A hot runner mold can produce acceptable samples at the toolmaker and still arrive with an incomplete electrical handover package. The receiving plant needs to connect the correct controller, understand each zone and compare commissioning results with the original baseline. A photograph of the controller display does not answer all of those questions.
For procurement teams, the practical objective is a traceable record linking the installed components, wiring drawings and test results to the exact mold being shipped. Agree the document list before the final trial. Electrical inspection and commissioning must be performed by qualified personnel under the equipment manufacturer’s procedures and the plant’s isolation and safety rules.
Ask for a numbered drawing that identifies every nozzle and manifold heating zone. Use the same numbers on the wiring schematic, connectors, cables, controller configuration and inspection report. If a zone serves a component rather than a cavity, make that relationship explicit. A cavity number alone may not identify the complete heating circuit.
The map should distinguish heater circuits from temperature-sensor circuits. Record the installed thermocouple type, polarity convention and connector pin assignments. Check the receiving controller specification against the actual system rather than assuming that physically compatible plugs have matching wiring.
Mastip’s published hot runner installation procedure includes heater resistance, thermocouple resistance, heater insulation testing and a check that controller zones correspond to the intended components. Its values and methods belong to the systems covered by that document. Use the current instructions for the installed equipment rather than copying a generic threshold into a purchase specification. See the Mastip installation procedure.
Build a report with one row per zone. Ask the supplier to identify the test method, instrument, date, measured value, applicable acceptance criterion and result. Include the electrical drawing revision. This gives the receiving technician a useful comparison if a cable, heater or sensor is replaced later.
A test report also needs a clear boundary. State whether testing covered the hot half alone, the assembled mold, the extension cables or the complete controller-and-mold combination. Keep an incomplete or excluded test visible instead of allowing a general acceptance signature to conceal it.
The handover review should cover supply requirements, controller model, zone capacity, cable lengths and connector details. Ask who provides each item and who checks compatibility. Where a valve-gated system is included, document its control interface separately, with the applicable manufacturer instructions.
Record any adaptations made during the trial. Temporary cables or a borrowed controller should not silently become the basis of final acceptance. If production will use different equipment, identify the remaining commissioning checks and their owner before shipment.
List installed heater and sensor part numbers, approved replacement references and the location of the relevant manuals. Distinguish purchased spares from items merely recommended for future stock. Link each replacement item to the zone map so maintenance staff can identify it without interpreting an old quotation.
Preserve the final configuration in a controlled handover folder. A readable PDF is useful at the machine, while editable drawings help with authorized future changes. Record who may revise the electrical documents and how updated copies will reach the receiving plant.
Electrical handover should sit beside the mechanical trial records, not replace them. For molds with driven release mechanisms, also review the thread and release-sequence acceptance plan. Approve shipment against the agreed evidence package, with unresolved commissioning work clearly identified.
