Appendix E: Operational Use; General Operating Conditions; Operational Use; Operation - Elitech FreezePoint 6000 Series User Manual

Appendix E: Operational Use

General operating conditions

The FreezePoint
To ensure that the systems can be put into operation without trouble and work reliably, the installation site
has to be selected so that it is free of dust, dirt, vibration and draft and without indirect heat exposure from
sunlight or electric heaters.
In addition, the air inlets and outlets on the system must be unobstructed so that heat and moisture
produced by the cooling systems can be removed.
Environment
Temperature range
Relative humidity
Maximal operating altitude

Operational use

The FreezePoint
operating hours per year.
For continuous use in process analytics with up to 8000 operating hours per year, the use of a redundant
measuring system for preventive maintenance management is advisable to ensure long life and faultless
operation of the systems.
Useful life
Operational use
Operating time/overall system

Operation

The systems feature an advanced electronic measuring system with rules-based cooling systems for the
production of ice crystals (required to trigger the crystallization of the sample) and for undercooling the
sample solution. Naturally, two key factors affect the measuring procedure: the ambient temperature and
humidity.
What effects can conceivably or expectedly occur on the upper and lower cooling systems and what do
they mean for measuring operation?
Generally, the systems can be used for continuous or shift operation (24/7). No safety-relevant restrictions
exist. However, the metrological effects listed in the table can occur. They prohibit continuous operation
and instead require the system to be shut off so that the upper cooling system can defrost. We strongly
advise against accelerating the defrosting procedure using a hairdryer or another heat source, both during
operation or while shut off. Any residue present in the upper elevator unit could collect and hinder the
subsequent formation of ice crystals or block the rotation of the initiation needle. Another conceivable
scenario is a shortened overall service life of the upper cooling system.
For reasons of technical work safety and in order not to prematurely shorten the expected service life of the
Peltier elements used, we generally recommend shutting the systems off after use. If this is not possible
due to the measuring routine, the system must be shut off at least once every 24 hours for approx. 30
minutes to prevent the excess formation of ice crystals on the upper cooling system or moisture in the
lower cooling system and a possible contamination of the measuring system.
Freezing Point Osmometer is designed exclusively for operation within closed rooms.
®
Specification
Freezing Point Osmometer is designed for normal lab analytics with approx. 2500
®
Specification
Value
50-86 (10-30)
80 (non-condensing)
6562 (2000)
Value
2500
5
Unit
°F (°C)
%
ft (m)
Unit
Hours/year
years
108