Crane Weinman ULL - 7181, Инструкция по установке и эксплуатации

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6
Fig. ULL-VM
Mount assembled pump on base (53), reversing
disassembly instructions.
5. Install pump according to instruction on pages 3
and 4.
SERVICE GUIDE
TROUBLE AND CAUSE REMEDY
1. Failure to pump
a. Pump not properly primed
b. Suction lift too great
c. Speed too slow
d. Motor running in wrong direction
a. Be sure that pump case and suction line are full of water. See priming
instructions.
b. Locate the pump closer to the water source. Make sure that the suction
piping diameter is large enough.
c. Check the voltage at motor terminals and at the meter when the pump is
operating. Check for loose connections. If voltage is low, contact your
Power company. Be sure that wire size is adequate.
d. Check the wiring diagram on the motor nameplate. If it is a 3-Phase
motor, refer to the Wiring instructions.
2. Reduced Capacity and/or Head
a. Clogged impeller
b. Air pockets or leaks in suction line
c. Strainer too small or clogged
d. Insuf fi cient subergence of suction
pipe
e. Excessive suction lift
f. Excessively worn impeller
a. Remove and clean
b. Check the line for air leakes for excessive lift.
c. Check the end of the suction pipe or foot valve to see that it is not plugged
or buried in mud or sediment. When installing in pond or lake, support the
suction line so that it will be submerged in water, but nut imbedded in mud
or sediment. A strainer with greater screen area may be required.
d. Add suf
fi cient pipe to keep the submerged end well below
the water surface.
e. If caused by suction pipe friction, increase the size of the pipe; otherwise
move the pump closer to the water level.
f. Order replacement parts. See repair list.
3. Pump Losses Prime
a. Air leaks in suction line
b. Excessive suction lift and
operating too near shut-off point
c. Water level drops while pumping,
exposing suction pipe or strainer
a. Check suction piping. Piping might have frozen, causing it to split.
b. Move the pump closer to the water level.
c. Check the water supply. Add a length of pipe to the suction line to keep the
submerged end under water.
4. Motor Will Not Start
a. Blown fuses
b. No electric current at motor
c. Motor hums but will not start
d. Motor damaged by lightning or
voltage surge
a. Replace with new fuses.
b. The power supply may be off, the connections may be loose or incorrect,
or the wire may have been chewed by rodents.
c. Turn power off. Check the rotating element of the pump to see that it turns
freely.
d. Take the motor to any authorized motor repair shop