Share thisPurchasing large capital equipment such as a rack washer involves more than looking at the bottom line and selecting, what appears to be, the least expensive machine. There are many factors just as important as the purchase price and it is well worth the time to take these into consideration when deciding which piece of equipment is right for the facility.
Over the life span of the machine, its features, performance, and ongoing operating costs all factor into the equation. A structured, comparative process incorporating these items will result in identifying a piece of equipment that will be the best value for the money at the time of purchase as well as for the duration of its operating life. The formula for this type of analysis is simple: build a comparison chart of features, look at performance results, calculate running costs, and make sure bidders are quoting the “same machine.”
Comparing Features
First, it is important to determine the machine requirements. Ask questions such as what type products will it be washing; how fast must it operate in order to attain the desired throughput; and what other options will be needed in order to meet the facility needs both now and in the future. Defining and documenting these requirements clarifies what the equipment needs to do. When making large purchases, some people base decisions on perceived savings; the less they ask for, the more it will save. On the other hand, some see a new machine as an opportunity to obtain options and features that will allow the machine to grow with them. A document that states the needs clearly helps keep the focus on defining the right tool for the job.
After the facility needs are determined, the next step is to make a technical comparison (Figure 1). In general, this information can be taken from each manufacturer’s specification sheets. Using a chart of this type can offer a direct comparison on critical features, list important physical characteristics such as dimensional size, and be helpful when considering add-ons and other options. For example, the sample chart shows items such as cycle time, water consumption, bottle washing capability, and features such as thermal disinfection cycles. Creating a simple spreadsheet puts all the facts together, acts as a quick technical reference, and, most importantly, is an objective evaluation tool.
Looking at Performance
After the technical facts are gathered from the vendors/manufacturers, another step in the process is to determine if performance testing has been conducted. Ask if any studies or tests have been performed to evaluate critical areas such as washing efficiency and see if the results substantiate other major aspects of the equipment. It is extremely worthwhile to ask if this type report is available and to take the time to read and evaluate the results. Technical or operational characteristics such as cycle length or water consumption represent one measure of performance that can be independently evaluated. Are there any outside sources that can confirm or validate performance?
More complex, but definitely more important, is performance testing that addresses cleanliness. A “before” and “after” sampling would assess the degree of cleanliness by testing any residual. Ideally, a microbiological validation would provide evidence of proven washing efficacy.
Projecting Operating/Running Costs
A rack washer, being a capital equipment asset, is a long-term purchase. Therefore, it is essential to evaluate the financial return on the investment (ROI) in order to determine which system is more economical in the long run. This projective evaluation should consider the initial expenditure as well as the various costs associated with operating the equipment over its expected life or at minimum, over a reasonable period of time beyond its purchase.