1. Freeze the equipment and site boundaries before dispatch
A delivery date is useful only when the site team knows which version of the generator is coming. Record the approved model, enclosure, electrical output, cooling arrangement and relevant options. Link the installation drawing to that configuration and identify who can approve a change. A drawing for a similar unit is useful background, but the contractor needs the dimensions and interfaces of the purchased equipment.
Use a boundary schedule to distinguish the supplied package from work carried out locally. An exhaust silencer may be supplied loose, while its supports, roof penetration and final connection belong to the installation contractor. A base fuel tank may be included, while a bulk tank and transfer system are separate. Resolve these boundaries before either side orders its remaining equipment.
If a revised enclosure drawing moves the cable entry, check it against the ordered cables and the planned foundation opening before approval. Have the equipment supplier confirm the new interface and the site contractor confirm the corresponding route. Put the accepted drawing revision in the order record so neither party builds from the superseded version.
2. Check the delivery route and the maintenance route separately
Give the logistics provider the actual shipping dimensions, weights and handling instructions, including loose accessories. Review the route from unloading to the final position: gates, turning space, floor levels, temporary openings and the proposed handling equipment. Confirm whether silencers, discharge sections or other parts travel separately and who assembles them. A shipping outline and an operating arrangement can describe different shapes.
Ask the site designer to check the installed position after nearby equipment, cable routes and barriers are included. Service doors must open and routine tasks must remain accessible. Replacement of a large component requires a different review from a filter change. Where future removal is required, identify the removable panels, lifting access and route out of the room.
Consider an illustrative project where the generator fits through a new wall opening, but the final pipework crosses the only removal route. The delivery plan works while the maintenance plan fails. Review both routes on the coordinated layout before closing the opening or accepting the final piping arrangement. This is a planning example, not a reported project.
3. Coordinate cooling air, combustion air and exhaust
Ask for the cooling arrangement and installation limits applicable to the selected package. The site review should follow air from its outdoor inlet through the equipment to the discharge. Include louvers, screens, acoustic treatment, ducts and nearby structures. Their physical opening sizes alone do not establish whether the required flow can pass within the permitted resistance.
The enclosure also belongs in this review. Caterpillar explains that an enclosure can introduce airflow restriction and warm the air before it reaches the radiator. A room designer therefore needs to know which temperatures and restrictions the supplier used for the offered arrangement. Outdoor ambient temperature and radiator inlet temperature should be identified separately when they differ.
Arrange the discharge so the site designer can assess hot air returning to an inlet, including interactions between nearby units. Ask who checks ventilation operation with the room and equipment in their intended operating condition. Leaving a service door open during a demonstration should not substitute for evidence that the installed ventilation arrangement works.
Handle engine exhaust as a separate interface. Request the applicable backpressure limit, connection details and instructions for supporting the exhaust arrangement. Have the responsible designer include the proposed pipe route and silencer in the assessment. Identify who supplies the flexible connection, supports, weather protection and required site checks. A cooling airflow drawing does not settle the exhaust scope.
Caterpillar guidance on the ambient capability of enclosed generator sets
Compare open, silent and containerized generator arrangements
4. Confirm fuel connections and auxiliary services
Describe the planned fuel system, not just the tank capacity. Identify the tank supplying the engine, any remote storage, the transfer equipment and the destination of returned fuel. Ask for the selected engine’s supply and return restrictions and relevant fuel temperature requirements. Pipe length, elevation and routing can affect the arrangement that the equipment supplier must review.
Separate the required running time from fuel circulation requirements. A consumption figure helps establish the fuel budget, while the transfer and supply arrangement needs the appropriate flow and interface data. Agree who defines usable fuel, filling arrangements, level signals and the response to an unavailable transfer pump. The site designer should address containment and applicable local requirements.
List auxiliary electrical services as individual interfaces. These may include battery charging, heaters or ventilation controls where specified. Identify their supply voltage, connection point, availability during normal and outage conditions, and the party providing protection and cabling. Do not assume that ordering an accessory automatically provides its building supply or controls.
5. Allocate electrical and control responsibilities
Provide the equipment supplier and site electrical designer with the same single-line diagram and intended operating sequence. Confirm voltage, frequency, phase arrangement, neutral requirements and the generator output connection. Establish who checks the cable entry, termination space, cable support and available fault information against the actual installation.
