3
OPERATION - PRIMING THE PUMP
a)
PRIMING:
These pumps are not self-priming. For best prim-
ing, fi ll the pump casing and the suction line full with water.
To prime the casing – Remove the priming plug and the drain
plug (See Figure 2). Pour clean water into the priming hole.
Replace the drain plug. Fill the pump casing full. Rotate the
motor shaft manually from the back of the motor to release
internal air pockets inside the casing. Refi ll, if necessary at
the priming hole. Replace the priming plug.
b)
STARTUP:
Dry operation may damage the water lubricated
seal inside the pump. If the pump does not deliver water
within seconds after startup, stop the motor and repeat the
priming operation. Several starting attempts may be neces-
sary to expel all of the air from the pump and suction lines.
c)
CONTINUOUS OPERATION:
Check the pump periodically
for loose or rubbing parts. Service the pump immediately if
any unusual noise, leaks or vibrations develop.
d)
DRAINING:
Should the pump be subject to freezing tem-
peratures, it will be necessary to completely drain the fl uid
from the pump and lines. To drain the pump casing, remove
the drain plug and the priming plug. Disconnect the suction
line at a connection close to the pump casing and allow the
water to drain from the suction line. Operate the pump for a
few seconds only to clear water from the impeller. Replace
the suction line carefully cleaning the threads and applying
fresh thread compound.
e)
ROTATION:
The arrow on the front of the pump casing in-
dicates the correct rotation of the impeller during operation.
Wire the motor as described above. If it is not turning in the
proper direction refer to the motor wiring instructions.
MAINTENANCE
WARNING - ELECTRICAL PRECAUTIONS
All wiring, electrical connections, and system grounding must
comply with the National Electrical Code (NEC) and with any local
codes and ordinances. Employ a licensed electrician.
WARNING - RISK OF ELECTRICAL SHOCK
Before servicing motor operated equipment, shut off the power at
the main electrical panel and disconnect the power supply from
the motor and the accessories. Use safe working practices during
servicing of equipment.
a)
LUBRICATION:
The pump itself does not need lubrication.
Refer to instructions provided with the motor for motor lubri-
cation and maintenance.
b)
REPLACEMENT OF SEAL:
If available, refer to the re-
pair parts list illustration showing the relative location and
names of all components to assist you while following these
instructions.
Disassembly:
1)
Disconnect piping and wiring.
2)
Remove the four nuts to dismount the pump casing from
the motor housing.
3)
Remove motor’s end cover (if required).
4)
Secure motor’s shaft end with screwdriver and remove
impeller by turning it counter-clockwise.
5)
Remove the spring seal from the shaft and slide the seal
plate off.
6)
Remove the ceramic seat and its rubber housing from the
seal plate.
Reassembly:
1)
Clean all parts thoroughly. Inspect for damage or wear.
2)
Liquid soap the rubber only of the stationary seal seat. Use
clean thumbs only to press seat into seal plate. Make sure
that seat is fully seated and wipe clean.
3)
Slide the seal plate onto the shaft being careful not to dam-
age the ceramic seat.
4)
Lightly soap the internal rubber ring of the rotary spring seal
assembly and slip in onto the motor shaft with the shiny side
of the ring towards the ceramic seat.
5)
Reassemble the impeller onto the shaft. Tighten “hand
tight” only.
6)
Place a new gasket onto the seal plate.
7)
Place the casing into position and attach the motor using
new spring washers and existing bolts. Use thread lock-
ing/sealing compound on casing to prevent leaks. Do not
over-tighten the bolts.
8)
Check that the impeller is not rubbing with the pump casing
by rotating the motor shaft by hand.
9)
Replace motor's end cover (if required).
10)
Reconnect piping and wiring.
11)
Reprime pump system.
PRECAUTIONS
a)
Whenever reassembly of pump is involved, check to see that
the impeller rotates freely within the casing.
b)
Never remove the water fl inger from the motor shaft unless
replacing a damaged fl inger. Be sure the motor has a fl inger
installed at all times.
TROUBLESHOOTING
a)
Pump fails to deliver water:
1) Pump is not properly primed.
2) Impeller does not rotate freely within the casing.
3) Suction lift is too great.
4) Foot valve is either not submerged, buried in mud, or is
blocked.
5) Suction line is completely choked.
b)
Pump delivers water but not at rated capacity:
1) Leaks in suction or discharge line.
2) Foot valve, suction line or impeller are partially plugged.
3) Suction lift is greater than recommended.
4) Improper impeller rotation.
c)
Pump loses prime:
1) Air leaks in suction line or foot valve.
2) Well drawdown too great.
3) Faulty foot valve.
d)
Motor will not start:
1) No power due to blown fuses, open switches or loose
connections.
WARNING: DO NOT RUN THE PUMP BEFORE PRIMING IT, SINCE THE SEAL AND IMPELLER COULD BE
PERMANENTLY DAMAGED.
