4
2. Check for heat sensor
trip in pump with a jumper
between HEAT SEN SOR
1 and HEAT SEN SOR 2
terminals.
3. Reset overload(s) if tripped.
4. Reset circuit breakers if
tripped.
3. Pump runs, but run light
does not energize.
a. Re move light and check
with ohmmeter.
b. Check run light wir ing.
4. Pump runs but does not
pump down the wet well.
a. On three phase only, pump
rotation may be wrong.
Wiring of pump to con-
trol pan el may be re verse
sequenced.
b. Impeller may be dragging
in volute due to sol ids.
High am per age draw would
identify this.
c. Refer to the pump manual
for other possibilities such
as closed discharge gate
valve, etc.
5. Severe humming/chat ter ing
of contactors and control
relays.
a. There may be low voltage.
Check voltage at primary
and secondary of control
transformer us
ing a
volt me ter. This low voltage
condition may cause severe
chat ter ing and burnout of
contactors and relays.
b. Contactor may have dust
around magnet of coil
struc
ture. Dry or clean
as re quired.
c. Check voltage to the
control panel. Contactors
require a minimum of
1. Pump does not run in
Hand position.
a. Check pump circuit breaker
and control fuse for trip ping
or blown condition.
b. Check incoming power
volt age and control cir cuit
volt age.
c. Check overload re lay to see
if it is tripped. Reset relay
if tripped.
d. With the power off, check
motor heat sensor continuity.
e. Check wiring of pump to
con
trol panel. It should
agree with the sche mat ic.
f. Check
contactor
coil
re sis tance.
2. Pump does not run in
Auto position.
a. Check items (a.) through
(f.) per Item #1 above.
b. Floats may be miswired to
control panel. Check float
type (N.O. or N.C.) and
hook up by re fer ring to the
schematic. If the start and
stop floats are hooked in
reverse, pump will short
cycle and will not pump the
level down.
c. Check pump controller
in di cat ing lights.
1. Make sure there is power
to the controller.
2. Is water level in the
sys tem high enough to
ac ti vate the floats?
3. If #1 and #2 check out,
shut power off to the
pan el. Remove the OFF
FLOAT wires and run a
jump er between the OFF
FLOAT connections.
If OFF FLOAT light
comes on, the float is
“hung up” or the wiring
connections are loose.
1. Is water level in the
system high enough
to activate the lead
(ON) float?
2. If #1 checks out, shut
off pow er to the panel.
Remove the lead (ON)
float wires and run a
jum per between the LEAD
FLOAT (ON FLOAT)
connec tions. If one or two
pumps start, check the lead
(ON) float for “hang up” or
loose wir ing con nec tions.
1. Check Hand-Off-Auto
(H-O-A) switch for correct
position.
OFF
FLT
PUMP 1
CALL
LEAD
FLT
PUMP 2
CALL
DUPLEX
No Lights On
(No call from the floats)
PUMP 1
CALL
PUMP 2
CALL
OFF
FLT
LEAD
FLT
PUMP 1
CALL
OFF
FLT
PUMP 2
CALL
LEAD
FLT
DUPLEX ONLY
OR
“FLOAT” light ON, “LEAD FLOAT” light
ON, and either “PUMP 1” or “PUMP 2”
light ON tells you the lead float is calling
for pump.
All lights ON on pump controller tells
you all float circuits are good and the
problem lies elsewhere.
PUMP 1
CALL
OFF
FLT
PUMP 2
CALL
LEAD
FLT
DUPLEX
Off Float Light On
