4
General
Information
overload protec tion for each
pump, an H-O-A switch and run
light for each pump, an elec tric
alternator and a trans former to
provide 115 volts for con trol
circuit and alarms.
Overload Heaters:
If the Hydromatic electrical panel
is not used, starters with
3 leg overload protection must
be supplied. On 3 phase pumps
the heaters must be sized in
ac cor dance with the nameplate
amps on the motor housing. The
amp draw on these submersible
motors is slightly higher than
a
corresponding
horsepower
surface motor so heaters must
be sized by the nameplate rating.
IMPORTANT: If other than
Hydromatic starters are used,
be sure the heat sensor wires are
connected in series with the
starter coil circuit. Typical
wiring diagrams are in clud ed.
Hydr-O-Rail:
If the pump or pumps are to
be used with Hydr-O-Rail system,
the pumps will be equipped with
guide brackets and hydraulic
sealing flange.
small bar or screwdriver in edge
of vanes. The impeller should
turn freely.
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
line is also 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.
NEMA 4 Junction Box
(Optional):
If electrical control panel is to be
set remote from the pump sump, a
NEMA 4 junction box should be
used to make power and control
connections. The Hydromatic
NEMA 4 junction box is provided
with compression con nec tors for
sealing all wires. No sealing
compound is needed to make
con nec tions waterproof.
Wiring diagrams are provided
with panel for making connections.
An extra set of diagrams is
included so that one set can be
used in the sump when making
connections. The size wire to use
from panel to sump depends on
motor size and distance in feet.
The table on page 3 can be used as
a guide for wire size.
Be sure each wire is checked out
so that wrong connection will
not be made. An ohmmeter or
Megger can be used to check wire
continuity.
CONNECTION DIAGRAM FOR LEADS IN
MOTOR AND CONNECTION BOX
230 VOLTS
460 VOLTS
GREEN
GREEN
L3
L2
L1
L3
L2
L1
3
2
1
9
8
7
6
5
4
3
2
1
9
8
7
6
5
4
HEAT SENSORS AND SEAL FAILURE CONNECTIONS
FOR ANY VOLTAGE MOTOR
ELECTRODE
HEAT SENSORS
IN MOTOR
WINDINGS
WHITE
BLACK
HEAT SENSORS
SEAL FAILURE
RED
DARK
GREEN
Fig. 1
Fig. 2
Installing Pump in Sump:
Before installing pump in sump
lay it on side and turn impeller
manually. Impeller may be slightly
stuck due to factory test water so
it must be broken loose with
Pump
Installation
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