JD Series
OM-05724
PAGE C - 4
OPERATION
ated against a closed discharge valve for an ex
tended period of time.
Do not start the pump more than 10 times
per hour. If the motor does not cool be
tween starts it will overheat, resulting in
damage to the motor windings or control
box components.
Cold Weather Preservation
The pump will not freeze as long as the casing is
submerged in liquid. If the casing is not sub
merged, or if the liquid begins to freeze, remove the
pump from the wet well and dry it thoroughly. Run
the pump for two or three minutes to dry the inner
walls.
If the pump does freeze while it is out of the liquid,
submerge it until thawed; if the liquid is near freez
ing, the pump must be submerged for an extended
period of time. Check thawing by starting the pump
and checking that the shaft rotates freely. If the
pump remains frozen allow additional thawing time
before attempting to restart.
If submerging does not thaw the pump, move it
into a warm area until completely thawed.
Do not attempt to thaw the pump by us
ing a torch or other source of flame. This
could damage O‐rings or heat the oil in
the seal housing above critical tempera
tures, causing the pump to rupture or
explode.
