Troubleshooting Guide; Technical Support / Service - Labnet I5311-DS Instruction Manual

TROUBLESHOOTING GUIDE

PROBLEM
Oven will not power up or not heat
Shaking platform will not operate
Temperature too high
Chamber temperature goes above set
point and settles back to set point
Temperature will not remain stable
or display shows "LO"
Indicated temperature is unstable
Temperature is too low
Unit will not heat above temperature
that is below set point
Temperature display and reference
thermometer do not match
Cannot adjust set point or calibration
or display persists call service
Unit calibrated at one temperature
and not at another

TECHNICAL SUPPORT / SERVICE

Should your I-5311-DS shaking incubator require service, call Labnet International's Service
Department at 732-417-0700 between the hours of 9:00am and 5:00pm EST. If service
necessitates the return of the unit to Labnet's Service Department, a return authorization (RA)
number must first be obtained and a decontamination certificate completed. The unit must be
thoroughly decontaminated before shipping. The unit must then be sufficiently packed for
shipment. Any shipping damage on returned units will be the customer's responsibility.
POSSIBLE SOLUTION
Check power cord, outlet and unit circuit breaker
Check timer set to Hld or a time setting
Check that nothing is blocking shaker platform
Press shaker STOP/START button
Check set point and readjust if necessary
Check calibration
Normal operation in initial heat up or if door
opened for a long period
Check that set point is at least 5C above ambient
(or 10°C above ambient when shaker is on) which is
minimum operating point
A slight variation of +/-0.1C is normal. Larger fluctua-
tions may be ambient variations from drafts, door
opening and closing, a fan obstruction or failure or
electrical noise from RFI (motors, etc.)
If door has opened, unit may not have recovered yet.
Confirm temperature set point.
Safety thermostat set too low.
Confirm set point. Check temperature of chamber
with a thermometer and recalibrate if needed.
Be sure that unit has been allowed to stabilize for
1 hour. Thermometer should be suspended in
the chamber and not touching any surface. Only
certified reference thermometers should be used.
Turn unit off for 5 seconds to reset. If problem
persists, call for service.
This can be a normal condition if temperatures or load
vary widely. For best accuracy, calibrate at set point