PCBA washer spare parts are usually bought on price and regretted on downtime. The mistake is treating the list as one long menu of components when the machine only has three kinds of part: those that stop the line when they fail, those that can wait for a shipment, and those that are consumed on a schedule whether or not anyone is watching. Nine items cover all three, and each one is placed below by what happens on the floor rather than by what it costs.
Everything in this sheet is placed against one machine: the CHUANGQI CQ-C9610, an inline PCBA washer built around a PP enclosure, a SUS316 stainless mesh belt, DI rinse water rated above 15 MΩ, a 10–16 L/min rinse draw and a 580 × 450 × 80 mm workpiece envelope. Machines ship under a 12-month warranty with lifetime remote support and English documentation, and knowing where that warranty stops is the first decision on the list below.
Key takeaways
- Sort spares by line-stop cost, not by unit price.
- A 12-month warranty covers the machine, not the wear parts.
- Stock nozzles by position, because one fan clogs faster.
- Two Tier-3 items can wait until year two.
- Write the failure symptom on the stock card, not the part number.
Sort spares by what stops the line, not by price
Method and scope. This sheet classifies spare parts for a conveyor-fed spray washer used on assembled boards. The classification is by consequence: a Tier 1 part fails and the machine cannot run at all; a Tier 2 part fails and the machine runs badly, producing questionable boards; a Tier 3 part is consumed and its absence is a quality drift rather than a stop. Warranty terms quoted here come from CHUANGQI’s published commitment, and nothing in this list sets a stock quantity — that number depends on your own failure history and your supplier’s lead time, neither of which a machine builder can know.
The reason to sort this way is arithmetic. A line that stops for a component worth a small fraction of a day’s output loses the whole day, and the parts budget that avoided it looks expensive only until the first unplanned stop. Sorting by price produces exactly the wrong list: cheap parts get stocked in depth and the expensive single points of failure get ordered after they fail.
One caution before the list. Under the 12-month warranty, a failed part is a warranty question. After month twelve it is a stock question. The two lists overlap, and a plant that never separated them usually discovers the gap on the first failure after the warranty clock runs out.
The nine items, and the question each one answers
1. Spray nozzles, by header position
Tier 1. A blocked or worn nozzle leaves a repeatable dirty patch. Nozzles are cheap, and a missing one stops you from fixing a positional defect for as long as a shipment takes. Stock by position: the fan that clogs first is usually the same fan every time, and one nozzle of that type on the shelf converts a stopped line into a short job. Not applicable as a single part number if your header runs two nozzle types — count both.
2. Filter elements for the wash and rinse circuits
Tier 3. Filters are consumed, and their loading rate is the earliest warning that bath chemistry or board mix has changed. A missing element does not stop the machine, which is exactly why running past the change interval is so common and so costly. Keep the elements for both circuits, and keep them where the person changing them can reach them without a search.
3. Pump seals and the pump itself
Tier 1 at the seal, Tier 2 at the pump. A leaking seal degrades spray delivery gradually; a failed pump stops the machine outright. Seal kits are the sensible stock item because they are the part that fails first, and the pump is the item to have a documented replacement path for rather than a unit on the shelf.
4. Conveyor belt and its tension hardware
Tier 1. The SUS316 mesh belt carries every board through wash, rinse and dry, and a damaged belt stops production and can mark product. Belt length is machine-specific, so this is a part to order against the machine’s own specification rather than a generic item. Not applicable as a wear judgement if the belt runs continuously at the top of the 0–1500 mm/min range — tension hardware then wears ahead of the mesh.
5. Air-knife and blow-off components
Tier 2. A weak air knife does not stop the line; it returns wet boards, and wet boards fail downstream processes quietly. The parts involved are small, the symptom is easy to misread as a chemistry problem, and having the replacement on hand shortens the argument.
6. Door seals and enclosure gaskets
Tier 2. A seal that has hardened lets water reach places the design intended to keep dry. The failure shows up as corrosion on a bracket or a tripped sensor rather than as a cleaning defect, so the part is worth holding even though nobody ever orders it in advance.
7. Temperature and level sensors
Tier 2. Sensors fail by drifting as often as by dying, and a drifting temperature reading sends the whole line chasing a problem that is not there. Keeping one of each sensor type on the shelf is cheaper than the diagnostic hours a false reading consumes.
