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Installing Float Switch Controls:
The controls are supported by a
mounting bracket that is attached
to sump wall or cover or to the
NEMA 4 junction box.
Cord snubbers are used to hold the
cord in place. Control lever can be
changed at any time by loosening
the snubber and readjusting
cord length.
In either simplex or duplex system
the lower or turn-off control is set
just above the top of volute so
that the volute will always be
submerged during the pumping
cycle. The second or turn-on
control is set about 24 inches
above the lower turn-off control.
More distance between turn-on
and turn-off controls can be used,
but sewage may become septic
and excessive solids may collect
for the pump to handle. A frequent
pumping cycle is recommended
for best operation.
If an alarm system is used, this
control is usually set about 6 inches
above the override control. Some
engineers as described previously
prefer to have the alarm control
set below the override control.
WARRANTY IS VOID IF HEAT SENSORS ARE NOT
CONNECTED AS SHOWN (IN SERIES WITH CONTACTOR OIL)
TWO WIRE CONTROL OFFERING AUTOMATIC RESET
L1
ON-OFF
SWITCH
THREE WIRE CONTROL OFFERING AUTOMATIC RESET
L1
START
IN CERTAIN APPLICATIONS THE NEC MAY REQUIRE THREE OVERLOAD RELAYS
Making Electrical Connections:
All electrical wiring must be
in accordance with local code,
and only competent electricians
should make the installations. A
set of prints is included for use in
making the installation. All wires
should be checked for grounds
with an ohmmeter or Megger after
the connections are made. This
is important, as one grounded
wire can cause considerable
trouble.
IMPORTANT: If equipment is
not properly wired and protected
as recommended, the warranty
is void.
Heat Sensors and Seal Failure
Connections:
Be sure that heat sensor wires
are connected in series with the
starter coil. Connections are
provided on the terminal strip; see
wiring diagram.
If seal failure unit is used, connect
as shown with seal failure system.
If seal failure unit is not used,
the two seal failure wires are left
open. Do not connect power to
these lines at any time.
WARNING
THERMOSTATS
IN SERIES
COIL
BLACK
THERMOSTATS
OL
OL
IN SERIES
COIL
BLACK
Pump
Operation
Starting System:
1. Turn H-O-A switch to Off
2. Open all discharge valves
3. Turn H-O-A switch to Hand
4. Now set both H-O-A switches
5. Allow sump level to rise to
6. Turn both H-O-A switches
7. Turn both switches to Auto
L2
WHITE
8. Repeat this operation cycle
L2
WHITE
9. Check voltage when pumps
position then turn on main
circuit breakers.
and allow water to rise in
sump pump.
position on one pump and
notice operation. If pump is
noisy and vibrates, rotation
is wrong. To change rotation,
interchange any two line
leads to motor on 3ø.
Do not interchange main
incoming lines. If duplex
system, check second pump
in the same manner.
to Auto position and allow
water to rise in sump until
one pump starts. Allow pump
to operate until level drops to
turn-off point.
start other pump. Notice run
lights on panel; pumps should
alternate on each successive
cycle of operation.
to Auto position and allow
sump to fill to the override
control level.
position and both pumps
should start and operate
together until level drops to
turn-off point.
several times before leaving
the job.
are operating and check the
amp draw of each pump.
Check amps on each wire
5
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