The Yamato LTF-401CP is a 340 L (12 cu.ft) chest-style low-temperature freezer holding 0 °C to −40 °C, built on the LTF Platinum platform with single-stage refrigeration and touch-screen control. The Yamato LTF-401CP is engineered to guarantee its setpoint even in warm (+30 °C) rooms — every unit is factory-tested for seven days under demanding conditions — and its Platinum controller adds Hi/Low alarms with email and SMS notification, USB/FTP data logging, and VNC remote access. It is a mid-capacity −40 °C chest freezer for enzymes, reagents, samples, and biologicals that do not require ultra-low storage.
Key Specifications
| Spec | Value |
| Model (focus) | Yamato LTF-401CP (LTF Platinum chest series) |
| Style | Chest / horizontal, top opening |
| Temperature range | 0 °C to −40 °C |
| Capacity | 340 L / 12 cu.ft |
| Rack capacity | 27 |
| Refrigeration | Single-stage, one hermetic compressor |
| Refrigerants | CFC-free & HCFC-free |
| 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 |
| Internal dimensions | 55 × 19 × 20 in (139 × 48 × 50 cm) |
| External dimensions | 65.5 × 32 × 47.5 in (166 × 81 × 120 cm) |
| Electrical | Configured to order (115 / 208 / 230 / 220V, 50/60 Hz, 1-phase) |
Application Profile
Not every sample needs −80 °C. A great deal of laboratory material — many enzymes and reagents, plasma fractions, buffers and media stocks, and long-term chemical inventories — is stored correctly at −20 °C to −40 °C, and using an ultra-low freezer for it wastes energy and shortens compressor life. The LTF-401CP targets that band with single-stage refrigeration sized to hold 0 °C to −40 °C reliably; because Yamato tests every LTF for seven days in a warm room, the setpoint is guaranteed even where ambient conditions are marginal (see cold-storage-selection).
The chest format keeps cold in the box on lid openings, and 27 rack positions make the 12 cu.ft LTF-401CP a practical −40 °C archive for a research group or clinical lab. The Platinum controller supplies the same monitoring stack as the ultra-low line — email/SMS alarms, downloadable temperature logs, and VNC remote access — so a −40 °C store is documented and protected rather than a blind spot in the cold chain (see cold-chain-sample-storage). A ½" access port supports external probes, and a chart recorder plus CO₂/LN₂ back-up are available as options.
Frequently Asked Questions
What temperature range does the LTF-401CP hold? 0 °C to −40 °C in a 340 L / 12 cu.ft chest cabinet with a 27-rack capacity.
How is a low-temperature freezer different from an ultra-low? A low-temp freezer like the LTF-401CP uses single-stage refrigeration to hold 0 to −40 °C — the right band for enzymes, reagents, and many samples — whereas ultra-low ULF units use cascade refrigeration to reach −80 °C. Matching the freezer to the required temperature saves energy and extends compressor life.
Will it hold −40 °C in a warm room? Yes — every LTF is factory-tested for seven days under demanding conditions and its setpoint is guaranteed in warm (+30 °C) environments.
How does it alarm and log? Touch-screen control 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.
Is defrost automatic? No — manual defrost, standard for laboratory low-temperature storage.
Ordering & Configuration
quote-based. The LTF-401CP is a capital low-temperature freezer sold through a quote. At quote we confirm electrical service (115 V standard, or 208/220/230 V), floor space and ventilation clearance for the 166 × 81 × 120 cm cabinet, rack configuration, and chart-recorder or CO₂/LN₂ back-up options. Warranty terms are confirmed with the quote, and lead time is provided at quotation. Request a quote to configure the LTF-401CP for your storage program.
LTF Platinum chest low-temperature, by capacity: the LTF-401CP (340 L / 12 cu.ft) is the mid-capacity chest; step up to the LTF-801CP (626 L / 22 cu.ft) for higher volume, or choose an upright LTF-501UP when adjustable-shelf vertical access matters. For −80 °C storage, move to the ULF Platinum ultra-low line. All share the Platinum touch-screen controller and networked alarming.
