Instruction manual

17
MECHANICAL
Door not sealing
1/ check physical condition of gasket
2/ assure that gasket is in original location
Motor doesn't move
1/ if shaft spins freely: check connections to motor and check
voltage to motor
2/ if shaft rubs or is frozen, relieve binding and retest
Motor makes noise
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.
OTHER
Controller on at all times - "locked-up"
1/ Adjust set point to room temperature. If the light goes out
but 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
specs
2/ call Customer Service with serial number
Front panel displays are of
f
1/ 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, esp. around the on/off switch
Unit is smoking
–
out of box
1/ put unit under vent and run at full power for one hour.
2/ follow special burn in procedures in section 6.0.
Contamination in chambe
r
1/ see cleaning procedure in operator’s manual
2/ develop and follow SOP for specific application; include
definition of cleaning technique and maintenance schedule
Contamination in sample
1/ see “Contamination in chamber.