Concept image only: not the worked proposals, a tested head-and-bin pairing or an approved installation.
The first function takes 40 kg of ice. The next one needs another 20 kg an hour later. A bigger bin can cover the first call and still leave the second bar waiting. A faster ice maker can refill quickly and still start with too little stock.
Size the reserve and the replenishment separately. The bin must hold usable ice before the withdrawal; the machine must replace enough of it before the next deadline. Daily production is not a promise that the right quantity will arrive between two services.
This worked comparison tests three fictional head-and-bin proposals against the same two requests. It shows where storage solves the problem, where production matters and why ice arriving just after a deadline cannot be counted as available just before it.
Read production, storage and opening stock as three different numbers
Production describes ice made under stated conditions. Storage capacity describes the bin’s stated holding quantity. Opening stock is the usable ice actually available when service begins. Buying a bin does not fill it, and a daily rating does not establish the opening reserve.
Hoshizaki Australia’s IM-240ANE-28 page illustrates the first distinction: it lists production under different air and water conditions, identifies a modular machine and says the pictured bin is sold separately. Treat the head, compatible bin and their installation as one proposal, with their specifications kept separate.
Maximum storage and operating stock can also differ. Hoshizaki’s IM-45CPE-25-F information lists a maximum storage figure and a separate approximate bin-control setting. That is a reason to obtain the selected system’s usable-stock evidence, not a percentage to apply to every bin.
Start the planning sheet with the ice form your menu needs and measured withdrawals for each use. Include shared departments and function setup. An attractive cube or a large daily figure cannot compensate for an unsuitable ice form or a reserve another team has already collected.
Worked brief: two booked services with a refill deadline
Hypothetical arithmetic, not machine test data or a holding procedure. A venue needs 40 kg immediately at 18:00 and 20 kg immediately at 19:00. Assume all stated opening ice is usable, no other withdrawals occur and there are no melt or handling losses. Those simplifying assumptions must be replaced in a real brief.
The imagined machines supply usable replenishment at 18:30 and again at 19:00. For this example, the second request is made before the 19:00 replenishment becomes available. This event order is deliberate: an hourly total would hide it. None of the invented deliveries below came from dividing a published daily production rating.
| Proposal | Usable opening reserve | Usable replenishment at each stated event | Question it tests |
|---|---|---|---|
| A: smaller reserve, faster replenishment | 30 kg | 10 kg | Can later production rescue the first burst? |
| B: larger reserve, slower replenishment | 50 kg | 6 kg | Does storage alone cover the second service? |
| C: larger reserve, faster replenishment | 50 kg | 10 kg | Does covering both deadlines leave any reserve? |
Scroll the table sideways to see every column.
The labels describe only fictional quantities. They do not specify real bin ratings, approved machine pairings or guaranteed harvest cycles. A supported system must establish its actual usable opening stock, replenishment timing and service access.
Follow the ice when each request arrives
| Event | A: 30 kg reserve / 10 kg event | B: 50 kg reserve / 6 kg event | C: 50 kg reserve / 10 kg event |
|---|---|---|---|
| Before 18:00 | 30 kg available | 50 kg available | 50 kg available |
| 18:00: request 40 kg | Serve 30; 10 kg unserved; stock 0 | Serve 40; stock 10 kg | Serve 40; stock 10 kg |
| 18:30: replenishment available | 0 + 10 = 10 kg | 10 + 6 = 16 kg | 10 + 10 = 20 kg |
| 19:00: request 20 kg, before replenishment | Serve 10; 10 kg unserved; stock 0 | Serve 16; 4 kg unserved; stock 0 | Serve 20; stock 0 |
| 19:00: later replenishment arrives | Stock becomes 10 kg | Stock becomes 6 kg | Stock becomes 10 kg |
Scroll the table sideways to see every column.
Proposal A fails the first request despite its faster replenishment. Proposal B solves the first burst but is four kilograms short for the next one. Proposal C covers both requests in the arithmetic, yet reaches zero immediately after the second draw. It has no allowance for an extra order, a smaller opening reserve or a delayed replenishment.
Notice B’s closing stock: six kilograms are available after the late event, even though four kilograms went unserved at the deadline. An end-of-hour photograph could look reassuring while concealing the actual service failure. Keep unmet requests and later stock as separate records; do not silently assume customers waited.
