There is no single list of clay trap spares that every shooting ground should always hold because the correct inventory depends on the exact models and variants being operated. The most useful starting point is a record of components that are compatible with several machines, relatively inexpensive, known to wear or fail occasionally and capable of returning an important trap to service. Depending on the fleet, this could include confirmed pusher springs, rollers, friction components, relays, switches, plugs, sockets, terminals, fire buttons and selected motor-service items.

Compatibility must be established before any product is placed in stock. A component should be labelled with its complete Promatic part number, description, compatible trap models and any relevant terminal or variant information. General labels such as “relay” or “toggle switch” are not precise enough because visually similar components may have different specifications or connections.

The ground should also distinguish routine operational stock from specialist parts. Main throwing springs, throwing arms and other components associated with stored mechanical energy should not be treated as ordinary do-it-yourself items. They may be held for planned work if their specification has been confirmed, but fitting must follow the correct safety guidance and may require an experienced service engineer.

The best inventory is therefore built from the ground’s fleet register, maintenance history and operational priorities. Review it regularly and adjust quantities according to actual usage rather than buying a generic collection of parts that may never fit the machines on site.

The appropriate quantity depends on how frequently a component is used, how many traps share it, the operational effect of a failure and how quickly replacement stock can normally be obtained. A useful starting calculation is the expected number required during the normal replenishment period, plus a safety buffer reflecting the importance of the affected equipment. This produces a more useful answer than applying the same quantity to every type of spare.

For example, a low-cost pusher component used across ten heavily operated traps may justify several units in stock. A more expensive assembly used by one reserve machine may require only a documented source and an agreed ordering procedure. A component that could close a complete competition layout may deserve a larger contingency than one affecting a stand that can be substituted easily.

Where maintenance records are limited, begin conservatively using the experience of grounds staff, model commonality and the forthcoming shooting programme. Record every part issued, the machine on which it was fitted and whether the repair solved the problem. After six or twelve months, the ground will have enough evidence to refine minimum and maximum quantities.

Stock should also be reviewed before busy weekends, competitions, corporate days and seasonal peaks. Reordering should occur when the minimum level is reached, not after the final unit has been used. This provides time to confirm compatibility and obtain the correct replacement without creating an avoidable operational emergency.

Some Promatic components may be used across more than one compatible model, which can make a shared spares inventory very efficient. However, interchangeability must be confirmed from the part reference, manual, product information or advice from Promatic. It should never be assumed simply because two traps look similar or perform the same shooting function.

Model families can contain different variants, production generations or electrical arrangements. Switches may use different terminal types, connectors may have different pin arrangements and mechanical parts may differ in dimensions, mounting points or operating characteristics. Even a small suffix within the part number can identify a meaningful difference. A component that can be fitted physically is not necessarily suitable electrically or mechanically.

Create a compatibility record for every stocked part. This should list the complete part number, confirmed models, relevant serial or production information and any restrictions. Where two components appear similar but are not interchangeable, keep them in separate labelled compartments. Photographs can support recognition, but the confirmed reference should remain the controlling information.

If compatibility cannot be established from the relevant Promatic manual or online product description, contact Promatic before ordering or fitting the component. Provide the exact trap model, serial information, current part number and clear photographs. Confirming this once and adding it to the fleet register prevents future uncertainty and allows shared stock to be used confidently across the appropriate machines.

Clay trap spares should be kept in a clean, dry, secure and organised area where they are protected from moisture, contamination, impact and accidental use. Original packaging should be retained wherever practical because it protects the component and preserves the manufacturer’s identification. Electrical switches, relays and connectors require particular care: protect terminals, avoid damp conditions and do not place heavy mechanical items on top of delicate components.

Every shelf, container or compartment should display the complete part number, component description, confirmed compatible models and current stock quantity. Similar-looking parts that are not interchangeable must be separated. Do not place several unlabelled springs, switches or connectors in one box and expect staff to identify them by appearance during a breakdown.

Used, damaged or removed components should be stored separately and marked clearly. A failed part retained for comparison can be valuable, but it must not be mistaken for unused stock. The same applies to items awaiting inspection, warranty return or disposal.

Access should be controlled through a basic issue system. Whenever a part is removed, record the date, machine, fault and person completing the work. Carry out periodic physical counts and investigate discrepancies. Older stock should be inspected for deterioration, and references should be checked if the fleet changes. Good storage is not only about protecting the component; it preserves traceability so the correct part can be selected safely and efficiently when it is required.

A service engineer should be used whenever the cause of the problem has not been positively identified, the repair exceeds the competence of available staff or the work involves significant stored mechanical energy, safety systems or complex electrical diagnosis. Having a replacement component in stock does not establish that the component has failed or that an untrained person can fit it safely.

Main throwing springs, throwing arms and associated assemblies require particular caution because a trap may retain mechanical energy even after its battery or power supply has been disconnected. Staff must follow the disarming and isolation procedure in the correct manual. If the instructions, tools or competence required are unavailable, the machine should remain out of service until suitable assistance is obtained.

Professional inspection is also advisable when the same component has failed repeatedly, several related symptoms appear at once or a new part does not resolve the original problem. Repeated failure can indicate an underlying timing, alignment, adjustment, wiring or operating issue. Continuing to replace the visible casualty may increase cost without correcting the cause.

Promatic offers machine servicing carried out by an experienced Promatic service engineer, with selected parts replaced where required. Depending on the number of machines involved, servicing may take place at the shooting ground or at the Promatic factory. Combining competent on-site routine maintenance with professional support for uncertain or higher-risk work provides a safer and more dependable approach than attempting every repair simply because the spare is available.