Shellab SSI5R-2 - Manual (Page 17)

SHEL LAB SI6/SI6R Shaking Incubator Operational Manual
17
What is the problem? Possible Causes To solve the problem...

Over Temperature
Protection (OTP) is set too
low.
- Or -


Heating element failure.
If this doesn’t solve the
problem...
3. Be sure your reference
thermometer is certified.
If this is not the problem...
4. Turn the OTP fully clockwise.
If this doesn’t solve the
problem...
Call customer service. See
page 21

The Main Temperature Control
displays “LO”.

Probe has shorted out.

Call customer service. See
page 21
The unit will not heat up to set
point.

The amperage and voltage
of the unit’s power source
do not match the unit’s
requirements.
- Or -


Over Temperature
Protection (OTP) is set too
low.

1. Make sure the power source
matches the data plate. (ie.
voltage, hz, etc.)
If this does not solve the
problem...
2. Turn the OTP clockwise until
the heating light or safety
light turns on.
The unit will not heat at all.

The OTP is not set high
enough.
- Or -


Temperature Controller
failure.
- Or -


Element failure.

1. For diagnostics purposes,
turn the OTP fully clockwise.
See OTP section.
Call customer service. See
page 21
The indicated temperature inside
the chamber is fluctuating more
than + 0.1

C.

The unit has not had time to
stabilize to ambient
conditions.
- Or -


Temperature sensor not
positioned properly.
- Or -


The temperature sensor is
faulty.
- Or -


Electrical noise

1. If you have just turned the
unit on, wait 24 hours for the
incubator to stabilize at a
warmer temperature.
If this is not the problem...
2. If you have just opened the
unit’s door, wait for the
temperature to stabilize.
If this is not the problem...
3. Stabilize ambient conditions.
If this is not the problem...
4. Call customer service. See
page 21
Cannot adjust set points or
calibration.

This is a controller failure.
 1. Turn entire unit off and then
on to reset the unit. This
may temporarily solve the
problem, but controller may
be faulty.
If this does not solve the
problem...
2. Call customer service. See
page 21