Shel lab 5215 Installation And Operation Manual page 15

TROUBLESHOOTING
Always make a visual inspection of the incubator and control console when troubleshooting. Look for loose
or disconnected wires or tubing which may be the source of the problem.
The incubator is designed so that no internal electrical servicing should be required under normal
conditions. If electrical servicing is necessary, qualified service personnel should perform it only. For
information on where to reach technical service please see the manual cover.
SAFETY, ALWAYS DISCONNECT THE POWER BEFORE SERVICING.
Temperature too high
Display reads "HI"
Temperature too low
Display reads "LO"
Unit will not heat up at all
Chamber temperature unstable
Display and reference thermometer don't
match
Can't adjust set points or calibration
Overshoots set point but stabilizes -
display and Fyrite match
TEMPERATURE
1/ Controller set too high.
2/ Controller failed on – call Customer Service.
Probe is unplugged, is broken or wires to sensor is broken.
1/ Over temperature too low.
2/ Controller set too low.
3/ Unit not recovered from door opening – wait for display to stop
changing.
4/ Unit not recovered from power failure or being turned off.
Shorted Sensor.
1/ Do all controller functions work?
2/ Is the Over temperature Thermostat set high enough? – For
diagnostics, should be fully clockwise with the pilot light never on.
1/ Is ambient room temperature radically changing – either door opening
or room airflow from heaters or air conditioning? – Stabilize ambient
conditions.
2/ Electrical noise – remove nearby sources of RFI including motors,
arcing relays or radio transmitters.
Out of calibration.
1/ turn entire unit off and on to reset.
2/ if repeatedly happens, call Customer Service.
CO2 LEVEL
1/ Internal fan not running or fan fell off.
2/ Plugged Hepa Filter.
Section
9
FOR PERSONAL