Boekel Scientific 260010-2 MicroCooler II - Manual (Page 6)

5
will begin cooling to the set temperature. The Green Cooling indicator LED will indicate
the Cooling Function. A blinking indicator LED shows that the system is nearing the
temperature set point and will stabilize to the set temperature.
4.4 Operating the MicroCooler II
The MicroCooler II is rated to work at temperatures between ambient and 18
°C below
ambient, typically 4
°C. The MicroCooler II may be programmed to run at temperatures
below 4
°C; however the MicroCooler II’s ability to reach temperatures below 4°C is
dependent on the ambient temperature and the relative humidity in the lab environment in
which it is operating.
The MicroCooler II has a 5 ¾” x 2” well which accommodates a rack holding up to 21 x
1.5 mL microcentrifuge tubes. This rack is supplied with the unit. The MicroCooler II’s
well has a one-piece construction which allows for the use of water or other liquids in the
well. For best temperature transfer uniformity and most efficient heat transfer, fill the
cooling well with water to a depth of about 3 cm. As a matter of safe practice, volatile
and flammable liquids should not be used in the MicroCooler II well. For optimum
performance, The MicroCooler II should be operated in a cool, dry environment.
Note: The use of the supplied Well Lid is recommended to ensure maximum
performance and efficiency of the system.
5. Accessories
5.1 Well Lid
Boekel Part Number B1702577
5.2 Rack
Part Number 260111
6. Fault Diagnosis
Symptom
Possible Cause Action Required
1. Unit does not operate a. Unit not switched on
b. Unit not plugged into
power supply
c. Fuses blown
d. Power supply failure
a. Switch on
b. Plug in, switch on
c. Replace fuses per 8.2
d. Check that other electrical
appliances on the same
circuit are working
2. Well temperature does not
rise when expected to
a. Actual temperature is
higher than set
temperature
a. Check set temperature