Shel lab HF2-2 Installation And Operational Manual page 15

Controller timer resets on its own
Front panel displays are off
Unit or wall fuse/circuit breaker is blown
Unit will not turn on
Unit is smoking –out of box
Contamination in chamber
Contamination in sample
SERVICE
If this product should require service, contact your service representative. For information on
where to reach customer service please see the front cover of this manual. Should return of this
product be necessary a return Authorization number must be obtained and the product shipped
according to your representatives instructions to the indicated service center.
authorization number is not obtained then the product will be returned back to the sender. To
insure prompt handling, the return authorization number should be placed on the outside of the
package and a detailed explanation of the return enclosed with the item. After receiving the
Return Authorization number, the item must be received within 30 days if not the return
authorization will be void.
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
1/ confirm that power from wall is consistent and within specs
2/ call Customer Service with serial number
1/ Check for wire damage.
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
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
Put unit under vent and run at full power for one hour.
1/ see cleaning procedure in operator's manual
2/ develop and follow SOP for specific application; include definition of
cleaning technique and maintenance schedule
1/ see "Contamination in chamber"
2/ reduce air flow in chamber by dampening down inlet restrictor; 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
If a return
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