Turn the shortage into a purchasing question
With 50 kg available initially and 60 kg requested by the second deadline, the simplified plan needs at least 10 kg of usable replenishment before that deadline. C supplies exactly that at 18:30. B supplies six, leaving the four-kilogram gap.
One theoretical alternative for B is 54 kg of usable starting stock: 54 − 40 + 6 − 20 = 0. That is a mass-balance answer, not a recommendation to buy a 54 kg bin. The bin must actually deliver that usable stock under the supported arrangement, and someone must establish how it is filled before service.
Choose the direction according to the failure. If the first instantaneous draw exceeds the available reserve, investigate more usable reserve or an assessed change to the service plan. If the reserve covers the first draw but cannot recover for the next, investigate replenishment, additional reserve or a supported alternative supply plan. When both fail, changing one headline specification may be insufficient.
Define the reserve you want remaining after each critical request, using the venue’s actual variability and contingency plan. This guide supplies no universal percentage buffer. A zero balance is an exposed assumption to discuss, rather than an engineering safety margin.
Prove the fill-and-recovery sequence
Ask the supplier to work back from the required opening stock. Record earlier withdrawals, available filling periods, bin-control behaviour and any instructed pauses or maintenance. Do not assume the machine produces its rated daily amount while every bin is already full, or that stock removed for an earlier event reappears by dinner.
For replenishment, retain actual amounts and times from a representative supported operating assessment. Record air and incoming-water conditions, the machine and bin configuration and the period between withdrawing ice and usable replacement reaching the service route. Include transfer time if the machine is remote from the bar.
If a withdrawal and replenishment share a timestamp, document their order. If timing is uncertain, test the less favourable sequence as well. Production still inside the machine is not yet a scoopable reserve. A smooth rate may help an early estimate, but it must not erase batch timing, control behaviour or an observed interruption.
For the wider choice of ice form, machine arrangement and ownership scope, use the commercial ice-machine buying guide. This comparison specifically tests the reserve and recovery relationship between services.
Quote the complete head-and-bin arrangement
Request the exact head, compatible bin, adapters or top kits where needed, controls and installation requirements. Confirm whether each component is included. A machine photographed on a bin is not evidence that the quoted price includes it.
Keep services, drainage, heat rejection, ventilation and access assessment attached to the proposal. Include a practical ice-collection route and the model’s prescribed cleaning and handling arrangements. Hoshizaki’s linked IM-240ANE instructions, for example, identify bin pairing and ice-only storage alongside hygiene and scoop instructions. Use the actual selected documentation, not a cleaning recipe or interval copied across machines.
State responsibility for delivery, positioning, connections, commissioning, operator training, treatment and support. Obtain current written terms rather than assuming stock, service coverage or warranty. A capacity comparison is only useful if the resulting system can be installed and operated as proposed.
Prepare the reserve-and-recovery comparison
For your own supplier brief, record each withdrawal and replenishment event, served and unserved quantities, and usable ending stock. Replace the fictional inputs with actual evidence and leave unresolved decisions visible.
“Please assess the usable opening reserve and replenishment available before each attached service deadline. Identify head/bin pairing, bin-control assumptions, earlier withdrawals and actual site conditions. Explain which proposal closes each shortage and what reserve remains afterwards.”
Compare Atlantic’s commercial ice machines with both specifications in the brief. Send the actual event record and site information through Atlantic Equipment enquiries.
Sources and example limits
- Hoshizaki Australia IM-240ANE-28 information — separate conditional production, modular bin and cycle fields; bin sold separately.
- Hoshizaki Australia IM-45CPE-25-F information — separate maximum storage and bin-control-setting fields.
- Hoshizaki IM-240ANE instruction manual — model-specific bin pairing and operating/hygiene instructions.
Checked 18 October 2026. Every demand, reserve, replenishment amount and event time in the worked comparison is fictional. No published production figure was converted into these events. Losses and other withdrawals are omitted; actual process, usable stock, site and contingency requirements remain to be assessed.
About this guide
Prepared by Atlantic Equipment. This guide separates the ice held before a function from the replenishment needed for the next one. Its three fictional proposals expose different storage and production failures, while the editable timeline records late ice without erasing missed service requests. It supports an evidence-led system brief, not a model recommendation or measured performance claim.
