|
Cause & Remedy |
|
|
PROBLEM |
CAUSE |
REMEDY |
|
LOWERING
OF TEMPERATURE
DROP ACROSS COOLING
TOWER |
FILLS CONDITION IS POOR |
REPLACE / CLEAN FILLS |
|
FAN NOT IN OPERATION |
CHECK MOTOR, PUT FAN
IN
OPERATION IN
CORRECT DIRECTION |
|
DISTRIBUTION OF WATER THROUGH
NOZZLES ON
FILLS NOT CORRECT |
CLEAN THE NOZZLES |
|
CHANGE IN DESIGN PARAMETERS AS
WATER
FLOW RATE, AIR FLOW RATE |
CHECK PUMP FLOW RATE, PLANT
LOAD, CLEAN HEAT TRANSFER SURFACES WHEREVER POSSIBLE
ADJUST FAN BLADE ANGLE. |
|
|
WET BULB TEMPERATURE HIGHER |
CHECK DESIGN CONDITION, TRY TO
AVOID SATURATED
AIR RECIRCULATION. |
|
MOTOR
NOT WORKING |
IMPROPER POWER SUPPLY |
CONSULT SUPPLY TERMINALS. |
|
PHASE SUPPLY IMPROPER |
CHACK PHASE POWER, CONSULT POWER
SUPPLY TERMINAL |
|
STARTER NOT PERFORMING PROPERLY |
REPLACE STARTER,
CONNECT PHASE FAILURE SAFETY DEVICES. |
|
MOTOR WINDING DAMAGED |
SEND OUT FOR REPAIR WITH
SPECIFIC EXPLAINATION AS PER MOTOR QUALITY. |
|
BEARING JAMMED |
CLEAN / REPLACE BEARING |
|
FLUCTUATING
WATER
FLOW OBSERVED |
NOZZLES CLOGGED |
CLEAN NOZZLES |
|
PUMP PERFORMING AT HIGHER/ LOWER
DISCHRGE PRESSURE |
CHECK PUMP GRAPH, CHECK PUMP
POWER, REMOVE AIR TRAP, REPLACE PUMP |
|
SUMP WATER LEVEL LOW |
MAKEUP SUFFICIENT WATER IN BASIN |
|
VALVES, PUMP BAFFELS, FILTERS
CHOCKED |
PERFORM CLEANING ACTIVITY |
|
WATER
CARRY AWAY FROM
TOP OF TOWER |
WATER FLOW MORE THAN DESIGH
PARAMETER |
PUT THE CORRECT PUMP |
|
NOZZLES CLOGGED, NOT IN POSITION |
CLEAN NOZZLES, PUT IN CORRECT
DIRECTION |
|
FILLS CHOCKED |
CLEAN
/ REPLACE FILLS |
|
MOTOR RPM HIGHER |
PUT THE CORRECT MOTOR WITH
COMPARATIVELY
LOWER RPM |
|
|
AIR
FLOW NOT SUFFICIENT |
FILLS CLOGGED |
CLEAN / REPLACE FILLS |
|
FAN ANGLE OF ATTACK
IN NOT
CORRECT |
INCREASE
FAN ANGLE |
|
FAN SPEED NOT
CORRECT |
CHECK MOTOR POWER SUPPLY
VOLTAGE, BEARING CONDITION |
|
EXCESS
VIBERATION &
NOISE THROUGH FAN |
FAN NOT IN GOOD
CONDITION |
REPLACE / REPAIR FAN |
|
BALANCING NOT DONE |
DO STATIC & DYNAMIC
BALANCING OF FAN |
|
MOTOR NOT PERFORMING
IN GOOD
CONDITION |
CHECK MOTOR BEARING |
|
MOTOR MOUNTING FRAME NOT IN GOOD
CONDITION |
PUT A GOOD MOTOR SUPPORT FRAME. |
|
FAN TOUCHING CASING |
CREAT PROPER CLEARENCE BETWEEN
FAN TIP AND CASING. |
|
|
|
|
