The Yamato ULF-701UP is a 710 L (25 cu.ft) upright ultra-low freezer reaching −40 °C to −85 °C, organized into five compartments behind four adjustable shelves with a door-mounted touch-screen controller. The Yamato ULF-701UP brings cascade two-compressor refrigeration to a footprint that fits a lab aisle rather than a wall, adding Hi/Low alarms with email and SMS notification, USB/FTP data logging, and VNC remote access. It is the high-capacity upright for busy labs that value organized, walk-up access to a −80 °C collection.
Key Specifications
| Spec | Value |
| Model (focus) | Yamato ULF-701UP (ULF Platinum upright series) |
| Style | Upright / vertical |
| Temperature range | −40 °C to −85 °C |
| Capacity | 710 L / 25 cu.ft |
| Shelving | 4 adjustable shelves (5 compartments) |
| Rack capacity | 30 |
| 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 | Door-mounted touch-screen; 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 | 34 × 25 × 51.25 in (86 × 63 × 130 cm) |
| External dimensions | 50 × 37 × 79.5 in (127 × 93 × 201 cm) |
| Electrical | 115/208/230V 60Hz or 220V 50/60Hz, 1-phase (configured per order) |
Application Profile
Upright ultra-low freezers win when organization and retrieval speed matter as much as raw capacity. The ULF-701UP divides its 710 L into five inner compartments behind four adjustable shelves, each with its own gasketed inner door, so opening one section to pull a box does not warm the whole cabinet — a real advantage for shared −80 °C storage where staff retrieve samples many times a day. That structure suits cell lines, protein and enzyme stocks, nucleic acids, viral banks, and clinical specimens filed by rack and box for fast inventory (see cold-chain-sample-storage).
The cascade refrigeration stages two hermetic compressors with the low stage running only on demand, holding system pressure low, dissipating heat through the twin-fan air-cooled condenser, and extending compressor life while holding −85 °C even in warm rooms. The door-mounted 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). An automatic timer restarts the unit after a power failure, a gasket heater harness limits frost on the seal, and CO₂/LN₂ back-up is available for critical inventory. Air cooling keeps installation to clear airflow and ambient control — no plumbing.
Frequently Asked Questions
What temperature range and capacity does the ULF-701UP offer? −40 °C to −85 °C in a 710 L / 25 cu.ft upright cabinet with four adjustable shelves across five compartments and a 30-rack capacity.
Why choose an upright over a chest freezer? Uprights keep samples at eye level for fast retrieval and inventory; the five inner-door compartments limit warming when you open one section, which suits high-traffic shared storage. Chest models retain cold better for deep archives.
How does it monitor and alarm? A door-mounted touch-screen controller with Hi/Low alarms via email and SMS, dry-contact alarm and power-failure relays, a battery-backed alarm, and downloadable temperature logs (USB/FTP) plus 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-701UP is a capital ultra-low freezer sold through a quote. At quote we confirm electrical service (115 V standard, or 208/220/230 V), aisle and door-swing clearance plus condenser airflow for the 127 × 93 × 201 cm cabinet, shelf/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-701UP for your storage program.
ULF Platinum upright ultra-low, by capacity: the ULF-701UP (710 L / 25 cu.ft) is the high-capacity upright; drop to the ULF-501UP (505 L / 18 cu.ft) for a mid-size unit, or step up to the ULF-901UP (877 L / 31 cu.ft) for maximum vertical capacity. Choose a chest ULF-701CP/901CP when door-opening cold retention outranks walk-up access. All share the Platinum touch-screen controller and networked alarming.
