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sparkable electrical devices or
flames in a septic (gaseous) or
possible septic basin.
Pump
Maintenance
To remove a pump from a
standard
installation
panel mounted on basin cover),
the power to the control panel is
first turned off. Close the plug
valve. Lift out the pump from
the basin by means of the chain
or cable. Disconnect the flexible
conduit, power and sensor cords
from the control panel terminals.
Pull the pump cord down through
the pipe coupling while holding
the cord on the underside of the
basin cover so the cords do not
fall into the basin. For reinstalling
the pump, reverse the above
procedure.
Removing Float Controls for
Replacement:
To remove a float for replacement
from a standard installation
(control
panel
mounted
basin cover), the power is first
turned off to the control panel.
Disconnect the float leads from
the terminals in the control panel.
Disconnect the flexible conduit
from the control panel. Remove
the flexible conduit and the float
control leads from the control
panel. Pull the cord through the
pipe coupling while holding
the cords on the underside of
the basin cover so the cords do
not fall into the basin. Remove
flexible conduit from potting
head. Break out potting from the
potting head and remove the float
wire. Remove float cord from
float cord mounting bracket ad
remove float from basin. Replace
3900 float by reversing removal
6
procedure. Repot the leads in the
potting head according to N.E.C
and/or local codes.
For the removal of the pumps and
float controls from systems with
the control panel mounted remote
from basin cover, see the Pump
Installation and Service Manual.
WARNING: Before handling
(control
these pumps and controls,
always disconnect the power
first. Do not smoke or use
sparkable electrical devices or
flames in a septic (gaseous) or
possible septic basin.
Pump
Troubleshooting
The following is a list of common
problems and possible solutions.
Refer to Pump Installation and
Service Manual for any necessary
adjusting, dismantling or repair
work required on the pump.
For Control Panel troubleshooting
on
chart, refer to Control Panel
Installation and Service Manual.
Pump runs but does not pump
down the basin with the selector
switch on either Hand or
Automatic position.
1. Impeller may be clogged.
Amperage
nameplate will indicate this.
2. Pump rotation may be wrong.
Reversing any two line leads
on three phase pumps will
reverse the rotation.
3. Discharge plug valve may be
closed.
4. Plugging
impeller to sealing flange. This
is evident if no water runs out
of sealing flange after raising
5. Plugging beyond the sealing
6. Discharge head may be too
7. Improper
8. Check for possible broken or
higher
than
anywhere
from
the pump. Pull the pump from
the basin to find the clog.
flange. This is evident if water
does run out when pump is
operating when disconnecting
the sealing flange from the
discharge elbow. Remove
the check valve, clean out
cover and plug valve and
other piping, if necessary,
inside valve box to find clog.
Reassemble all valves and
piping. If the basin is still
not pumped down after the
pump is lowered again and the
sealing flange is reconnected,
proceed in a logical manner to
locate and clear the plugging.
high. Check elevation against
design point of pump.
discharge
Check for correct impeller
size and proper voltage.
clogged forced main.
flow.
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