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!

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