Operating Instructions WBL-118 Refrigerated bath and circulator
4
Chapter 1 Safety instructions
1.1 Normal operating environment
The equipment is designed for safe operation under ambient conditions as follows:
–
indoor use;
–
altitude up to 2,000 m;
–
temperature 5 °C to 40 °C;
–
maximum relative humidity 80 % for temperatures up to 31 °C decreasing linearly to 50 % relative
humidity at 40 °C;
–
mains supply voltage fluctuations up to
±
10 % of the nominal voltage;
–
transient overvoltage up to the levels of overvoltage category II;
–
temporary overvoltages occurring on the mains supply;
–
Pollution degree 2 or less of the intended environment;
Excessive high or low temperature and/or humidity will significantly degrade electric
safety of the equipment!
Note the effect of the altitude on the boiling points of the heat transfer liquids!
Note the effect of the ambient temperature on the minimum operating temperature
and cooling capacity of the equipment connected for optional cooling!
1.2 Safety warning
When heating, cooling and conditioning with specimen or application system which is
intrinsically explosive, flammable or toxic or, which liberates hazardous substances as
result of reacting, dissolving or mixing under operating temperature range for normal
use, safety acts and regulations for the particular chemicals and experimental
laboratory shall be observed!
Not applicable for specimen or application system which develops tremendous energy
as result of reacting, dissolving or mixing under operating temperature range for
normal use!
The dielectric strength of the equipment may be degraded if after transport or
storage in humid conditions. The equipment shall be powered as for normal use and
conditioned at its maximum operating temperature, whichever is smaller, for at least
1h before commissioned for normal use. Warning, hazard of electric shock during the
dry-out!
1.3 Caution
Caution, Risk of burn hazard!
Do not touch or approach parts or area with high temperature, for example, bath
cover and the heat transfer liquid when maintained at operating temperature over
60
°
C!
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