Troubleshooting - MYERS MCSP3I Manual Del Usuario

Operation
OPERATION
Do not touch sump pump, pump
motor, water, or discharge piping
when pump is connected to electrical power. Always
disconnect pump cord (power) before handling.
1. Plug this unit into a 115V outlet, on an individ-
ual branch circuit, with a Class A, 15 amp
GFCI (Ground Fault Circuit Interrupter).
Consult your local electrician for information
and availability.
2. Fill sump pit with water, pump will start auto-
matically when lower rod stop actuates switch
lever arm. When upper rod stop actuates

Troubleshooting

Unplug pump from power receptacle before working on pump.
SYMPTOM
Motor will not
startor run
Motor runs but
pump will not
pump
Pump starts and
stops too often
Pump is noisy
Pump will not
stop running
POSSIBLE CAUSE(S)
No electrical power
Low line voltage
Faulty automatic switch
Float or float rod stuck
Waterlogged float
Motor overload tripped
Electrical malfunction
Inlet clogged
Discharge line plugged
Low line voltage
Pump airlocked
Broken impeller or shaft
Improper positioning of
float rod stop
Faulty automatic switch
Improper installation
Noisy motor
Debris around float or
float rod stuck
Faulty automatic switch
Motor defective
switch lever arm, pump will stop.
NOTICE: Do not allow pump to run dry.
from unit.
3. The motor is equipped with an automatic reset
thermal protector to protect unit from overheat-
ing. When motor has cooled sufficiently, switch
will reset automatically and restart motor.
Repeated tripping could be caused by low volt-
age, long extension cords, clogged impeller,
very low head or lift, etc. Cycling of protector
will cause eventual motor burnout.
CORRECTIVE ACTION
Check fuse, circuit breaker, power cord and
electrical outlet.
If voltage wiring under recommended minimum,
check size of wiring from main source. If OK,
contact Electric Company or local Hydro authority.
Operate switch manually and replace if inoperative.
Check to see float is not rubbing sump wall or float
rod rubbing or stuck against sump cover.
Replace float if filled with water.
If pump has been running and stops before sump
is emptied, automatic overload may have tripped.
Check inlet screen to be sure impeller is not
jammed. If so, free impeller of obstruction.
Check power cord, automatic switch and motor.
Replace faulty parts as needed.
Check inlet and clean if needed.
Clear discharge line and check valve for
obstruction.
Refer to Corrective Action on low line voltage in
above section.
Drill a 1/8" (3.2mm) hole in discharge pipe just
above pump body but below the check valve.
Replace impeller or shaft as needed.
Lower float rod stop.
Replace automatic switch.
Refer to No. 5 in Installation Instructions.
Replace pump.
Remove debris from sump. Check to see float is
not rubbing sump wall or float rod rubbing or stuck
against sump cover.
Replace switch.
Replace pump.
Before attempting to service,
always disconnect power
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