＊
Except the case of releasing the air from
the pump, do not turn on and off each
switch quickly.
If you do so, switches will be damaged
and cause malfunction.
Drain stopcock
Drain hose
If you do not circulate the liquid, pump may suck
the air. In such a case, release the air from the
pump.
Make sure that cooling liquid flows from drain
after removing drain stopcock, and attach the
stopcock again. After that, turn on and off the
circulation pump switch for a few times to release
the air.
＊
If you supply water to circulation system, water
level of low temperature circulation bath will be
lowered. So refill the water.
Add water till the cooling coil is immersed
completely.
＊
If the cooling coil is exposed while the unit works,
cooling capability will be worsened.
Removing air from the pump
(2) Press the [Run/Stop] key. Temperature control starts.
・
” Control Status LED (Run/Stop) ” illuminates.
・
The refrigeration unit is ON at the setting temperature
+2
℃
. While the freezer is on, “ Refrigeration unit LED
(Refrigerator) ” stays on.
The refrigeration unit will turn off when the measured
temperature falls below setting temperature -2
℃
. The
refrigeration unit LED (Refrigerator) goes off.
＊
Soon after starting the refrigeration unit, the cooling
capacity is low and the bath temperature may rise by
recirculating liquid to the circulation line. As it works
for a while, its cooling capacity becomes normal.
Please observe for about 30 minutes whether it cools
or not before judging it as failure.
When the refrigerator is stopped once, the
refrigerator does not operated for about 80
seconds even when the measured
temperature is high by about 2
℃
or more.
Protection timer for refrigeration unit
(2) Starting control
17
Run
Stop
Pump
Alarm
Refrigerator
Pump
Set
PV
Run/Stop
℃
