Gorman-Rupp Pumps S3B65-E6 460/3 861279 thru 1217130 - Manual (Page 31)

S SERIES PUMPS OM−04151
PAGE C − 5 OPERATION
eration, and every month thereafter. Check the mo-
tor lubrication level any time the pressure relief
valve is activated, and replace the oil annually.
Before installing or removing the lubrication
plug(s), always clean the area around the plug(s)
to prevent contamination.
Draining Oil
Refer to the Parts List Manual for drain plug loca-
tion.
For the smaller pump, 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 container under the plug and roll the
pump on its side to drain the seal housing.
For the larger pump, remove the drain plug slowly
to release any pressure. Install a short pipe nipple
in the hole. Place a clean container under the plug
and using a hoist, tilt the pump at an angle of
approximately 60 degrees.
If the motor is oil-cooled, repeat the procedure for
the motor housing oil.
Condition Of Oil
Check the condition of the oil drained from the
pump. Clear oil indicates that the pump seal(s) are
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(s) must be checked be-
fore the pump is put back in operation (refer to the
Maintenance and Repair Manual).
Adding Oil
Due to differences in pump design, the quantity of
oil and manner in which oil is to be added to the
seal cavity varies between pump models. Refer to
Table B−2 in INSTALLATION for oil capacities and
positions for filling the seal cavity in each pump.
Motor cavities requiring lubrication should always
be positioned vertically for filling.
The grade of lubricant used is critical to the opera-
tion of this pump. Use premium quality submers-
ible pump oil as specified in the following table. Oil
must be stored in a clean, tightly closed container
in a reasonably dry environment.
When lubricating the seal cavity, remove the lu-
brication plug as indicated in Draining Oil, and
position the pump as indicated in Table B−2. Add
premium quality submersible pump oil through
this plug hole. If the pump is to be positioned verti-
cally or at an angle, fill the cavity to the bottom of
the plug hole. If the pump is to be positioned hori-
zontally, completely fill the cavity.
Install and tighten the lubrication plug.
When lubricating the motor cavity, add oil through
the hole for the pressure relief valve. If the pump is
equipped with a motor lubricant level plug, remove
this plug and fill the cavity until oil escapes through
the hole. If the pump is not equipped with a motor
lubricant level plug, fill the cavity to the top of the
hole.
Reinstall the pressure relief valve.