Xylem IMVIC R01 Model VIC Vertical Industrial Turbine Can Pumps - Manual (Page 25)

25
TROUBLESHOOTING
TROUBLE PROBABLE CAUSE REMEDY
1. Pump does not start A. Electrical circuit open or not Check circuit and correct.
completed
B. Improper lateral adjustment. Reset impeller adjustment,
Impeller on bottom. See pages 17 or 18.
C. Low voltage supplied to Check whether driver wiring is
electric driver correct and receiving full voltage.
D. Defective motor Consult factory.
2. No liquid delivered A. Discharge valve closed Be sure the discharge valve is in
full open position.
B. Speed is too low Check if driver is directly across
the line and receiving full voltage.
C. Damaged bowl assembly; Pull pump and repair all
Broken or disconnected shaft damaged components.
D. Driver with reduced voltage, or Check RPM, voltage, and amps.
Reduced current starting does
not come up to speed
E. Barrel/Discharge head not Open vent.
properly vented.
F. Suction valve closed. Confirm valve position.
3. Not enough liquid A. Same as items 2-A thru 2-E Same as items 2-A thru 2-E.
B. Cavitation Insufficient NPSH available.
Consider lowering the bowl
assembly by adding column.
C. Impellers adjusted too high See pages 17 or 18.
D. Air or gas in the water If successive starts and stops
do not remedy, lower pump if
possible, or close discharge
valve to maintain well pumping
level at a lower GPM.
E. Excessive pump wear Pull pump and repair as required.
F. Suction valve partially open Confirm valve position.
4. Not enough pressure See (3.) Not enough liquid. See (3.) Not enough liquid.
5. Pump works for a while A. Excessive horsepower required. Use larger driver. Consult factory.
and quits
B. Pumping higher viscosity or Test liquid for viscosity and
specific gravity liquid than specific gravity.
designed for.
C. Mechanical failure of Check bearings and impellers for
critical parts damage. Any irregularities in
these parts will cause a drag
on the shaft.
D. Suction strainer clogged Pull pump and clean the strainer.
E. Misalignment Realign pump and driver.
F. Same as 2E, 2F and 3F Same as 2E, 2F and 3F