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amp draw on these submersible
motors is slightly higher than a
corresponding horsepower surface
motor so heaters must be sized by
the nameplate rating.
Single
phase
pumps
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 winding of pump using
single phase.
Pump
Installation
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
1
than 3
⁄
" from the top of the
4
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
between the two floats must be a
compromise between a frequent
pumping cycle (10 starts per hour
max.) to control septicity, solids
and a slower cycle for energy
economy. This distance should be
determined by the engineer or
consulting engineer depending on
the conditions of the application.
For installation of Hydromatic
supplied level controls refer to
your systems installation and
service manual.
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
with
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 recommended. 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. Single pump systems
are sometimes installed without a
check valve where it is desirable
to self-drain the discharge line to
prevent freezing. This can be done
only with short discharge lines;
otherwise water will return to the
sump and cause short cycling of
the pump.
Making electrical Connections:
All electrical wiring must be in
accordance with local code, and
only qualified electricians should
distance
make the installations. Complete
wiring diagrams are included for
use in making the installation.
All wires should be checked
for shorts to ground 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,
Hydromatic warranty 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, seal
failure connections (See Panel
Schematic). If a control panel
is supplied by others, it must
allow heat sensor and seal
failure terminations.
Pump
Operations
Starting System:
1. Double
check
connections.
2. Turn pumps to Off position on
H-O-A switches.
3. Turn on breakers.
4A.When using single phase
pumps make sure red pump
lead is connected to capacitor
circuit, connect amprobe to
pump power cord and turn
pump on. Pump will show high
amp draw momentarily, 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
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 pump. Do not interchange
main incoming lines. Check
rotation of all pumps in this
same manner.
5. Now set both H-O-A switches
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.
all
wire
to
Hand
3
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