Fault diagnosis, Catastrophic heater condition – Boekel Scientific 230502-2 Little S.H.O.T. III User Manual
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230542
Multi-Tube Carousel (requires clips)
230210
Bag of Clips for 1.5/2.0mL tubes (50 pieces per package)
230215
Bag of Clips for 15mL tubes (50 pieces per package)
230250
Bag of Clips for 50mL tubes (50 pieces per package)
6. Fault Diagnosis
Symptom
Possible Cause
Action Required
1. Unit does not operate
a. Unit not switched on
a. Switch on
b. Unit not plugged into
power supply
b. Plug in, switch on
c. Fuses blown
c. Replace fuses per 8.2
d. Power supply failure
d. Check that other
electrical appliances on
the same circuit are
working
2. Chamber temperature
does not rise when
expected
a. Actual temperature is
higher than set
temperature
a. Check set temperature
b. Temperature control
circuit fault
b. Have unit checked by
competent person
c. Timer cycle has ended
c. Turn timer off.
3. Temperature continues
to rise when not
expected
a. Actual temperature is
lower than set
temperature
a. Check setting
b. Temperature control
circuit fault
b. Have unit checked by
competent person
4. No rotation, Display
illuminated
a. Carousel switch not on
a. Turn Carousel switch on
b. An obstruction prevents
Carousel rotation
b. Remove obstruction
c. Carousel/Spindles are
loose
c. Tighten set screws w/hex
key
Catastrophic Heater Condition:
In the event that the chamber temperature
would reach 120°C the systems heater will be turned OFF, and will on longer heat the
chamber. Also the heat indicator lamp on the control panel will remain illuminated and
an Alarm will sound for a short period of time. To reset the unit back to normal operation
cycle the power (OFF/ON) at the units power switch on the rear of the oven.
IF THIS CONDITION PERSISTS HAVE THE UNIT CHECKED BY A
COMPETENT PERSON BEFORE CONTINUING THE USE OF THE
HYBRIDIZATION OVEN!