ANEST IWATA ISP-250 Oil-Free Scroll Vacuum Pump

Overview

The ANEST IWATA ISP-250 is a high-reliability, oil-free scroll vacuum pump engineered for continuous-duty laboratory and industrial vacuum applications requiring clean, dry, and hydrocarbon-free vacuum environments. Based on proven scroll compression technology, the ISP-250 operates without lubricating oil—eliminating oil backstreaming, vapor contamination, and associated maintenance overhead. Its hermetically sealed, dynamically balanced dual-scroll mechanism ensures smooth, near-sinusoidal torque transmission, resulting in exceptionally low mechanical vibration (<0.5 mm/s RMS) and acoustic emissions (58 dBA at 1 m). Designed for operation from atmospheric pressure down to an ultimate vacuum of 5 Pa (absolute), the pump delivers stable pumping performance across a broad pressure range (10⁵ to 5 Pa), making it suitable as a primary or backing pump in multi-stage vacuum systems.

Key Features

• Oil-Free Operation: Eliminates risk of process contamination; ideal for ultra-high-purity applications including surface science, thin-film deposition, and analytical instrumentation where hydrocarbon residue must be avoided.
• Low Vibration & Low Noise Architecture: Precision-machined aluminum alloy scrolls with optimized orbit geometry minimize radial forces and pulsation—critical for electron microscopy, interferometry, and other vibration-sensitive setups.
• IE3 High-Efficiency Motor: Compliant with IEC 60034-30-1, the 400 W motor reduces energy consumption by up to 15% compared to standard IE1 equivalents, supporting sustainability goals and reducing total cost of ownership.
• Robust Thermal Management: Integrated finned heat sink and intelligent thermal cutoff protection ensure stable operation under sustained load at ambient temperatures up to 40 °C.
• Leak-Tight Construction: Achieves maximum leakage rate of ≤1×10⁻⁵ Pa·m³/s (helium leak test per ISO 10272), meeting stringent requirements for gas recovery, tracer gas analysis, and vacuum integrity validation.
• KF25 Quick-Connect Interface: Standard ISO-KF (NW25) flange enables rapid integration into existing vacuum manifolds and compatibility with common gauges, valves, and traps.

Sample Compatibility & Compliance

The ISP-250 is compatible with inert, non-corrosive, and non-condensable gases—including N₂, Ar, He, and air. It is not rated for solvent vapors, reactive halogens (e.g., Cl₂, F₂), or corrosive process byproducts. The pump conforms to EU directives CE 2014/30/EU (EMC) and 2014/35/EU (LVD), carries RoHS 2011/65/EU certification, and meets ISO 8573-1:2010 Class 0 for particulate and oil-free air quality. While not intrinsically safe, its design supports integration into systems compliant with ATEX Zone 2 or IECEx Zone 2 when installed per manufacturer-specified grounding and electrical isolation protocols.

Software & Data Management

The ISP-250 operates as a standalone analog device with no embedded firmware or digital interface. However, its stable electrical signature (low THD, consistent current draw) allows seamless integration with third-party vacuum control systems via 0–10 V analog input/output or dry-contact status relays (run/fault signals). When deployed in GLP- or GMP-regulated environments—such as pharmaceutical lyophilization support or semiconductor R&D—the pump’s deterministic behavior, absence of consumables, and documented maintenance history (limited to periodic inlet filter inspection) facilitate audit-ready traceability. Full compliance with FDA 21 CFR Part 11 is achievable through validated external SCADA platforms that log operational timestamps, runtime hours, and thermal event flags.

Applications

• Backing pumps for turbomolecular and cryogenic vacuum systems in mass spectrometry (MS), X-ray photoelectron spectroscopy (XPS), and secondary ion mass spectrometry (SIMS).
• Primary vacuum source for physical vapor deposition (PVD) tools—including sputtering, e-beam evaporation, and ion plating—where hydrocarbon-free chamber conditioning is mandatory.
• Gas recirculation loops in helium recovery systems and environmental tracer studies requiring zero oil carryover.
• Vacuum drying, freeze-drying, and degassing of polymers, ceramics, and battery electrode slurries in materials science laboratories.
• Leak detection support for helium mass spectrometers (He-MS) and vacuum integrity testing of vacuum chambers and feedthroughs.
• Industrial vacuum handling systems for semiconductor wafer transport, flat-panel display assembly, and precision optics mounting.

FAQ

Is the ISP-250 suitable for continuous 24/7 operation?
Yes—designed for uninterrupted duty cycles under nominal load conditions (≤80% of max speed), provided ambient temperature remains within 10–40 °C and inlet gas is non-condensable and particle-free.
Does it require routine oil changes or filter replacements?
No oil is used; only the optional upstream particulate inlet filter (not supplied) requires periodic inspection and cleaning—typically every 6–12 months depending on environment.
Can it be mounted in any orientation?
It must be operated in the upright position as specified in the installation manual to ensure proper scroll alignment and thermal convection cooling.
What is the expected service life under normal lab conditions?
With proper ventilation and inlet filtration, mean time between failures (MTBF) exceeds 25,000 operating hours, supported by IWATA’s global spare parts network and documented field reliability data.
Is remote monitoring possible?
While the pump lacks native digital communication, analog output signals (0–10 V for speed feedback, relay outputs for fault/run status) enable integration with PLCs, LabVIEW, or custom SCADA dashboards for centralized vacuum system oversight.