Shel lab 5215 Installation And Operation Manual page 17

Solenoid valve buzzing
Controller on at all times - "locked-up"
Front panel displays are all off
Unit will not turn on
Contamination in chamber
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.
After removing solenoid clean with alcohol for carbon build-up then blow
out. Check valve seat or channels for contamination. Check CO
and/or grade of CO used. If seat is worn, replace.
2
OTHER
1/ turn unit off and on to reset.
2/ if cannot change any condition on the front panel, call Customer
Service.
Make sure unit is plugged in.
1/ Check wall power source.
2/ Check fuse/circuit breaker on unit or in wall.
1/ see cleaning procedure in Maintenance Section.
2/ develop and follow Standard operating procedure for specific
application; include definition of cleaning technique and maintenance
schedule.
filter
2
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