DHC8 ACFT DISPATCHED WITH INCOMPLETE MAINT PROC. REPAIRED COMPONENT LEFT UNPOWERED WITH CIRCUIT BREAKER PULLED. PROC IMPROPERLY DOCUMENTED.

Narrative

OUR COMPANY USES 2 DIFFERENT TYPES OF COLLARS FOR PULLED CIRCUIT BREAKERS. RED COLLARS ARE USED FOR CIRCUIT BREAKERS THAT HAVE BEEN PULLED TEMPORARILY FOR AN MEL. WHITE TIE-WRAP COLLARS ARE USED FOR CIRCUIT BREAKERS THAT HAVE BEEN PULLED PERMANENTLY FOR ITEMS THAT ARE NOT INSTALLED IN THE ACFT. DURING THE FIRST FLT OF THE DAY; I DISCOVERED A CIRCUIT BREAKER WITH A RED COLLAR BUT NO ASSOCIATED WRITE-UP IN THE MAINT LOGBOOK. THE CIRCUIT BREAKER WAS LABELED 'CLG FAN.' NEITHER MYSELF NOR THE FO KNEW WHAT IT WAS FOR. FOLLOWING COMPANY PROCS; I CONTACTED MAINT CTL TO ASK THEM ABOUT THE COLLARED CIRCUIT BREAKER. AFTER APPROX 10 MINS; I WAS TOLD THAT THE CIRCUIT BREAKER WAS FOR AN AVIONICS COOLING FAN THAT WAS NOT INSTALLED IN THE ACFT. I WAS TOLD IT JUST HAD THE WRONG COLLAR ON IT. MAINT SAID WE WERE LEGAL TO GO AND THEY WOULD CHANGE THE COLLAR UPON ARR AT DEST. AFTER ARRIVING AT DEST; IT WAS DISCOVERED THAT THIS ACFT DID HAVE THE AVIONICS COOLING FAN INSTALLED. THE FAN HAD BEEN MEL'ED PREVIOUSLY AND THE CIRCUIT BREAKER WAS PULLED AND COLLARED. AFTER REPAIRING THE FAN; MAINT FAILED TO RESET THE CIRCUIT BREAKER AND OPERATIONALLY CHK THE FAN WAS WORKING. WHEN I CONTACTED MAINT CTL THEY FAILED TO RESEARCH RECENT MEL'S ON THE ACFT. IF THIS HAD BEEN DONE; THEY WOULD HAVE REALIZED THAT CIRCUIT BREAKER SHOULD HAVE BEEN RESET.