An automatic-start controller, a transfer switch and paralleling equipment perform different jobs. Record which equipment is included and which party coordinates the interfaces. Identify remote-start requests, breaker or transfer status, alarms and any permissive signals needed by the agreed sequence. Terminal numbers and signal characteristics should come from approved drawings for the delivered versions.
Assign protection, earthing and neutral arrangements to the responsible electrical designer and the relevant equipment parties. Do not choose a switching arrangement from a generic article or assume that a standard wiring diagram covers every site. The installation review must account for the actual distribution system, intended operating modes and applicable project requirements.
A quotation that says installation is by others still needs to identify who supplies the terminal schedule and who approves the transfer sequence. Ask the supplier to list its drawings and connection data, and ask the local contractor to list the wiring, site supplies and checks it will provide. Resolve any unassigned item before the equipment arrives.
Compare generator configuration and supply scope before ordering
6. Release site work against a responsibility table
Attach the interface register to the order and fill in the contracted organization for each task. For every drawing or data sheet, record its revision and the date the receiving party needs it. Use the table below to check whether a supplier deliverable has a corresponding site decision.
| Interface | Equipment information to obtain | Site decision or deliverable |
|---|---|---|
| Position and access | Final operating and shipping drawings; handling instructions | Logistics and site teams approve unloading, final placement and maintenance access |
| Cooling and exhaust | Package cooling data, allowed restrictions and exhaust interfaces | Mechanical designer coordinates routes, supports and verification scope |
| Fuel and auxiliaries | Supply/return limits, tank interfaces and accessory requirements | Site team confirms storage, transfer equipment and auxiliary supplies |
| Power and controls | Output connections, terminal schedule and sequence information | Electrical and controls parties coordinate wiring, protection and transfer tests |
| Handover | Applicable manuals, final revisions and agreed equipment records | Commissioning lead checks site readiness and records remaining actions |
Review this register at a defined point before dispatch. If an essential site decision remains open, record its effect on delivery, placement and commissioning. Some work can progress using an agreed preliminary drawing; other work needs the final interface. Make that distinction explicit so a provisional drawing is not mistaken for construction approval.
7. Agree how the installed arrangement will be checked
Distinguish equipment checks before dispatch from verification after installation. Factory records can support the agreed equipment acceptance scope. They cannot establish the performance of site-built ducts, exhaust supports, fuel transfer equipment or building transfer controls that were not present. Define what each stage checks and which records follow the delivered unit.
Before energizing or starting equipment, the responsible parties should complete their applicable installation checks. The commissioning plan should then address the agreed operating modes and interfaces, with the required personnel and measurements identified. Acceptance criteria must refer to the chosen equipment, project requirements and applicable instructions, rather than values borrowed from another installation.
Collect the final drawings, relevant settings records, manuals and unresolved actions in a handover pack. Link them to the installed unit and configuration. If an on-site change affects an interface, update the responsible drawing and record the accepted change. The value of the pack is that the operator can identify the installation actually handed over.
Questions buyers ask before delivery
Which drawings must be final before site work starts?
Identify the decisions that would be costly to change, such as foundation openings, cable entries and ventilation or exhaust penetrations. Have the responsible designer confirm which equipment dimensions and interfaces must be fixed for that work. Mark preliminary drawings clearly and record the approval needed before they are used for construction.
What if the site layout changes after the generator is ordered?
Send the revised layout to the equipment supplier and the affected site designers before approving the changed work. Identify what moved and ask which drawings, connections or performance assessments need revision. Record any agreed equipment change and its effect on price or schedule; do not assume that the original installation review still applies.
Who supplies the test load and site services for commissioning?
Name the party providing the agreed test load, fuel, auxiliary power and personnel. Confirm whether the planned site loads will be available or whether separate test equipment is needed. Put those items in the commissioning scope and quotation so they are ready for the agreed test date.
Send a coordinated installation brief to GOODWIND
Include the proposed generator duty and electrical requirement, site layout, access constraints, cooling and exhaust concept, fuel arrangement and transfer-system boundary. Identify the local designers and contractors and state which drawings or interfaces are still open. Ask for the equipment information needed to close those decisions and for a written description of the proposed supply scope.
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