
con sult ing engineer de pend ing on
the con di tions of the application.
For installation of Hydromatic
supplied level con trols, refer
to your sys tem’s installation and
service manual.
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Before installing pump in sump,
lay it on side and rotate impeller.
Impeller may be slightly stuck
due to factory test water so it must
be broken loose with small bar or
screwdriver in edge of vanes. The
impeller should turn freely. Do
not connect the power until after
this test.
Clean all trash and sticks from
sump and connect pump to piping.
A check valve must be installed
on each pump. A gate or plug
valve in each pump discharge is
highly rec om mend ed. This valve
should be installed on the
discharge side of the check valve
so if necessary to service the
check valve, the line pressure can
be cut off. Sin gle pump systems
are sometimes installed without a
check valve where it is de sir able
to self-drain the dis charge line to
prevent freezing. This can be done
only with short discharge lines;
oth er wise water will return to the
sump and cause short cycling of
the pump.
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All electrical wiring must be in
ac cor dance with local code, and
only qual i fied electricians should
make the in stal la tions. Complete
wiring di a grams are included
for use in making the installation.
All wires should be checked
for shorts to ground with an
ohmmeter or Megger after the
con nec tions are made. This is
important, as one grounded wire
can cause con sid er able trouble.
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If a Hydromatic control panel
is used, terminal blocks are
provided for heat sensor, seal
failure connections (See Panel
Schematic). If a control panel
is supplied by others, it must
allow heat sensor and seal failure
ter mi na tions.
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1. Double check all wire
con nec tions.
2. Turn pumps to Off position
on H-O-A switch es.
3. Turn on breakers.
4A. When using single phase
pumps, make sure red
pump lead is con nect ed to
capacitor circuit, con nect
amprobe to pump power cord
and turn pump on. Pump
will show high amp draw
mo men tari ly, then as pump
comes off start wirings,
amps will drop to normal
nameplate amps.
4B. When using three phase
pumps (230/460/575), turn
H-O-A switch to Hand po si tion
on one pump and notice
op er a tion. If pump is noisy
and vi brates, rotation is
wrong. To change rotation,
interchange any two line
Pump
Operations
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If the Hydromatic electrical panel
is not used, start ers with 3 leg
overload relay must be
supplied on 3 phase pumps. Each
leg is to have an iden ti cal heater
sized in accordance with the
nameplate amps on the motor
hous ing. The amp draw on these
sub mers ible motors is slightly
higher than a cor re spond ing
horsepower sur face motor so
heat ers must be sized by the
nameplate rating.
Single phase pumps with
capacitor start have a run and a
start winding each drawing a
different current. To adequately
protect these windings with the
appropriate heaters, consult
the factory.
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In either simplex, duplex or
triplex systems the lower or
turn-off control is to be set to
maintain a minimum level in the
sump. This level shall be no more
than 31⁄4" from the top of the
motor housing down to the
surface of the sewage.
The second or turn-on control
is set above the lower turn-off
control. The exact distance
between the two floats must be a
compromise between a fre quent
pumping cycle (10 starts per hour
max.) to control septicity, solids
and a slower cycle for energy
econ o my. This distance should be
de ter mined by the engineer or
Installation
Instructions
3