Never run the pump unless it is completely
submerged in water. If run without water, the pump and
motor could be damaged. Note also that air drawn into the
pump can cause an airlock under certain conditions.
Incoming 1-phase power
1-phase submersible motor
Submersible cable
Switch or timer
Circuit breaker or
fuse disconnect switch
FIGURE 2
2-wire, 1-phase, 1/2 through 1-1/2 HP
Pump Wiring Diagram
C A U T I O N
provide protection against only induced voltage surges on
secondary power lines; they are not effective against direct
hits.
6. Mount the control box in an area protected from rain, snow,
direct sunlight, or other high temperatures as this may cause
tripping of the overload protector. Also protect the control
box from extreme cold (below 25
o
F/-32
o
C) as this may have
adverse effects on the starting capacitor.
7. A two-wire pump does not require a motor control box; all
electrical components are built inside the motor. Figure 2
shows a typical wiring diagram for a two-wire installation.
8. Use an ohm meter to make continuity and insulation checks
after the installation is completed.
9. Place the additional pump nameplate onto the submersible
label and place both onto disconnect switch or circuit
breaker box for future reference.
4
INSTALLATION IN LAKE OR STREAM
A submersible pump is usually isolated at the bottom of a well,
where electrical leakage from its motor and cable presents no
hazard to life. This natural protection is lost when it is installed
it in a lake, pond, stream, or fountain because there is no way
to stop people and animals from entering or touching the
surrounding water. It is recommended that such an installation
be done by a licensed electrician in conformance with all
applicable national and local electrical codes. Grounding as
described in this manual is a minimum requirement, and a
ground fault circuit interrupter (GFCI) is advisable. But in the
absence of explicit national or local regulations, ask the local
electric utility for guidance. In any case, support the pump
from the shore or bottom at a 15
o
slant to assure proper motor
bearing lubrication. Shield the pump from direct physical
contact by people and animals. Protect and screen the pump
intake to prevent blockage by leaves and weeds, but remember
the need for adequate
fl
ow over the motor for cooling purposes.
In addition, protect the entire underwater installation from water
currents, ice, boats, anchors, debris, vandalism, and other
hazards.
Содержание Little Giant 558223
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