Yamato Scientific IM400W Shaking incubator - Manual (Page 14)

12
Handling Precautions
CAUTION
Defrosting
During operation at low temperatures, the evaporator becomes heavily frosted. This large amount of
frost degrades the freezing power, and the temperature then may not be regulated at the setpoint. The
use of samples having a large water content especially accelerates frost on the evaporator--be careful.
If you observe that the temperature cannot be regulated at the setpoint, press the defrost key to start
defrosting.
After being started, defrosting automatically stops after about ten minutes. While defrosting, the
internal temperature rises--be careful.
Drainage
Condensation inside the incubator or defrost drain drains through the hose at the rear. Provide an
adequate-size drain pan. Check the amount of drainage in the pan frequently to avoid overflow.
Depending on the installation environment and internal temperature, if a glass door is furnished, it may
become fogged.
Placement of Samples
z If the optional shelves are used, allow at least a 30% clearance above the samples on each shelf to
insure accurate temperature control. Too many samples may disable proper temperature control.
The maximum allowable weight is 5 kg(f) per shelf.
z Since the internal temperature is controlled by air circulation, frequent checks should be made that
the samples have not dried up. It is especially true if the sample containers are not covered while
the freezer is operating that the samples may dry up. When placing samples on an optional shelf,
avoid placing them near the fan outlet. This may degrade the temperature control accuracy and the
circulating air may affect the samples themselves.