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in the Off position. Now
connect power to the terminal
block or the circuit breaker as
directed by the schematic.
e. Control panel must be
grounded properly per
NEC and/or local codes.
To facilitate this, a ground
lug is provided on the
control panel.
Start-Up Operation
1. Check junction box for
moisture. Moisture may
cause chattering of relays/
contactors.
2. If pump is single-phase with
start capacitor, start relay and
run capacitor in panel. Check
that pump White, Black
and Red power wires are
connected to panel correctly.
3. Check incoming power
voltage to make sure that
it is correct for panel and
pump model.
4. Turn on power to panel.
5. Check overload relay and
verify reset mode (if overload
is supplied).
6. Check voltage to the
panel and at secondary of
control transformer using a
voltmeter. If no transformer
is supplied, check voltage at
the circuit breakers.
7. With H-O-A switch in hand,
check discharge to verify the
pump is running. Check for
flow. On three-phase power,
check to see if each pump
has proper rotation. Wrong
rotation will give low flow.
8. Check full load current with
amp probe and compare it
with the nameplate rating.
On three-phase pumps, check
all three phases. On single-
phase pumps, check black
pump lead.
9. Check operation of start
relay, if supplied on single-
phase panels.
10. With H-O-A switch in Auto,
check float operation and
response to control panel
to the float operation. For
sequence of operation, refer
to design specification.
11. Make sure H-O-A switch is
left in the Auto position after
start-up is completed.
Pump Start-Up:
Refer to pump Installation and
Service Manual.
Pump Maintenance
The maintenance schedule
will vary with operating and
environmental conditions. It will
also vary with the specific type
of control supplied.
1. Exercise breaker through one
cycle. Be careful not to over-
exercise as the breaker is not
a switching device. Excessive
operations tend to affect the
trip curve of the breaker.
2. Check contactors and relays
for excessive humming.
This can be accomplished
by turning pumps on and off
in the Hand mode with the
H-O-A switch.
3. Check pump run light(s) by
running pump(s) in Hand
mode. Check bulb(s) in any
other light(s).
4. With the power off, check
continuity of all control fuses.
5. Check voltage at primary
and secondary of
control transformer.
6. Check the pump full-
load amps.
7. For single-phase panels with
start circuit, about 5 seconds
after the pump starts check
the voltage from terminal 1 to
terminal 2 on the start relay
to be sure that the relay has
operated. The voltage from
terminal 1 to terminal 2 on
the start relay must exceed
10 VAC. For some pumps
the voltage may exceed 400
VAC. If after 5 seconds the
voltage from terminal 1 to
terminal 2 on the start relay
does not exceed 10 VAC stop
the pump as damage to the
start capacitor may occur in
about 15 seconds.
If the start relay is not
operating check the pump
and the system voltage to
be sure that they match.
Check the power wiring
to ensure that the pump is
connected properly. Start the
pump once more and check
that the voltage from the
terminal for the black wire
to the white wire is within
system tolerance.
8. Check junction boxes for
moisture. Moisture may
cause chattering of relays
and contactors.
9. Check for moisture inside
control panel enclosure.
Moisture can cause damage
to electrical components.
Check door gasket for
proper seal.
10. Check labels to verify they
have not been damaged.
11. Lubricate enclosure hinges.
12. Pull floats and check for
proper operation and ensure
there is no foreign buildup
on them.
Spare Parts List:
The following is a list of
recommended spare parts.
However, conditions of service
vary significantly and a general
list may not in its entirety be
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