Liberty Pumps Provore PRG100-E Serie Manual Del Usuario página 9

6.
Troubleshooting
Symptom
 Tripped circuit breaker or
other interruption of power;
improper voltage.
 Problem with control panel
 Pump will not
turn on
 Defective float switch
 Motor thermal overload
device has tripped (single
phase device only)
 Discharge is blocked or
restricted
 Check valve is stuck closed or
installed incorrectly
 Pump runs
 Pump is air-locked
or hums but
does not
pump
 Pump impeller/cutter is
jammed
 Max. lift height (Head) has
been exceeded (see Fig. E)
 Water is
present  Pump seals have been
inside motor compromised
housing
 Defective float or build-up on
surroundings is restricting free
 Pump does
movement of the float.
not turn off
 Control panel failure
 Low Voltage
 Poor
grinding
performance
 Large Grinder Cutter Gap
 Impeller wear
 Low
pumping
performance
 Pump is rotating in reverse.
Cause
 Have an electrician verify that the pump is wired according
 Have an electrician verify that pump is connected to the
 Verify the pump runs manually, without floats. If the pump
 Disconnect the pump from its power source. Using a multi-
 Check the discharge line for blockage or for ice if the line
 If check valve is present, remove and inspect for freedom of
 Remove the pump and inspect the anti-airlock hole.
 With the pump de-energized, inspect bottom of pump for
 Attempt to re-route piping to a lower elevation. If this is not
 Consult Liberty Pumps.
 Check that the float is free to move. If build-up restricts
 Have an electrician inspect/evaluate control panel. Consult
 Have electrician check wiring for proper capacity and
 Consult Liberty Pumps for further troubleshooting and
 Consult Liberty Pumps for additional troubleshooting and
 Contact Liberty Pumps immediately. Do not switch power
©Copyright 2014 Liberty Pumps Inc. All rights reserved
Correction
to the installation instructions. Also check all wiring for
proper connections and adequate capacity.
control panel correctly. If no problem is found, consult
Liberty Pumps or control panel manufacturer.
works, check that all floats are free to move. If a float has
debris build-up or is restricted by its surroundings, clean
and reinstall float properly. Otherwise consult Liberty
Pumps.
meter, verify that there is no continuity between the hot and
neutral motor leads. Once the pump cools, there will be
continuity, and the pump is safe to run. Otherwise consult
Liberty Pumps.
passes through or into cold areas.
operation and proper installation.
Remove any debris or rust that may be blocking the hole.
Verify that the pump turn off level has not changed from its
factory specified setting.
foreign material blocking the impeller or cutter. If no
blockage is found, try rotating the cutter using a hex key
and the cutter bolt. If the cutter will not rotate, consult
Liberty Pumps for further instruction.
possible, a larger pump may need to be installed.
float, clean and reinstall. Otherwise, consult Liberty Pumps.
control panel manufacturer for further assistance.
measure voltage while pump is in operation.
assistance.
replacement parts.
leads or continue to operate the pump.
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