The Yamato ULF-701CP is a large 595 L (21 cu.ft) chest-style ultra-low freezer reaching −40 °C to −80 °C, built on the ULF Platinum platform with cascade two-compressor refrigeration and touch-screen control. The Yamato ULF-701CP pairs quick pull-down with the full Platinum monitoring suite — Hi/Low alarms with email and SMS notification, USB/FTP data logging, and VNC remote access — and its top-opening chest geometry keeps dense cold air in the box on every lid opening. It consolidates a high-capacity −80 °C archive for research groups, hospitals, and biobanks.
Key Specifications
| Spec | Value |
| Model (focus) | Yamato ULF-701CP (ULF Platinum chest series) |
| Style | Chest / horizontal, top opening |
| Temperature range | −40 °C to −80 °C |
| Capacity | 595 L / 21 cu.ft |
| Rack capacity | 36 |
| Refrigeration | Cascade type, two hermetic compressors |
| Refrigerants | CFC-free R-508B and R-404A |
| Condenser | Air-cooled, two heavy-duty fans (no liquid coolant) |
| Control | Touch-screen; displays set point + chamber temp |
| Alarming | Hi/Low alarm with email + SMS; dry-contact alarm & power-fail relays; battery back-up |
| Data | Temperature graph, USB/FTP logging, VNC remote access, multi-level security |
| Defrost | Manual |
| Access port | ½" porthole (left side) with plug |
| Construction | 14-ga zinc-coated galvanized chamber; 16-ga steel exterior, powder-coated cool gray |
| Power failure | Automatic timer restart |
| Internal dimensions | 81 × 21.5 × 21 in (205 × 54 × 53 cm) |
| External dimensions | 91 × 36 × 49 in (231 × 91 × 124 cm) |
| Electrical | Configured to order (115 / 208 / 230 / 220V, 50/60 Hz, 1-phase) |
Application Profile
When a −80 °C archive scales up, the chest format earns its footprint: a single 21 cu.ft ULF-701CP consolidates what would otherwise be several small freezers, and its top-opening design still minimizes cold-air loss on access — dense cold air stays in the box rather than spilling out a vertical door. With 36 rack positions it is sized for institutional biobanking, large clinical trials, and core facilities (see cold-chain-sample-storage).
The cascade refrigeration reaches −80 °C by staging two hermetic compressors, and Yamato's low-pressure design extends compressor life and dissipates heat through the twin-fan air-cooled condenser without any liquid coolant. The touch-screen Platinum controller adds the monitoring layer that modern facilities require — email/SMS alarms, downloadable logs, and VNC access to prove the cold chain held and to respond before an excursion becomes a loss (see cold-storage-selection). At these volumes, redundancy matters as much as cold: the battery-backed alarm with power-fail relay, automatic power-failure restart, and optional CO₂/LN₂ back-up guard a large, high-value inventory against equipment or utility faults.
Frequently Asked Questions
How cold does the ULF-701CP get, and how much does it hold? −40 °C to −80 °C across 595 L / 21 cu.ft with a 36-rack capacity, delivered by a cascade two-compressor system.
Why choose a chest over an upright at this size? The top-opening chest loses less cold air on access and consolidates several small freezers into one footprint, which suits high-value institutional archives.
What monitoring does the Platinum package include? A touch-screen controller with dual set-point/chamber display, Hi/Low alarms via email and SMS, dry-contact alarm and power-failure relays, a battery-backed alarm, a viewable temperature graph, USB/FTP data logging, and VNC remote access.
What refrigeration does it use? Cascade two-compressor refrigeration with CFC-free R-508B and R-404A and a twin-fan air-cooled condenser — no liquid coolant required — plus automatic restart after a power failure.
Is defrost automatic? No — manual defrost, standard for −80 °C archival storage.
Ordering & Configuration
quote-based. The ULF-701CP is a capital ultra-low freezer sold through a quote. At quote we confirm electrical service (115 V standard, or 208/220/230 V) and available current, floor space and condenser-airflow clearance for the 231 × 91 × 124 cm cabinet, rack configuration, and CO₂/LN₂ back-up needs. Warranty terms are confirmed with the quote, and lead time is provided at quotation. Request a quote to configure the ULF-701CP for your storage program.
ULF Platinum chest ultra-low, by capacity: the ULF-701CP (595 L / 21 cu.ft, −80 °C) is a large institutional archive; drop to the ULF-301CP (255 L / 9 cu.ft) for a bench-scale unit, or step up to the ULF-901CP (766 L / 27 cu.ft) for maximum volume. Choose an upright ULF-701UP when floor footprint is tighter than access stability. All share the Platinum touch-screen controller and networked alarming.
