DRESSER Wayne 700 Series, Руководство по установке и эксплуатации

Страница: 22 / 26

18
Part No. 891817 Rev A February 2007
SYMPTOM DIAGNOSIS & CORRECTIVE ACTION
Motor stalls when
nozzle is closed.
•
Bypass valve is stuck in closed position.
o
Unscrew the bypass valve cover. Remove the bypass valve and
clean or replace as necessary.
•
Low voltage.
o
Test for adequate voltage in the motor junction box (within 10% of
nameplate voltage).
Slow flow rate.
•
Clogged filter.
o
If an optional filter is used, install a new filter element.
•
Dirty strainer.
o
Un-bolt the strainer cover plate. Remove and clean the strainer.
•
Air leak in system.
o
Check for air leak at suction connection and check that all cover
plates are flat and securely fastened.
•
Low voltage.
o
Test for adequate voltage in the motor junction box (within 10% of
nameplate voltage).
•
Hose accessories are obstructed or too restrictive.
o
Remove the suspected accessory and test the flow.
o
When using an automatic nozzle, a farm-type automatic nozzle will
provide the best flow.
•
Supply line is blocked.
o
Remove pump and check suction line for damage or obstructions.
•
Rotor or vanes are worn.
o
Remove rotor/vanes cover plate. Remove the rotor and vanes and
check for excessive wear. Replace parts as necessary.
•
Bypass valve is stuck in open position.
o
Unscrew the bypass valve cover. Remove the bypass valve and
clean or replace as necessary.
Motor overheats.
•
Low voltage.
o
Test for adequate voltage in the motor junction box (within 10% of
nameplate voltage).
•
Clogged filter.
o
If an optional filter is used, install a new filter element.
•
Viscosity of fluid is too high.
o
Verify fluid is a low viscosity petroleum fuel such as gasoline,
kerosene, or diesel.
•
Supply line is blocked.
o
Remove pump and check suction line for damage or obstructions.