Hydromatic S4NX, Installation And Service Manual, Page: 3 / 16

3
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.
Note: red lead is always
start wind ing of pump using
single phase.
installing Pump in Sump:
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.
Making electrical Connections:
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.
iMPortANt: if equipment
is not properly wired and
protected as recommended,
Hydromatic war ran ty is void.
See Pages 5/6.
Heat Sensor and Seal Failure
Connections:
If a Hydromatic control panel
is used, terminal blocks are
provided for heat sensor and seal
failure connections (See Panel
Schematic). If a control panel is
supplied by others, it must allow
heat sensor and seal failure
termina tions.
Starting System:
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
wiring, 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 leads
to pump. Do not in ter change
main incoming lines. Check
rotation of all pumps in this
same manner.
5. Now set both H-O-A switches
to Auto po si tion and allow
water to rise in sump until one
pump starts. Allow pump to
operate until level drops to
turn-off point.
installing Sump Level Control
Float Controls:
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 3
1
⁄
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
con sult ing engineer de pend ing on
the con di tions of the application.
For installation of Hydromatic
sup plied level con trols refer to
your sys tem’s installation and
service manual.
Installation
Instructions
Pump
Operations