Dixon EXD 100, Instruction & Operation Manual

Page: 23 / 32

PUMP
23 Instruction & Operation Manual 800.789.1718
Problem Possible Cause Suggested Action
Pump Not Delivering Enough
Capacity
System head is higher than
design head
Reconfigure the system as to decrease the system head.
Pump is running in the wrong
direction
Reverse any two leads on the motor electrical connection.
Speed too slow Ensure motor connections are correct and if using a VFD check
the frequency limit.
Excessive air in fluid Make necessary adjustments in the system to ensure air is
removed before material reaches the pump.
Wrong impeller diameter was
selected
Contact Dixon Sanitary.
Product is more viscous than
initially thought
Contact Dixon Sanitary.
Pump Delivering Too Much
Capacity
System head is lower than the
design head
Decrease the line size or use throttling valve on the pump
discharge to increase the system head.
Wrong impeller diameter was
selected
Contact Dixon Sanitary.
Impeller Rubbing On Casing/
Front Cover
Shaft sleeve was not set
properly
Check shaft sleeve and reset to proper position as given in
the assembly section of this manual. Be sure to follow the
recommend bolt torque values for the sleeve.
Impeller Damaged Foreign material in pump Replace impeller.
Cavitation Evaluate system to ensure adequate NPSHa based on the
pumps performance curve.
Motor Overload/Excessive
Power Consumption
Discharge is too high Contact Dixon Sanitary.
Impeller is binding Inspect pump and check for any damage, misalignment or
interference. Replace any damaged or worn parts.
Seal is binding Inspect pump and replace any damaged or worn parts.
System head is too low Decrease the line size or use throttling valve on the pump
discharge to increase the system head.
Liquid has higher specific
gravity or is more viscous than
initially thought
Contact Dixon Sanitary.
Electrical supply, voltage or
frequency incorrect
Check electrical connections and replace motor if necessary.
Defective motor Contact motor manufacturer for possible warranty or repair.
Replace if needed.
Any Other Issues Contact Dixon Sanitary.
Troubleshooting