Gorman-Rupp Pumps SE1 1/2A3A 115V 1P 1483930 and up - Manual (Page 16)

OM−06489 SE SERIES
PAGE C − 4 OPERATION
LIQUID LEVEL
Overheating will occur if the liquid falls be-
low the level required to cool the pump mo-
tor.
The pump will operate fully or partially submerged.
However, since the motor is cooled by the liquid
being pumped, overheating will occur if the liquid
is pumped below the required to cool the motor.
Auto-start models will shut down before the liquid
level falls too low.
COLD WEATHER PRESERVATION
Do not attempt to thaw the pump by us-
ing a torch or other source of flame. This
could damage gaskets, O-rings or heat
the oil in the seal housing above critical
temperatures, causing the pump to rup-
ture or explode.
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 sump or wet well and dry it thor-
oughly. 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.
LUBRICATION
Do not remove plates, covers, gauges,
pipe plugs or fittings from an over-
heated pump. Vapor pressure within the
pump can cause parts being disen-
gaged to be ejected with great force. Al-
low the pump to completely cool before
servicing.
On a new pump, check the oil level in the seal cav-
ity before initial startup. Drain and replace the oil af-
ter the first 200 hours of operation. Following this,
check the oil level in the seal cavity after the first two
weeks of operation, and every month thereafter.
Before installing or removing the lubrication plug,
always clean the area around the plug to prevent
contamination.
Draining Oil
Refer to Section E, Maintenance and Repair for
drain plug location.
It is not necessary to drain the oil from the seal cav-
ity unless the pump casing will be separated from
the motor housing.
Lay the pump horizontal on a flat work surface with
the seal cavity drain plug facing up. Remove the
drain plug slowly to release any pressure. Install a
short pipe nipple in the hole. Place a clean contain-
er under the plug and roll the pump on its side to
drain the seal housing.
Condition Of Oil
Check the condition of the oil drained from the
pump. Clear oil indicates that the pump seal is
functioning properly. If the oil is milky or contains
a small amount of water, it must be changed.
If the oil contains a large amount of water, it must
be changed, and the seal must be checked before
the pump is put back in operation (refer to Section
E, Maintenance and Repair).