ZIEGRA Flake Ice Machine – Heavy-Duty Industrial Series

Overview

The ZIEGRA Flake Ice Machine – Heavy-Duty Industrial Series is a precision-engineered refrigeration system designed for continuous, high-volume flake ice production in demanding laboratory, pharmaceutical, food processing, and biomedical applications. Utilizing dual-screw extrusion technology, the machine forces chilled water through a precisely dimensioned die under controlled pressure and temperature gradients, producing dry, thin (1–2 mm), low-melting-point flake ice with exceptional surface area-to-mass ratio. This morphology ensures rapid thermal transfer, minimal drip loss, and uniform cooling—critical for sample preservation, cold chain logistics, and temperature-sensitive reaction control. Built entirely in Germany to DIN-certified manufacturing standards, the unit integrates a hermetically sealed refrigeration circuit with R404A or R507A refrigerant (configurable per regional regulation), optimized for energy efficiency, long-term stability, and operational reliability across ambient temperatures ranging from +5 °C to +43 °C.

Key Features

• Fully imported German engineering with CE marking and compliance to EN 60335-1 (safety of household and similar electrical appliances) and EN 13486 (performance requirements for ice makers)
• Dual-screw extrusion system delivering consistent flake geometry, density (≈350–420 kg/m³), and low residual moisture (<1.5% w/w) without post-drying stages
• Hermetic compressor architecture with oil management system ensuring >25,000 hours MTBF and reduced maintenance intervals
• Stainless steel (AISI 304/316) evaporator drum and auger assembly resistant to corrosion, microbial adhesion, and thermal fatigue
• Modular design supporting scalable configurations—from single-unit 150 kg/day benchtop models to multi-module systems delivering up to 10,000 kg/day with integrated ice conveyance and storage
• Integrated PLC-based controller with real-time monitoring of evaporator superheat, condensing pressure, ice thickness, and production rate

Sample Compatibility & Compliance

ZIEGRA flake ice machines are routinely deployed in GLP- and GMP-regulated environments—including clinical laboratories, biobanks, and API manufacturing facilities—where traceable, contamination-controlled cooling media are required. The flake output meets ISO 8573-1 Class 2 compressed air purity equivalency for particulate and microbiological content when paired with optional inline UV sterilization and stainless steel ice delivery chutes. All wetted surfaces comply with FDA 21 CFR 178.3710 (indirect food additives: lubricants) and EU Regulation (EC) No 1935/2004. Documentation packages include Factory Acceptance Test (FAT) reports, material certifications (EN 10204 3.1), and IQ/OQ protocol templates aligned with ASTM E2500-13 and Annex 15 of the EU GMP Guide.

Software & Data Management

The embedded ZIEGRA Control Suite v4.2 supports Modbus TCP and EtherNet/IP communication protocols for integration into centralized building management systems (BMS) or LIMS. Audit-trail functionality complies with FDA 21 CFR Part 11 requirements, logging operator actions, parameter changes, alarm events, and cycle history with user authentication and electronic signature capability. Remote diagnostics via secure TLS 1.2 connection enable predictive maintenance alerts based on compressor current draw trends, refrigerant saturation deviation, and ice thickness variance analysis—reducing unplanned downtime by up to 37% in validated multi-shift operations.

Applications

• Biological sample cryopreservation during transport and preparation (e.g., PBMC isolation, tissue banking, IVF workflows)
• Cooling of exothermic chemical synthesis reactors and calorimetry cells requiring sub-0 °C thermal inertia
• Pharmaceutical stability testing chambers where uniform, non-condensing cooling media prevent dew point violation
• Food safety testing labs requiring ISO/IEC 17025-compliant ice for sample homogenization and temperature stabilization
• Marine research vessels and polar field stations operating under extended off-grid conditions with diesel-generator backup compatibility

FAQ

What is the minimum ambient temperature required for stable operation?
The system maintains rated capacity down to +5 °C ambient; optional low-ambient kits extend functionality to –10 °C with head-pressure regulation.
Can the machine be integrated with existing glycol chiller infrastructure?
Yes—condenser water circuits support direct connection to facility glycol loops (30–40 °C inlet, ΔT ≤ 5 K) with configurable flow switches and pressure transducers.
Is validation documentation available for GMP environments?
Full DQ/IQ/OQ documentation, including calibration certificates traceable to PTB (Physikalisch-Technische Bundesanstalt), is supplied standard with each unit.
What maintenance intervals are recommended for the dual-screw extrusion module?
Lubrication and torque verification every 6,000 operating hours; full auger alignment and die clearance inspection every 18,000 hours—supported by ZIEGRA’s global service network.
Does the system support variable ice thickness output?
Yes—thickness is adjustable from 0.8 mm to 2.5 mm via programmable extrusion speed and barrel temperature setpoints, enabling application-specific optimization.