At shift start the washer looks fine: tank full, belt moving, panels green. Two days later the first batch comes out with residue, and the search begins — detergent, water, recipe — when the real cause was a spray-pressure gauge nudged down on Tuesday and nobody wrote it down. A pcb cleaning machine daily checklist exists to close that gap: eight checks, each anchored to a value already printed on the machine
The routine below is built on an audit of our own product documentation. On 2 November 2026 we scanned all 22 CHUANGQI product pages for operator-checkable setpoints. Sixteen of the 22 publish at least one value a technician can verify at the panel — cycle times, spray and air pressures, conveyor speeds, a drying temperature. The checklist takes those published numbers as its reference points. (Source: CHUANGQI machine documentation, audit of 2 November 2026.)
Key takeaways
- Sixteen of 22 product pages publish at least one operator-checkable setpoint.
- Pressure and cycle time drift silently; residue shows up days later.
- Compare gauges against the sheet, not against memory — 30–40 psi on the CQ-C743 Offline PCBA Cleaning Machine.
- Log values, not ticks: one number per check per shift catches drift.
- Daily checks support, and never replace, the preventive-maintenance plan.
What the Spec Sheet Lets You Verify Daily
Not every machine publishes the same setpoints, and the audit shows where the coverage is strong:
| Setpoint class | Pages publishing | Published example |
|---|---|---|
| Spray & air pressure | 9 of 22 | 30–40 psi spray (CQ-C743) |
| Wash / rinse / dry cycle time | 4 of 22 | 2–8 min each (CQ-C740 Electric Stencil Cleaning Machine) |
| Conveyor speed | 3 of 22 | 0–1500 mm/min (CQ-C9610 Inline PCBA Water Cleaning Machine) |
| Drying temperature | 1 of 22 | up to 99 °C (CQ-C743) |
Source: CHUANGQI machine documentation, chuangqitech.com, audit of 2 November 2026. Page counts overlap: one machine can publish several classes.
The lesson for buyers is uncomfortable but useful: if your machine’s sheet publishes a setpoint, you get a reference the manufacturer stands behind. If it does not, the daily checklist runs on the commissioning record alone — workable, but you are comparing against your own baseline rather than the factory’s. When you spec equipment, ask which values are published; it costs nothing at purchase stage and pays out every shift afterwards.
The Eight-Check Daily Routine
Run the checks in this order — fluids before power, power before product:
- 1. Bath level and foam. Level within the tank’s marked window; foam should break within seconds of the spray stopping. Rising foam usually means detergent concentration or bath load has moved — the changeout signals in our guide to changing cleaning solution cover what comes next.
- 2. Detergent dosing. Compare the dosing rate on the log with the published band — the sheet lists a detergent consumption of 1.0–2.5 L per hour for the CQ-C9610. A dose creeping above the band with no recipe change means drag-out or dilution problems.
- 3. Spray pressure at the manifold. Read the gauge and write the number. On the CQ-C743 offline washer the published spray pressure is 30–40 psi; a value below the band with the pump healthy usually means a clogging nozzle — see the nozzle diagnostic sheet for the decay pattern.
- 4. Compressed air supply. The sheet calls for 0.45–0.7 MPa on the same machine. Air-driven valves and actuators behave differently at the bottom of that band, so verify it before the first basket enters.
- 5. Water supply and rinse quality. Supply pressure 0.2–0.3 MPa on the stencil and fixture washers; where a DI circuit is fitted, confirm the resistivity reading sits above the published floor before production starts.
- 6. Cycle time settings. Where the sheet publishes them — the CQ-C740 Electric Stencil Cleaning Machine allows two to eight minutes for each of its three stages, for example — confirm the panel still matches the process sheet. Stretched cycles are the most common undocumented change on a shared line.
- 7. Conveyor speed. On inline machines such as the CQ-C9610, the published range runs 0 to 1500 mm/min. Log the set value; a speed nobody remembers changing is still a recipe change.
- 8. Dry-off result. End the loop where failures become visible: the first board out of the dry stage is inspected for standing water. Where the sheet publishes a drying temperature — up to 99 °C on the CQ-C743 — check the machine reaches it.
What a Daily Log Catches That a Weekly One Misses
A weekly record shows you a step function; a daily record shows you the slope. Spray pressure decays over days as filters load, and a value that passes the band check every Friday can spend three weekdays below it. The point of the routine is not bureaucracy — it is that each check ends in a number, and numbers form trends before trends form defects.
One boundary, stated plainly: the daily checklist does not replace the maintenance calendar. Filters, seals and pumps follow usage, not shifts, and the daily routine only observes them. The two documents work together — the daily log gives the maintenance plan its evidence, and our preventive-maintenance schedule explains what belongs in that plan and when.
Most of the reference values in this checklist come straight from our published sheets. If your current machine cannot answer them, tell us what your line runs and get a quote within 24 hours.
What should I check on a cleaning machine every day?
At minimum: bath level and foam, detergent dosing, spray and air pressures against the sheet, water supply, cycle-time and speed settings, and the first dried board. Each check should end with a written number, not a tick.
How long should the daily check take?
A few minutes on a single machine once the routine is familiar. Most of that time is writing values down, not measuring them — the gauges and panel readouts are already there.
Which settings must never be changed without a process engineer?
Everything the process sheet fixes: cycle times, conveyor speed, detergent concentration, and temperature setpoints. Operators record and report deviations; they do not correct them, because a quiet change destroys the evidence trail the record exists to build.
Does a daily checklist replace preventive maintenance?
No. The daily routine observes condition; the maintenance plan changes parts on a schedule derived from usage. The checklist feeds the plan with trend data — it cannot substitute for it.