5
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) Insuf
fi
cient application yield
3. PUMP GIVES REDUCED OUTPUT
a) Insuf
fi
cient application yield
b) Worn pump
c) Clogged intake screen
d) Low voltage
e) Incorrect rotation (3-phase only)
4. PUMP CYCLES TOO FREQUENTLY (if installed with
pressure switch)
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 (if installed with pressure switch)
a) Pressure switch too far from pressure tank
b) Improper air charge of tank - adjust to manufacturer’s
recommendations
TROUBLESHOOTING
Содержание Little Giant 558223
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