Page 16
WATERAX
BB-4 Owner's Manual
16
04/2015
Pump Does Not Meet Performance
Incompatible
Installation
Piping size and configuration may be too restrictive. Contact a
WATERAX
Inc.
representative if assistance is needed in evaluating the unit’s piping.
Gauge or
Instrument
Failure
Check that all gauges are calibrated and that all equipment is in proper
condition. Nozzles with dented edges and bent or damaged pitot tubes will
produce faulty readings.
Blockage
Check all hoses, tank, piping, etc. Remove any obstructions found.
Check for debris wedged or caught in the impeller or diffusers. Remove any
obstructions found.
Insufficient
Power to the
Pump
Check engine compression and complete engine repairs if required.
An engine tune up may be needed to bring engine back to peak performance.
An engine will lose approximate 3.5% of its power per every 1000 feet above
sea level. If the elevation of operation was not considered when the unit was
selected, a unit of higher horsepower may be required to make the needed
performance.
Restriction
If a new strainer and/or intake hose was purchased, check that they provide
adequate supply to the pump to meet the performance desired.
If the pump was purchased used, check that the actual configuration will
achieve the desired performance. A
WATERAX
Inc. representative can be
contacted for assistance.
Check pump lift. Refer to “Pump Loses Prime or Will Not Prime: Suction Lift
Too High” s
ection.
Pump Cavitating
Lift Too High
Move pump closer to water source.
Decrease pump’s intake hose length.
Increase pump’s intake hose size (inner diameter).
Water
Temperature
Water temperature may be too high. Water temperatures approaching 35°C
(95°F) or higher are likely to cavitate the pump. Decrease engine speed and/or
gate the discharge valve to decrease pump flow until the cavitating stops.
Locate a cooler water source.
Restrictions
Refer to “Restrictions” in the “Pump Does Not Make Performance” section.
Check that the bottom of the suction hose is at a minimum of 2 feet (0.6
meters) from the bottom of the water source and correct if necessary.
Check that the bottom of the suction hose/strainer is 4 to 6 times the hose
diameter below the water supply surface level and correct if necessary.
Engine Speed Too High for Required Capacity and Pressure
Air Leaks
Refer to “Pump Loses or Will Not Prime: Air Leak”
section.
