HePu WS-200YDA Horizontal Autoclave
| Brand | HePu (Jihepu) |
|---|---|
| Origin | Shandong, China |
| Model | WS-200YDA |
| Sterilization Chamber Volume | 200 L (Ø515 mm × 1000 mm) |
| Maximum Operating Temperature | 134 °C ± 1 °C |
| Maximum Working Pressure | 0.22 MPa |
| Temperature Range | 40–134 °C |
| Sterilization Time Range | 1–60 min |
| Drying Time Range | 1–60 min |
| Thermal Uniformity | ≤2 °C |
| Power Supply | 9 kW / 380 V AC, 50 Hz |
| Safety Interlocks | Door lock at >0.027 MPa, low-water cutoff, overpressure relief valve (0.24 MPa), leakage & overload protection |
| Net Weight | 260 kg |
| Overall Dimensions (L×W×H) | 1560 × 820 × 1850 mm |
Overview
The HePu WS-200YDA Horizontal Autoclave is a fully automated, Class B gravity-displacement and vacuum-assisted steam sterilizer engineered for reliable terminal sterilization of heat- and moisture-stable materials in clinical, pharmaceutical, food safety, and research laboratory environments. It operates on the principle of saturated steam under controlled pressure, leveraging the high latent heat of condensation to achieve microbial lethality across bacterial vegetative cells, spores, viruses, and prions. The unit conforms to ISO 17665-1:2017 (Sterilization of health care products — Moist heat — Part 1: Requirements for the development, validation and routine control of a sterilization process for medical devices) and supports validation protocols aligned with EN 285 and FDA 21 CFR Part 820. Its horizontal cylindrical chamber design enables efficient loading of large-volume or long-format items—including surgical trays, glassware, textile packs, culture media bottles, and bulk liquid containers—while maintaining uniform thermal distribution throughout the 200 L sterilization chamber.
Key Features
- Dual-layer chamber construction: inner sterilization chamber and outer steam jacket fabricated from high-grade stainless steel (AISI 304), ensuring corrosion resistance, structural integrity, and extended service life.
- Integrated safety interlock system compliant with EN 61010-1 and EN 61000-6-3: door remains mechanically locked when chamber pressure exceeds 0.027 MPa; automatic steam valve sequencing prevents accidental opening during cycle phases.
- Intelligent water management: high-level float switch initiates automatic fill to ~20 L pre-heating reservoir; dry-run prevention triggers audible alarm, heating cutoff, and exhaust venting upon low-water detection.
- Precision temperature and pressure regulation: PID-controlled electric heating (9 kW immersed elements) maintains ±1 °C accuracy at setpoints from 40 °C to 134 °C; pressure monitoring via calibrated transducer with redundant mechanical safety valve (set at 0.24 MPa).
- Automated air removal: programmable pre-vacuum and pulsing cycles eliminate cold spots by evacuating non-condensable gases prior to sterilization, critical for porous load sterilization per ISO 11140-1.
- Full-cycle automation with real-time status display: integrated PLC controls water intake, heating, sterilization hold, drying, cooling, and exhaust phases; all stages visualized via LED interface with cycle progress dialog and fault diagnostics.
Sample Compatibility & Compliance
The WS-200YDA accommodates diverse load types including wrapped instruments, unwrapped solids, porous materials (e.g., gauze, linen), liquids in vented containers, and agar-based microbiological media. Its validated performance meets requirements for sterilizing materials classified under ISO 15883-1 (washer-disinfectors) and supports AAMI ST79:2017 guidelines for steam sterilization in healthcare facilities. The chamber geometry (Ø515 mm × 1000 mm) allows vertical stacking of standard autoclave baskets and compatibility with ISO/IEC 17025-accredited validation fixtures. All electrical components comply with CE marking directives (EMC Directive 2014/30/EU, Low Voltage Directive 2014/35/EU), and thermal insulation using high-density glass wool minimizes ambient heat emission and energy consumption.
Software & Data Management
While the WS-200YDA operates via embedded microcontroller without external PC connectivity, it provides comprehensive local data logging: cycle start/end timestamps, actual vs. setpoint temperature/pressure profiles, duration of each phase, and event-triggered alarms (e.g., door open violation, low water, overtemperature). Audit trail functionality records operator-initiated actions (start, abort, parameter modification) with time stamps—supporting GLP and GMP documentation requirements. Optional RS-485 interface (available upon request) enables integration into centralized facility monitoring systems for remote cycle supervision and electronic record retention per FDA 21 CFR Part 11 Annex 11 principles.
Applications
This autoclave serves as a primary sterilization platform in hospital central sterile supply departments (CSSD), university biosafety level-2 (BSL-2) laboratories, contract manufacturing organizations (CMOs), food microbiology testing labs, and R&D facilities developing sterile drug products or medical devices. Typical use cases include terminal sterilization of surgical kits, reusable diagnostic tools, petri dishes and pipette tips, nutrient broths and agar plates, veterinary equipment, and packaging components prior to aseptic filling. Its 134 °C fast-cycle capability (with vacuum-assisted drying) reduces turnaround time for urgent loads while preserving material integrity—particularly advantageous for heat-sensitive polymers and glassware requiring rapid re-use.
FAQ
What standards does the WS-200YDA comply with for sterilization validation?
It adheres to ISO 17665-1:2017 for moist heat sterilization process development and validation, and its design incorporates features required by EN 285 for large steam sterilizers.
Can the unit sterilize liquids in sealed containers?
No—only vented or partially sealed containers are permitted to prevent explosion risk; liquid cycles must include slow exhaust and post-sterilization cooling to avoid boil-over.
Is third-party IQ/OQ/PQ support available?
Yes—HePu provides documented qualification templates and on-site technical assistance for Installation Qualification (IQ), Operational Qualification (OQ), and Performance Qualification (PQ) execution.
Does the autoclave support programmable multi-step cycles?
Yes—up to six user-defined programs can be stored, each configurable for pre-vacuum count, sterilization temperature/time, drying duration, and exhaust rate.
What maintenance intervals are recommended?
Daily: chamber inspection and door gasket cleaning; quarterly: safety valve calibration and vacuum pump oil replacement; annually: full sensor verification and steam trap function test per manufacturer’s service manual.
