Shock Freezer TPSU Series -50°C to -80°C
GENERAL STRUCTURE
– External cabinet made of zinc-plated and/or enameled steel sheets, o r, upon request, SI 304 stainless steel satin finish.
– Insulation in non-CFC, non-HCFC foamed polyurethane
– Internal casing in AISI 304 (or AISI 316 upon r equest) stainless steel, with polished exter nal BA finish for maximum resistance and cleanliness; LIFETIME WARRANTY ON STEEL PARTS
– Triple-step seal in silicone rubber for greatest prevention against air loss and ice formation; gaskets with almost unlimited durability.
– Gasket heating by means of the r efrigerant pipes on the overheated-steam side; the safest solution against ice formation, more reliable and with greater energy saving (in fact, it does not use additional sources of heat like electric resistances, etc.)
– Complete reheating compensation valve to equalize inter nal and external pressure after opening and closing the door: greatly facilitates being able to open the door after it has been opened not long ago.
– Four internal stainless steel shelves, standard in vertical models
– Insulated counter doors (in vertical models) with 20-mm. poly urethane foam, to minimize cold loss when the external door is opened;
– Insulation panels (in horizontal models) with 20-mm. polyur ethane foam, to minimize cold loss when the external door is opened;
– Highly ergonomic closing handle (in vertical models) to facilitate closi ng: just one hand and minimum force applied
– Locking handle with self-raising hinges (in horizontal models ) for maximum ease when closing and maximum operator safety.
– Lock and key for all locks
– Loading System: Our innovative solution gives you the possibility to quickly load the freezer with the help of a trolley. This way the whole racket system is inserted into the freezer, giving you the chance to freeze the plasma, in the fastest time, in 2.15 minutes.
– Pivoting wheels for maximum freezer maneuverability inside the laboratory
– Insulation with CFC- and HCFC-free polyurethane resin foamed on site, with an average thickness above 140 mm
– Lock with transponder/badge available (optional); the PK (Per sonal Key) device comes complete with badge reader, management electronics, stabilized power supply at 12 Vdc 3 A and microelectronic security pistons. It is integrated with the closing system.
- Description
Description
GENERAL TECHNICAL INFORMATION:
Capacity: Different options as per the table below
Chamber Temp.: Adjusted in the range between -40°C to -85°C (tolerance ± 2,5°C )
Body: Sheet metal zinc-plated RAL 9010
Chamber: Stainless steel, material 1.4301
Insulation: 150 mm Polyurethane, 0,19Watt/m2 K acc. DIN 52612
Door: Hermetic sealed, lockable, chromed joints full door frame heating
Shelf: Different options as per the table below
Shelf doors: For better insulation there are additional inner shelf doors
Refrigerator: Half hermetic compressor, process water cooled on the shock freezer top, shock-free mounted
Evaporator: High-performance evaporator, with fans to ensure
a high and even air circulation
Microprocessor: Temperature controller, network dependent with digital LED display/
touch panel, alarm signal if chamber temperature is too high with optical
and acoustical report, acoustical signal printable
REFRIGERATION
The refrigeration system for ULT and Shock freezers is fully sealed; it uses a cascade circuit with innovative components and fluids to obtain, together, maximum cooling reliability and performance; it has 2 silent, airtight compressors (value Leq dB (A) < 55); with a high r efrigeration capacity, furnished with magneto-thermal protection and pressure gauge to monitor maximum condensation pressure (MR): full reliability and no failures in the 1st stage; immediate identification by the user with recovery ability. The condenser surface (air with thermal r eturn above 2,610 Watt, with room T +25°C) is very large (with tubeless-execution exchangers) to endure even the most severe environmental and work conditions and to reduce power consumption.
The expansion of the refrigerating fluids is obtained through capillary tubes; the expansion occurs in fixed exchangers; the evaporating surfaces are made of: copper coils (thermally) connected to the entire external peripheral surface of the internal casing for horizontal freezers, and evaporation trays in AISI 304 stainless steel – placed inside the internal chamber for vertical freezers; both solutions guarantee high refrigeration capacity, very fast cooling (reduced pull down and recovery times), and elevated uniformity of the internal temperature.
The whole thermal fluid dynamics circuit is built to provide maximum functionality (efficiency, reliability) and facilitate maintenance operations. The refrigerants being used are non-toxic, non-flammable, non-explosive and environmentally friendly (maximum respect for the environment): HC free, CFC free, HCFC free (ODP = OZONE DEPLETION POTENTIAL = 0).
The freezers at -40°C have the same construction characteristics as t hose of the -85°C, with the exception of the second compressor system in cascade.
VOLTAGE STABILIZER
4,000-VA voltage regulation, capable of compensating the fluctuations of the utili ty power supply (± 15%), protecting the compressors and guaranteeing a long useful life.
Defrosting: Automatic defrosting, should be initiated by user, pre-programmable
up to 7 days in real time
Cooling-system: After receiving the defrost end temperature the deep freeze system will
switch on automatically. The shock room will be adjusted to the preselected
temperature.
It depends on the daily usage how often you have to defrost;
hereby it’s important that the insertion of the deep freeze goods happens
fast. Resulting from our many years of experience we know that the deep
freeze system (when daily used) should be defr osted within 158 hrs., one
defrosting cycle will take up to 36 hrs.
Defrost water: Will be led away from shock freezer via a condensate pump into the
technical room and into a sewage disposal.
TECHNICAL DATA
Voltage: 400V – 50Hz – 3ph
Acoustic pressure: 71 dB (A)
Cooling liquid: 1st stage R 404a CFC free
2nd stage R 23 FCF free
Process water: temperature VL. +8°/+12° RL. +19°
Water flow: at full performance approx. 900ltr./hr.
Pressure loss: 0.20 bar
| MODEL NAME | CAPACITY | DIMENSIONS MM | |
| Net volume/ number of chambers | Outside (WxDxH) | Interior (WxDxH) | |
| TPSU / 800LSF | 800L / 4C | 1720 x 800 x 2400 | 920x590x1500 |
| TPSU / 700LSF | 700L / 4C | 1600x880x2400 | 800x590x1500 |
| TPSU / 600LSF | 600L / 4C | 1600x880x2200 | 800x590x1300 |
| TPSU / 500LSF | 500L / 3C | 1600x880x1990 | 800x590x1140 |
| TPSU / 400LSF | 400L / 2C | 1450x880x1990 | 650x590x1140 |
| TPSU / 280LBF | 280L / 2C | 1200x880x2200 | 800 x 590 x 300 |
| TPSU / 185LUF | 185L/1C | 1200x880x1930 | 800 x 590 x 400 |
| TPSU/100LUF | 100L /1C | 940x840x1930 | 540 x 540 x 400 |
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