16
Controller timer resets on its own
1/ Confirm that power from wall is consistent and within
specifications.
2/ Call Customer Service with serial number.
Front panel displays are all off
1/ Check connections to the temperature display control
board and assure that all are tight and in the correct
orientation.
2/ Check for wire damage.
Unit or wall fuse/circuit breaker is
blown
1/ Check wall power source.
2/ Compare current draw and compare to specs on data
plate.
3/ See what other loads are on the wall circuit.
Unit will not turn on
1/ Check wall power source.
2/ Check fuse/circuit breaker on unit or in wall.
3/ See if unit is on, e.g., fan or heater, and just controller is
off.
4/ Check all wiring connections, especially around the
on/off switch.
Unit is smoking – Out of box
This is not an uncommon occurrence when first operating
new units. Put unit under vent and run at high temperature
for one hour until smoke dissipates.
Contamination in chamber
1/ See cleaning procedure in section 7.0.
2/ Develop and follow standard operating procedure for
specific application; include definition of cleaning technique
and maintenance schedule.
Contamination in sample
1/ See “Contamination in chamber”.
2/ Reduce air flow in chamber by dampening down exhaust
port; be sure to verify adequate temperature uniformity at
the reduced air flow.
3/ Protect open samples from areas of maximum air
current, e.g., inlet air ducts.
