Ultra-Low-Temperature Freezer
Water cooling series

Haier Biomedical water-cooled ultra-low temperature freezers are designed to strictly meet storage requirements for plasma, biological materials, vaccines, reagents, test specimens and other important samples. They are perfect for installation in hospitals and clinics, blood banks and medical research facilities, and wherever it is important to dissipate the heat of cooling equipment through chilled water.


  • SmartFrequency technology
  • State-of-the-art touch screen control and control system
  • Energy savings of up to 20% due to higher efficiency
  • Approximately 90 % of compressor waste heat is dissipated through cooling water, resulting in very little impact on the laboratory environment
  • Less air conditioning required for comfortable conditions in the lab
  • Low noise level
  • Intelligent refrigerant control
  • High quality hermetically sealed compressors also for industrial use
  • Protection in case of pressure failure due to lack of water flow

Control system

Reliable performance

  • The temperature inside the cooling chamber can reach up to -86°C with uniformity within 5°C
  • Wide range of operational voltage from 200V to 260V ­which   allows operating the units even in areas of poor electric supply 

Temperature / Cooling system

  • Microprocessor control system, control range from -40°C to -86°C in increments of 1°C
  • Deep freeze system designed and manufactured under best known practice with components of highest possible quality

Ventilation technique by EBM Papst

  • Reliability test carried out and passed on all models, including ageing test of the control electronics at 85°C and 85% relative humidity
  • Special design of the control system for a well balanced cascade cooling system

Protection devices

  • UL and CE certified for safety in use
  • USB interface for downloading temperature data
  • Safety padlock at the outer door
  • Operable at ambient temperature from 10°C to 32°C
  • Input voltage and ambient temperature are displayed simultaneously to ease supervision of ambient conditions
  • Lockable door handle and/or individual key to avoid that other people, also having a deep freezer, can have access to your valuable samples. Furthermore there is space for an additional padlock for extra safety.
  • CO2 safety system including control, alarm backup and CO2 valve


  • 20 years guaranty on the VIP+ isolation
  • 6 years guaranty on the compressor (connected with a maintenance contract)


  • 72h-Battery-Back-Up: Accu-buffering for printer and microprocessor with touch-screen
  • Stainless Steel hinge: Massive hinges on the doors
  • Reindorced removable shelves: For maximum weight loading; adjustable in height
  • PT 100 temperature sensor: In stainless steel housing
  • Remote-alarm: Connection to the GLT in place
  • USB-Interface
  • Vacuum-Release: Port to vacuum drain
  • Prefilter: Simple to exchange


  • Circular paper disk printer: For temperature, fix installed in the control board. As standard equipped with power supply for permanent operation by battery (independent from mains). The removable circular printer paper disks are for 24 hours or 7 days. The actual temperature is written onto the diagram paper by a black felt-tip pen. The temperature is measured inside the chamber.
  • Storage Racks: Optional, ergonomic designed racks for easy storage; In different sizes available
  • CO2-Backup System
Model Type DW-86L828W DW-86L959W
Cooling performance (°C) -86 -86
Temp. range (°C) -40 – -86 -40 – -86
Power supply (V/Hz) 208-230/50/60 208-230/50/60
Power (A) 6 7
Capacity (l/cft) 828/29,2 959/33,9
Net/gross weight (ca.) (kg) 380/415 450/485
Inner dimensions (B×T×H, mm) 870 × 716 × 1310 1016 × 716 × 1310
Outer dimensions (B×T×H, mm) 1145 × 998 × 1980 1296 × 998 × 1980