ZRAY Debuts Stainless Steel Carton Erecting Machine (IP65/NEMA 4X, AISI 304, 20–25 CPM) for Wet and Washdown Environments | ZRAY
Washdown floors in food and beverage plants destroy a carbon-steel case erector in 12–18 months. Condensate, high-pressure rinse and caustic detergent attack every exposed fastener, and one corroded photo-eye bracket can halt a 20,000-bottle-per-hour line. ZRAY’s stainless steel carton erecting machine — model ZR-25S-SS — runs 20–25 cartons per minute at humidity above 85% and survives daily washdown at 60 °C, ≤5 bar, pH 2–12.
Material and Ingress Protection
| Assembly | Material / rating | Notes |
|---|---|---|
| Frame & panels | AISI 304 (316L option) | 2.0 mm welded, bead-blasted, no paint |
| Control cabinet | IP65 / NEMA 4X | Stainless enclosure, silicone gasket |
| Motors & gearboxes | IP66 | Epoxy-coated, stainless shafts |
| Pneumatic valves | 316 stainless bodies | FRL bowl in 316, drainable |
| Fasteners | AISI 316, button-head | No exposed hex sockets |
| HMI & sensors | IP67, stainless bezel | Sealed membrane |
Wet-Environment Design Details
- No exposed threads or hex-socket recesses — button-head or countersunk fasteners eliminate bacterial niches.
- Sloped top surfaces and drainage channels — no standing water on the frame.
- Bottom drain ports — condensate and rinse water exit the base directly.
- Food-grade H1 grease on all lube points (incidental-contact safe).
- Watertight door switch on the service guard prevents a washdown cycle from energising an open panel.
Core Specifications
| Parameter | ZR-25S-SS |
|---|---|
| Speed | 20–25 cartons/min |
| Carton L × W × H | 200–500 × 150–400 × 120–450 mm |
| Board | 3.0–7.0 mm, 3/5-layer, flute B/C/E (vertical) |
| Power | 2.2 kW, 380 V/50 Hz 3-ph (220 V/60 Hz opt) |
| Air | 0.5–0.6 MPa, ~95 NL/min |
| Sealing | 50 mm tape head, hot-melt opt |
| Control | Delta PLC + 7″ HMI |
| Ingress | IP65 cabinet / IP66 motor / NEMA 4X |
Stainless vs Carbon Steel: Life and Cost
| Criterion | Carbon steel | AISI 304 SS |
|---|---|---|
| First cost | 1.0× (baseline) | 1.4–1.7× |
| Corrosion life | 12–18 months in washdown | 8–12 years |
| Annual repaint / re-coat | Required | None |
| Unplanned downtime | High | Negligible |
| 5-year TCO | Higher | Lower |
The stainless premium pays back in roughly two corrosion-related stoppages.
PLC Alarm Codes and Field Troubleshooting
| Code | Description | Typical cause | Field action |
|---|---|---|---|
| AL-01 | Vacuum below −55 kPa | Clogged filter, cracked cup | Replace filter, soap-test fittings |
| AL-02 | Magazine empty | Low carton stack | Reload; set guides to board |
| AL-05 | Tape head fault | Tape run-out, damp blade | Reload tape, dry/replace blade |
| AL-07 | Safety circuit open | Watertight door open | Close guard, reset relay |
| AL-09 | Air pressure low | FRL iced or drained | Drain trap, check 316 bowl |
| AL-10 | Encoder / comm fault | Moisture in connector | Dry, re-seat, apply sealant |
Post-Rinse Maintenance
| Interval | Tasks |
|---|---|
| Daily | Drain FRL bowl; flush drain ports; wipe seals; verify 0.5–0.6 MPa |
| Weekly | Inspect door gasket; check for pooled water; test E-stop |
| Monthly | Lubricate lube points with H1 grease; torque stainless bolts |
| Quarterly | Replace suction cups; verify IP seals; grease gearbox |
| Annually | Insulation-test panel; re-level; full gasket set replacement |
Model Selection for Wet Lines
For wet plants, the Single-Piece Case Erector family now includes a full stainless variant; the Products page compares the whole range. Both share the 0.5 MPa air architecture.
Get a Quotation for Your Packaging Line
Send us your carton size range, board grade and required CPM — our engineers will return a model recommendation, layout drawing and quotation within 24 hours.
Contact ZRAY: [email protected] · WhatsApp +86 13681839278
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