8. Detergent and DI-water dosing hardware
Tier 2. The dosing side holds detergent demand at 1.0–2.5 L/h and the rinse draw at 10–16 L/min inside those published ranges. When dosing hardware drifts, the first symptom is a change in consumption at the same board mix, and the part that fixes it is usually a valve or a metering component rather than the whole assembly.
9. Consumables that carry a quality claim
Tier 3. Test boards used for ionic cleanliness verification, and the reference materials your own quality system names, belong on the stock list even though they are not machine parts. A machine that cannot demonstrate cleanliness is not producing shippable boards, whatever its spray pattern looks like.
Where each item sits, and what its failure looks like
The table is the version to hand to a storekeeper, because it pairs each item with the symptom that should trigger a replacement rather than with a part number.
| Item | Where it sits | Failure looks like |
|---|---|---|
| Nozzles, by position | Spray headers, wash and rinse | Repeatable dirty patch on one board area |
| Filter elements | Wash and rinse circuits | Flow readings sliding to the bottom of the band |
| Pump seals | Pump housing | Gradual loss of spray delivery |
| Conveyor belt | SUS316 mesh belt and tensioners | Tracking drift, marks on product |
| Air-knife parts | Dry stage blow-off | Wet boards at the exit |
| Door seals | Enclosure openings | Moisture where the design keeps it dry |
| Sensors | Temperature and level points | Readings that drift without a process change |
| Dosing hardware | Detergent and DI feed | Consumption moving at the same board mix |
| Verification consumables | Quality bench, not the machine | No evidence to show a customer |
Source: CQ-C9610 specification sheet and CHUANGQI’s published warranty terms, chuangqitech.com, October 2026. Stock quantities are deliberately not specified — they depend on your failure history and your supplier’s lead time.
What to write on the stock card
A stock card that carries only a part number teaches the next person nothing. Four fields make it useful.
- The symptom, in one sentence. What the operator will see when this part is the cause.
- The position it serves. Header number, circuit name, or belt section.
- The last replacement date and the reading that justified it.
- Whether it is a warranty item or a purchased item. This one decides who is called first.
Two further practices keep the list honest. Review it against what actually failed on a cadence you set, because a stock list that never changes is a list nobody is reading. And treat the warranty boundary as a date on the calendar rather than a clause in a folder: the breakdown of what the 12-month warranty covers sets out the terms, and this sheet starts where that one ends. The maintenance interval plan explains which of these parts the schedule consumes.
Where this list does not apply
This sheet is written for the inline spray type: product travels on a mesh belt through wash, rinse and dry in one enclosure. It is not suitable for an ultrasonic batch machine, where the transducer stack and the tank are the single points of failure and the belt items disappear entirely, and it does not transfer to dry-ice blasting, where the consumable is the medium itself and the wear items follow a different logic.
It also stops short of setting quantities. Any recommended stock level would be a number invented on your behalf, because the two inputs — how often the part actually fails on your boards and how long a shipment takes to reach you — are things only you can measure. What this list does is make sure the measurement happens on the right items.
Send the machine model and whatever stock list you already keep through the cleaning application form. Our engineers mark the gaps against the nine items above and flag the two that can wait. Expect a quote within 24 hours. Specifications behind every judgement here are published for the CQ-C9610 Inline PCBA Water Cleaning Machine on its spec sheet.
Frequently asked questions
How many spare nozzles should I keep on the shelf?
Enough to cover the positions that have already clogged, plus one. A header with four fans where the same fan blocks twice a year needs that nozzle type on the shelf, not four of everything. Counting failures by position over twelve months gives the number; anything else is a guess dressed as planning.
Does the warranty cover wear parts?
A 12-month warranty covers the machine and its components against defect, and wear parts are a different conversation because their failure is a function of use rather than of manufacture. The practical answer is that the warranty period tells you which failures to raise with the builder first, and the stock list tells you which ones you will simply replace.
Can I buy spare parts locally instead of from the builder?
For generic items such as seals and filter elements, often yes, provided the specification matches what the machine was built around. For anything that touches the wet circuit’s materials or the spray geometry, matching the original specification matters more than the delivery time saved, because a substituted nozzle changes the spray field and a substituted seal changes what the enclosure tolerates.
Which single spare part causes the longest stop if it fails?
The conveyor belt. It is machine-specific, it cannot be improvised from stock material, and nothing on the line runs while it is missing. That is why the belt sits in the first tier despite being one of the more expensive items on the list, and why its specification should be written down long before anyone needs to order it.
Specification values and warranty wording come from chuangqitech.com as published in October 2026. They describe the machine as built, not a process target for your plant.