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Problem
Cause
Possible solution
Pump is
demanding
abnormal amount
of power
Incorrect direction of rotation
Reverse direction of rotation
Foreign object in the impeller
Clean impeller
The shafts are not in alignment with one
another
Align unit
The shaft is bent
Replace shaft
Rotating parts are rubbing against
stationary parts
Adjust everything and align if necessary
The wear plates/ring or impeller is/are
worn
Adjust or replace wear parts
The impeller is damaged
Repair or replace
The seal is not installed properly
Install properly; replace seal if necessary.
Inadequate lubrication or insufficient
lubricant in the bearing housing, possibly
as a result of a leak; can be identified by
higher than normal temperature
Follow good service plan
In this application the pump is not
functioning in the intended range
Make changes to the piping system, if
possible
Otherwise: use a different type of pump
The liquid has a higher s.g. or viscosity
than that for which the pump is intended
Change temperature of liquid, if possible.
Otherwise: use a different type of pump
WARNING
If appear some pump defect and cannot find fault immediately contact Uprent
technical department
.
Problem
Cause
Detection
Solution
Diesel engine
does not start
or stalls during
system
operation
No fuel
Check fuel level
Add fuel
Air in fuel
Deaerate engine by
starting
The engine is provided
with a self-deaerating fuel
system
No or not enough
battery voltage
Check battery voltage
Recharge battery or
replace battery
No or bad contact
between battery and
starter motor
Check connection between
battery and engine
Clean connection and
secure it
Fuel filter clogged
Check fuel filter
Replace fuel filter
Oil pressure low
Check oil level
Add oil
Oil temperature too
high
Check oil level
Add oil
Check whether all inlet openings of the casing are free
Provide sufficient free space around the set
Clear the inlet openings and screens from dirt
