Troubleshooting - Redlion 6RLPG-2U Manual Del Usario

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Troubleshooting

Troubleshooting
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Problem
Pump will not pump
Pump will not prime
Priming takes a long time
Pump does not perform as
well as it should
Pump loses prime
10
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Probable Causes
Air leak in suction hose
The suction and/or discharge hose(s)
may be blocked, or the valve(s) are
closed, faulty and/or blocked
The end of the suction hose is not
submerged
Total head is too high for this pump
to work against
Excessive suction lift.
Suction hose is quite long
Air pockets of leaks in suction hose
Flow restricted due to debris build-up Clean the hoses and fittings
Flow restriction due to faulty or semi-
open valve(s)
Flow restriction due to pipe or hose
smaller than thread sizes on the
pump
Insufficient submergence of the end
of suction hose
Excessively worn impeller
Seal is damaged and liquid is leaking
through the middle of the adapter.
Air pockets or leaks in the suction
hose
Clogged impeller
Engine throttle is in SLOW position
Water level drops below the end of
the suction hose
Corrective Action
Make sure suction hose is double clamped at joints, clamps are
tight, and fittings have thread compound and are tight with no
nicks or cuts in hose.
Make sure hoses and valves are in good working order.
The end of the suction hose must be submerged.
Reduce total head or use a higher head pump.
Move the pump closer to liquid source. Take into consideration
size and length of piping, pipe fitting, and elevation above sea
level. It is recommended that total suction head does not exceed
25 ft.
Refer to "Physical Installation" on page
Check the hose for loose connections.
Make sure valves are in good working order.
Increase the size of hose or pipe to reduce friction losses
The end of suction hose must be submerged
An excessively worn impeller is mainly caused from cavitation
from restricted suction or excessive suction lift. Replace impeller
and check suction.
Seal damage could be due to normal wear, overheating, or
pumping chemicals or abrasives for which the seal is not
designed. Replace the seal and check for overheating. Refer to
"Product Description" on page 4
tions.
Check the hose for loose connections.
Remove casing and clean impeller.
Adjust throttle position.
Submerge end of suction hose.
5.
for appropriate liquid applica-