Franklin Electric VS 4 Serie Manuel Du Propriétaire page 6

DISCHARGE PLUMBING
Fig. 1 illustrates a typical well installation showing above
ground components. Adhere to the following items when
installing the discharge plumbing.
1. Install an above ground check valve upstream from
the pressure switch.
2. Always install a pressure relief valve in the system.
The relief valve should be capable of discharging the
fl ow rate of the pump at the rated working pressure of
the pressure tank. Locate the relief valve close to the
pressure tank.
3. Install a pressure switch between the check valve and
the pressure tank. Refer to Fig. 2, 3, or 4 for proper
wiring connections of pressure switch.
4. Install a pressure tank as close as possible to
the pressure switch. Refer to manufacturer's
recommendations for installation.
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 you install it in a lake, pond, stream, or fountain
since there is no way to stop people and livestock
from entering or touching the surrounding water.
Consequently we recommend that such an installation
be done by a licensed electrician in conformance with all
applicable national and local electrical codes. Grounding
after the manner already described is a minimum
requirement, and a ground fault circuit interrupter 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,
o
at a 15 slant to assure proper motor bearing lubrication.
Shield the pump from direct physical contact. 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.
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TROUBLESHOOTING
1. PUMP FAILS TO START
a) Electrical trouble - call dealer or electrician.
b) Drawdown protection device has pump turned off.
c) Overload tripped.
d) Reset low pressure cutoff switch (if installed).
2. PUMP FAILS TO DELIVER WATER
a) Air lock in pump.
b) Clogged intake screen.
c) Insuffi cient well yield.
3. PUMP GIVES REDUCED OUTPUT
a) Insuffi cient well yield.
b) Worn pump.
c) Clogged intake screen.
d) Low voltage.
e) Incorrect rotation (3-phase only).
4. PUMP CYCLES TOO FREQUENTLY
a) Excessive pressure drop between pressure switch
and pressure tank.
b) "Cut-in" pressure at pressure tank too high.
c) "Cut-out" pressure at pressure tank too low.
d) Waterlogged pressure tank.
e) Start and stop electrodes of fl oatless liquid level
control set too close together.
f) Tank sized too small to meet system requirements.
5. OVERLOADS TRIP
a) Electrical trouble - call dealer or electrician.
6. PRESSURE SWITCH CYCLES RAPIDLY WHEN
PUMP STARTS
a) Pressure switch too far from pressure tank.
b) Adjust air charge of tank to manufacturer's
recommendations.