Shellab SGO5-2 - Manual (Page 13)

13
1) Make sure that the fan or blower wheel is not contacting its housing.
Adjust the motor mounting bracket position to re-center the fan or
blower wheel, if necessary.
2) Check the fan or blower wheel for damage or out of balance
condition. Replace the fan or blower wheel if it is damaged or out of
balance.
3) Turn the motor shaft to make sure that it spins freely. If it binds or the
bearings make a rubbing or scrapping sound then replace the motor.
Door not sealing
1/ Adjust hinge blocks or twist the door.
2/ Confirm that unit has not been damaged and body is not square.
3/ Check physical condition of gasket for tears or punctures.
OTHER
Controller on at all times - "locked-up"
1/ Adjust set point to room temperature. If the unit is still heating,
replace the solid state relay.
2/Turn unit off and on to reset.
3/ If cannot change any condition on the front panel, call Customer
Service.
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 disipates.
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.