NOTES : 
VERIFICATION VENTILATEUR CF-10-1CG
NUMERO IPSO E002525
N/S CA176235

CUSTOMER HAS HAD MAJOR PROBLEMS WITH THE FAN MOTOR, WHILE HE WAS OPERATING THE FAN THE PREVIOUS EVENING, 
THE MOTOR WOULD BE DRAWING APPROXIMATELY 80AMPS OF POWER WHILE IT IT RATED AT 40AMPS NOMINAL CURRENT, THE 
TEMPERATURE OF THE MOTOR WOULD CLIMB TO APPROXIMATELY 180 CELCIUS.  THE CUSTOMER THEN DECIDED TO MODIFY 
THE INTAKE FUNNEL IN ORDER TO REDUCE AIRFLOW TO THE FAN (INSTEAD OF ADJUSTING HOW MUCH OF THE IMPELLER IS 
EXPOSED BY ADJUSTING IT ON THE MOTOR SHAFT, IN FAIRNESS TO THE CUSTOMERS DEFENCE HE HAD EXTREMELY HIGH 
VALUE CROP IN THE BIN AND COULD NOT AFFORD TO HAVE A FAN FAILING DURING THE NIGHT)  AFTER BEING ABLE TO 
REDUCE THE CURRENT DRAW FROM THE FAN DOWN TO 37AMPS, THE FAN 10 HOURS LATER IS STILL RUNNING AT 87 CELCIUS, 
WHICH IS SLIGHTLY MORE THAN TWICE THE NOMINAL OPERATING TEMPERATURE OF THE FAN MOTOR.

THE HYPOTHESIS OF WHAT IS MOST LIKELY HAPPENING IS THAT THE IMPELLER UNIT ON THE FAN BEING MADE OF CAST IRON 
AND GIVEN ITS SHEAR WEIGHT, THAT EVEN IF IT IS POSSIBLE TO BRING THE CURRENT DRAW OF THE FAN MOTOR DOWN TO A 
NOMINAL CURRENT THAT IT IS STILL ALMOST IMPOSSIBLE FOR THE MOTOR TO COMPLETELY OVERCOME THE CENTRIFUGAL 
FORCE OF THE IMPELLER AND AS A RESULT THE MOTOR IS SLIPPING TO A CERTAIN EXTENT (DID NOT HAVE A TACHOMETER TO 
MESURE SPEED OF MOTOR ON HAND)  HOWEVER IF THE MOTOR WHERE TO THEORETICALLY BE TURNING AT 1400 RPM 
INSTEAD OF THE 1750 RPM AS IT IS SUPPOSED TO, IT WOULD BE MORE THAN LIKELY THAT THE MOTOR THAT THE LOST 
PERFORMANCE OF THE MOTOR WOULD BE CONVERTED INTO HEAT AND WOULD NOT BE ABLE TO PROPERLY DISSIPATE IT 
CAUSING THE MOTOR TO RUN AT MORE THAN TWICE THE RATED TEMPERATURE.

WE HAVE HAD SIMILAR ISSUES WITH THE CF-10-1CG\'S BEFORE IN THEK4 PASTK, IT DOES NOT SEEM TO BE AS MUCH OF AN 
ISSUE WITH THE 600V 3PHASE FANS, BUT TO RESOLVE THE PROBLEM A CF-15-1CG WOULD BE PUT IN PLACE.

FOR THE CLAIM, WE ARE CLAIMING 
-TRANSPORT+TIME FOR THE DISPLACEMENT OF OUR TECHNICIAN TO EVALUATE THE SITUATION
-TRANSPORT+TIME FOR INSTALLATION IN ORDER TO REPLACE THE CF-10-1CG BY A CF-15-CG
-DIFFERENCE IN $ BETWEEN THE TWO FANS FOR THE CUSTOMER
-PARTS TO REPAIR THE CF-10-1CG

WE WILL HAVE TO EVALUATE IF THE CF-10-1CG\'S SHOULD BE RETURNED TO GSI IN ORDER TO AVOID THIS ISSUE IN THE 
FUTURE.

ADDITIONAL INFORMATION
BIN SIZE : 18\'-4SECTIONS
VOLTAGE AVAILABLE AT FAN MOTOR WHILE FAN RUNNING 220V (CUSTOMER ALSO TRIED WITH A GENSET AT 240V, THIS MADE 
NO DIFFERENCE)
 


VEHICULES : 


CLAIM : 
1- LES PIÈCES DÉFECTUEUSES SERONT RETOURNÉES EN USINE : OUI/NON

2- NUMÉROS ET DESCRIPTION DES PIÈCES UTILISÉES POUR LA RÉPARATION :
-
-
-
3- ON RETROUVE CES PIÈCES DANS LES ÉQUIPEMENTS SUIVANTS :
-
-
