Gorman-Rupp Pumps SE1 1/2A3 115V 1P 1483930 and up - Manual (Page 21)

OM−06488 SE SERIES
TROUBLESHOOTING PAGE D − 1
TROUBLESHOOTING − SECTION D
Review all SAFETY information in Section A.
The following precautions should be
taken before attempting to service the
pump; otherwise, injury or death could
result.
1. Familiarize yourself with this man-
ual and with all other literature
shipped with the pump.
2. Shutdown and lock out incoming
power to the control box to ensure
that the pump will remain inopera-
tive.
3. Allow the pump to completely cool
if overheated.
4. Check the temperature before
opening any covers, plates or
plugs.
5. Close the discharge valve (if
used).
The electrical power used to operate
this pump is high enough to cause inju-
ry or death. Obtain the services of a qu-
alified electrician to troubleshoot, test
and/or service the electrical compo-
nents of this pump.
NOTE
Many of the probable remedies listed below re-
quire use of electrical test instruments; for specific
procedures, see ELECTRICAL TESTING following
the chart.
Table 1. Trouble Shooting Chart
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP FAILS TO START,
OVERLOAD UNIT NOT
TRIPPED
(MANUAL MODE)
(AUTOMATIC MODE)
Power source incompatible with
pump motor.
No voltage at line side of power cable
connection.
Open circuit in motor windings or
power cable.
Defective motor.
Liquid level device or control circuits
improperly connected to main con-
trol box.
Level sensing device(s) improperly
positioned.
Level sensing device(s) fouled with
mud or foreign material.
Float type sensing device(s) tangled
or obstructed.
Correct power source.
Check power source for blown fuse,
open breaker, broken lead, or loose
connection.
Check continuity.
Check for and replace defective unit.
Check wiring diagrams; correct or
tighten connections.
Position device(s) at proper level.
Clean sensing device(s).
Check installation for free movement
of float.