LABEC Z-ZHWY-1112B User Manual
Page 7
Laboratory Equipment Pty Ltd. 2 LEVEL INCUBATOR SHAKER 2013 VER1.01
9. Defrosting
Operation the unit at a low temperature for a long period of time causes the buildup of
frost, which degrades the freezing performance and may disable the temperature from
being controlled at the setpoint. The defrosting function guarantees the unit to operate
smoothly and continuously in such a case. Defrosting function is set via the following
steps:
• First press the
Set/Confirmation
key, then press the
Increase
key to enter the
password 9. Press the
Refrigeration
key, the unit enters into refrigeration mode
(first stage).
• Press the
Refrigeration
key again, the unit enters into defrosting timer setting
mode (second stage). Defrosting timer value can be set via the
Increase/Decrease
key.
• Press the
Refrigeration
key once more, the unit enters into defrosting time
period setting mode. Defrosting time period can be set via the
Increase/Decrease
key.
• To confirm the new setting, press the
Set/Confirmation
key.
Defrosting Timer Setting
refers to the function by which the unit starts defrosting every given time
period. For example, if the defrosting timer value is set at 1, the unit starts defrosting every 1 hour.
If the defrost timer value is set at 2, the unit starts defrosting every 2 hour. However, if the defrost
timer value is set at 0, the unit does not start defrosting at all.
Defrosting Time Period
refers to the
time span
from the moment the unit starts defrosting till it
exits defrosting mode. For example, if the defrosting time period is set at 1, the unit will defrost
for 1 minute. If the defrosting time period is set at 2, the unit will defrost for 2 minutes.
Due to the specific application conditions, the defrosting timer value and defrosting time period
may vary greatly. However, the following values can be viewed as a starting point or general rule.
Defrosting Timer Value: 6
Defrosting Time Period: 3
If the above values are set, the unit will defrost for 3 minutes every 6 hours under refrigerated
operation. During defrosting, the water tray enclosed in the package must be taken out for fetching
the melted water.