Chest Style Ultra Low Freezers -40°C To -85°C, 14 cu.ft., Manual Defrost Overview
Chest Style Ultra Low Freezers -40°C To -85°C, 14 cu.ft., Manual Defrost (model ULF501C) from Yamato Scientific is a chest-configuration ultra-low laboratory freezer holding 14 cu.ft. across a -40°C to -85°C range. LabSupplies.com, authorized dealer, stocks this unit for biorepositories and labs storing samples that demand deep, stable cold.
Chamber walls use 14-gauge zinc-coated galvanized steel, while the exterior is 16-gauge steel finished in powder-coated cool gray. A cascade refrigeration system pairs two hermetic compressors with CFC-free R-508B and HCFC-free R-404A refrigerants. Air-cooled condensing relies on two heavy-duty fans, eliminating any liquid coolant requirement.
Operators connect to 115V, 208V, or 230V at 60 Hz, single-phase, with a 220V 50/60 Hz option. Footprint measures 72.5 × 33 × 47.5 inches and the unit weighs 900 lbs. Built in the USA and UL Listed, ULF501C also recovers automatically through a timer system after any power interruption.
Key Features
- Microprocessor digital controller: dual display shows set point and chamber temperature, with a scan button and tamper-proof lockout.
- Cascade refrigeration: two hermetic compressors reach -85°C using CFC-free R-508B and HCFC-free R-404A refrigerants.
- Battery-backed alarm system: audible and visual signals trigger on mechanical or electrical failure, with over/under-temperature settings, silencing switch, and battery test switch.
- Remote alarm contacts: a relay supports remote alarm hook-up for centralized facility monitoring.
- Power failure recovery: an automatic timer system restarts the unit after power is restored.
- Rack capacity: holds up to 30 racks, with a 1/2" access port for probes or sensors.
How to Choose the Right Ultra-Low Freezer
Selecting an ultra-low freezer comes down to matching storage volume, target temperature, and site power to your sample protocols. Weigh these axes .
- Capacity: the ULF501C offers 14 cu.ft. (400 L) and 30-rack storage; confirm your sample inventory and growth fit the interior footprint.
- Temperature range: a -40°C to -85°C span suits long-term storage of cells, tissue, and enzymes that degrade above -80°C.
- Control type: microprocessor digital control with dual display and tamper-proof lockout protects set points from accidental change.
- Voltage and site power: verify your circuit matches the 115V, 208V, or 230V (60 Hz) or 220V (50/60 Hz) single-phase options.
- Footprint: chest-style units need 72.5 × 33 × 47.5 inches of floor clearance plus fan ventilation space.
- Safety and redundancy: battery-backed alarms, remote contacts, and optional CO₂/LN₂ back-up guard against failures during unattended hours.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 14 cu.ft. |
| Temperature Range | -40°C to -85°C |
| Defrost | Manual |
| Interior Capacity | 400 L / 14 cu.ft. |
| Rack Capacity | 30 racks |
| Interior Dimensions | 62" × 20" × 20" (157 × 50 × 50 cm) |
| Exterior Dimensions | 72.5" × 33" × 47.5" (184 × 83 × 120 cm) |
| Temperature Control System | Digital control with dual display (set point and chamber temperature); scan button for temperature setting; tamper-proof lockout |
| Refrigeration System | Cascade type — two hermetic compressors |
| Refrigerant | CFC-free R-508B and R-404A (CFC- & HCFC-free) |
| Condenser | Air-cooled with two heavy-duty fans; no liquid coolant required |
| Alarm System | Battery-operated alarm emits an audible and visual signal on mechanical or electrical failure; over- and under-temperature settings, alarm silencing switch, and battery test switch; relay provided for remote alarm hook-up |
| Power Failure Recovery | Automatic timer system restarts the unit after a power failure |
| Electrical Requirements | 115V / 208V / 230V, 60 Hz, 1-phase; 220V, 50/60 Hz, 1-phase |
| Optional Accessories | Chart recorder; CO₂ and LN₂ back-up system; racks; cold safety gloves |
| Material | Chamber is 14-ga. Zinc coated galvanized steel. Exterior is 16-ga. steel. Power coated cool gray |
| Country of Origin | USA |
| GTIN (Barcode) | 797059929887 |
| Shipping Weight | 900 lbs |
| Dimensions (L × W × H) | 77 × 42 × 55 in |
| Component Size | 14 CF |
| Other Certification | UL Listed |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| ULF-501C | EA | EA |
Documentation
More in This Series
- Platinum Chest Style Ultra Low Freezers -40°C To -85°C, 9 cu.ft., Manual Defrost
- Upright Style Ultra Low Freezers -40°C To -85°C, 18 cu.ft., Manual Defrost
- Upright Style Ultra Low Freezers -40°C To -85°C, 13 cu.ft., Manual Defrost
- Chest Style Ultra Low Freezers -40°C To -85°C, 12 cu.ft., Manual Defrost
- Undercounter Ultra Low Freezers -40°C To -85°C, 3 cu.ft., Manual Defrost
- Chest Style Ultra Low Freezers -40°C To -85°C, 17 cu.ft., Manual Defrost
View all Ultra-Low Temperature Freezers →
Why Buy From LabSupplies.com
LabSupplies.com is an authorized Yamato Scientific dealer, so every ULF501C ships as a genuine unit backed by the manufacturer warranty. Our team supports procurement from spec questions through delivery.
- Authorized Yamato Scientific dealer: genuine equipment with full manufacturer warranty.
- In stock: ready to ship from USA inventory.
- Lab-equipment specialists: dedicated staff answer technical and compatibility questions.
- Direct ordering: place your order online without a lengthy back-and-forth.
Frequently Asked Questions
What temperature range does the ULF501C reach?
The ULF501C operates from -40°C to -85°C. Its cascade refrigeration system uses two hermetic compressors with CFC-free R-508B and HCFC-free R-404A refrigerants to sustain ultra-low temperatures.
What is the storage capacity and footprint of this freezer?
Interior capacity is 14 cu.ft. (400 L), holding up to 30 racks. Exterior dimensions measure 72.5 × 33 × 47.5 inches (184 × 83 × 120 cm), with interior dimensions of 62 × 20 × 20 inches.
What power supply does the ULF501C require?
The unit accepts 115V, 208V, or 230V at 60 Hz, single-phase, plus a 220V 50/60 Hz single-phase option. Confirm your facility circuit matches before installation.
What materials are used in the cabinet construction?
The chamber is built from 14-gauge zinc-coated galvanized steel. Its exterior uses 16-gauge steel finished in powder-coated cool gray for durability.
How does the freezer protect samples during a power or equipment failure?
A battery-operated alarm emits audible and visual signals on mechanical or electrical failure. Over- and under-temperature settings, a silencing switch, a remote alarm relay, and an automatic timer that restarts the unit after power returns all safeguard stored samples.
Does this freezer require manual defrost?
Yes, the ULF501C is a manual defrost chest freezer. Air-cooled condensing with two heavy-duty fans removes the need for any liquid coolant.
