The Yamato LTF-501U is an Upright (vertical, front-opening) low-temperature freezer delivering a guaranteed operating range of 0°C to -40°C (+32°F to -40°F) with 18 cu.ft. (505 L) of usable storage. Every LTF freezer is fully tested for 7 days, and the constant ultra-low setpoint is guaranteed even in warm (+30°C) ambient environments. Built in the USA, the LTF-501U pairs a single-stage hermetic compressor with digital dual-display control and a battery-backed audible/visual alarm for dependable sample protection in clinics, research labs, small laboratories, hospital rooms, and medical clinics. This is capital equipment — freight-delivered and quote-based.
Key Specifications
| SKU | LTF-501U |
| Style | Upright (vertical, front-opening) |
| Temperature range | 0°C ~ -40°C / +32°F ~ -40°F |
| Capacity | 505 L (18 cu.ft.) |
| Rack capacity | 20 racks |
| Shelving | 4 adjustable (5 compartments) |
| Internal dimensions | 23" x 26" x 51.25" (58 x 66 x 130 cm) |
| External dimensions | 40" x 36" x 79.5" (101 x 91 x 201 cm) |
| Temperature control | Digital control with two temperature displays (one shows set temperature, one shows actual chamber temperature) |
| Alarm system | Battery-operated audible + visual alarm; over- and under-temperature settings; alarm-silencing switch; battery-test switch; relay for remote alarm hook-up |
| Refrigeration | Single-stage system with one hermetic compressor; CFC- & HCFC-free refrigerants |
| Construction | Chamber: 14-ga. zinc-coated galvanized steel. Exterior: 16-ga. steel, powder-coated cool-gray finish |
| Defrost | Manual defrost |
| Voltage | 115V / 208V / 230V, 60Hz, 1-phase; 220V, 50Hz or 60Hz, 1-phase (specify at order) |
| Origin | Made in the USA |
| Optional accessories | Chart recorder; CO₂ and LN₂ back-up system; racks; cold-safety gloves |
| List price | $16,540.00 |
Application Profile
The LTF-501U's 18 cu.ft. / 505 L working volume and 20-rack capacity suit labs needing reliable -40°C storage without ULT (-80°C) cost. Per the LTF Series brochure, primary uses span clinics and medical clinics for reagent, control, and specimen storage at a validated cold setpoint; research laboratories for sample, enzyme, and biological-material storage in the 0°C to -40°C band; and small laboratories needing primary cold storage where footprint and simplicity matter. In hospital rooms and cold-chain sample storage it provides a continuous -40°C hold, with battery-backed alarm and remote-alarm capability for excursion protection.
The upright (vertical, front-opening) format with 4 adjustable (5 compartments) organizes inventory into discrete, browsable compartments — favoring frequent-access workflows and a smaller floor footprint than an equivalent-capacity chest.
Design Architecture
Refrigeration. A single-stage refrigeration system with one hermetic compressor drives the 0°C to -40°C range using CFC- and HCFC-free refrigerants — a simpler, more serviceable mechanical package than cascade ULT systems, matched to a -40°C lowest guaranteed setpoint.
Control and monitoring. Digital control with two temperature displays shows the set temperature and the actual chamber temperature simultaneously, so operators verify both target and real conditions at a glance. The battery-operated alarm system issues an audible and visual signal on mechanical or electrical failure, provides over- and under-temperature limits, an alarm-silencing switch, and a battery-test switch. A relay for remote-alarm hook-up lets the freezer tie into facility monitoring or building alarm systems.
Construction. The interior chamber is 14-ga. zinc-coated galvanized steel; the exterior is 16-ga. steel with a powder-coated cool-gray finish for durability in demanding lab and clinical environments.
Validation and envelope. Every LTF unit is fully tested for 7 days and holds its ultra-low setpoint even in warm (+30°C) ambient environments. Confirm doorway, elevator, and floor-load clearances against the 40" x 36" x 79.5" external footprint before delivery.
Frequently Asked Questions
What temperature range does the LTF-501U reach? The LTF-501U holds a guaranteed operating range of 0°C to -40°C (+32°F to -40°F), and maintains that setpoint even in warm (+30°C) ambient environments.
How much storage capacity does the LTF-501U have? It provides 18 cu.ft. (505 L) of usable storage and holds up to 20 racks, organized across 4 adjustable shelves (5 compartments) in an upright (vertical, front-opening) format.
Is the LTF-501U available in 230V? Yes. The LTF-501U is published in multiple electrical configurations — 115V / 208V / 230V at 60Hz, and 220V at 50Hz or 60Hz, single-phase. Specify the required voltage and plug type at order.
Does the LTF-501U use manual or automatic defrost? The LTF-501U is a manual-defrost freezer with a single-stage hermetic compressor using CFC- and HCFC-free refrigerants.
How is the LTF-501U purchased and delivered? As capital equipment, the LTF-501U is freight-delivered and quote-based. Confirm doorway, elevator, and floor-load clearances against the 40" x 36" x 79.5" external footprint before delivery.
Ordering & Configuration
The LTF-501U ships as a complete, factory-tested upright-style low-temperature freezer with digital dual-display control, battery-backed alarm, remote-alarm relay, and 20-rack capacity across 4 adjustable (5 compartments). Optional accessories — chart recorder, CO₂/LN₂ back-up, racks, and cold-safety gloves — are configured on the quote.
A remote-alarm relay tie-in to facility monitoring (plus a chart recorder if continuous documentation is required), rack quantity, and cold-safety gloves for the intended tube/box format are configured alongside the core selections below, with lead time and warranty confirmed on the formal quote per Yamato standard capital-equipment terms. Confirm at quote (freight, quote-based):
- Voltage / electrical service — select from 115V / 208V / 230V (60Hz) or 220V (50Hz or 60Hz), single-phase, to match facility power
- Delivery and placement — freight logistics, and doorway/elevator clearance against the 40" x 36" x 79.5" external footprint
- Backup strategy — CO₂ or LN₂ back-up system for excursion protection on critical inventory
Request a quote for the LTF-501U. As freight-delivered capital equipment, this freezer is configured and priced on a formal quote — tell us your voltage, placement, backup, and monitoring requirements and we'll confirm delivered price and lead time. List price: $16,540.00.
Voltage options: Multiple electrical configurations are published for the LTF line (115V / 208V / 230V at 60Hz; 220V at 50Hz or 60Hz, single-phase). Specify required voltage and plug type at order.
