disconnect or energize anything to complete a worksheet.
Record where and how each value was obtained
The linked DME source describes using flow, temperature and pressure to follow cooling conditions. To compare your records, identify which variable is available, where it is measured and which instrument supplies it. Do not assume two displays represent the same point.
Keep the unit, time and documented instrument status. If a reading comes from an existing indicator, record its identity. If a value is missing, do not reconstruct it from a visual impression. A reviewer must distinguish observed data, calculated values and missing information before interpreting the difference.
Build a reference with explicit conditions
Attach the documented fluid, process phase, circuit configuration and available thermal-supply context. A startup reading and a production reading may describe different situations. The record needs to show the distinction even when both values use the same unit.
Do not call the first available number “normal”. Identify where the reference came from and for which condition it was considered useful. If the measurement point, instrument or configuration changed, begin a new comparison or flag the limitation; do not imply continuity without evidence.
| Element | Fictional record A | Fictional record B |
|---|---|---|
| Circuit | C2, diagram revision B | C2, diagram revision B |
| Flow | 5.0 L/min | 4.6 L/min |
| Instrument | F2 | F2 |
| Phase | Documented production | Startup |
| Conclusion | Identified reference | Conditional comparison |
Describe the difference before its cause
An absolute or relative difference can be calculated when the reference and units are valid. Retain original numbers alongside the calculation. The result states how much the recorded data differ; by itself it does not establish what physically changed. If conditions are not equivalent, flag that before interpretation.
For an observable anomaly, link the photograph or event and assign review. Keep hypotheses such as restricted flow, measurement problems or supply changes separate. Responsible personnel must define the appropriate check and any intervention using their specific procedures. The comparison sheet is a record for that discussion, not an instruction to modify equipment.
Complete the loop after an intervention
Link the earlier record, work order, work actually performed and later measurement. Describe whether comparison conditions were retained and which limitations remain. Do not attribute improvement to one cause when several elements changed together.
A historical series may reveal recurring issues, but it must preserve circuit identity. If a downtime Pareto is used, record time actually associated with each category and avoid counting it twice. A cooling table and downtime analysis answer different questions; links between them should let someone review the full case without merging their conclusions.
Fictional example: context changes the question
A technician finds 4.6 L/min compared with a 5.0 L/min reference for C2. The difference is −0.4 L/min, or −8 % relative to that reading. Reviewing the record reveals that the second measurement was taken during startup. The report retains the calculation, flags a conditional comparison and requests context review. It neither declares a blocked circuit nor defines 8 % as acceptable or unacceptable.
Mistakes to avoid
- Comparing different measurement locations only because units match.
- Using an old reading as an acceptance limit without an approved source.
- Renaming a circuit and losing its history.
- Turning a percentage difference into a cleaning or adjustment recipe.
Checklist before continuing
- The circuit and diagram have identities.
- Every value has a unit, point, instrument and time.
- The reference retains its phase and configuration.
- The report separates differences, hypotheses and checks.
- Intervention and follow-up stay linked without unsupported causal claims.
Sources and review
- DME · FloSense
Context for identifying and tracking cooling variables; no universal acceptance criteria.
Accessed: 2026-10-10 - DME · CoolingCare
Reference for recording and comparing cooling circuit condition; equipment settings are not generalized.
Accessed: 2026-10-09
Original general guidance by VYRCO based on the listed references. Examples are fictional. Editorial review does not validate your process. To correct an item, identify the article, date and source at info@vyrco.com.