Operating Instructions DFO/DFI Series Mechanical Convection Ovens/Incubator
5
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!
1.2 Safety warning
Not applicable for heating, drying or conditioning of specimen which is intrinsically
explosive, flammable or toxic or, which may liberate hazardous substances under
normal operating temperature conditions!
The dielectric strength of the oven may be degraded if after transport or storage in
humid conditions. The oven shall be powered and conditioned at 105
°
C for at least 1h
before commissioned for normal use. Warning, hazard of possible 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,
observation window, area of door seal and exhaust opening!
Pull the operating temperature of the oven as close as possible to the ambient before
attempting to open the door or shut down the equipment. There may be hazards of
burn or fire, misoperation of a fire alarmer, deformation or distortion of the specimen!
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