Gorman-Rupp Pumps SFDV4A 1476538 and up - Manual (Page 20)

SF SERIES OM-06406
PAGE C - 7 OPERATION
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, and drain and replace the
oil after 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 plugs,
always clean the area around the plugs to prevent
contamination.
Draining Oil
Refer to the Parts List in Maintenance and Repair
- Section E for drain plug location.
Lay the pump on its side with one of the pipe plugs
(7) facing up. Clean any dirt from around the plug.
Remove the plug slowly to release any pressure
and install a short 3/8‐inch NPT nipple in the hole.
Roll the pump and drain the seal oil into a clean
container.
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 (Mainte­
nance and Repair - Section E).
Adding Oil
Refer to Maintenance and Repair - Section E for
the oil capacity for filling the seal cavity in your
pump.
The grade of lubricant used is critical to the opera­
tion of this pump. Use premium quality submers­
ible pump oil as specified in Table E-2 in Mainte­
nance and Repair - Section E. Oil must be stored
in a clean, tightly closed container in a reasonably
dry environment.
When lubricating the seal cavity, position the pump
vertically after draining the oil as indicated above
in Draining Oil. Add premium quality submersible
pump oil through the fill plug hole until the oil is lev­
el with the bottom of the plug hole.
Install and tighten the fill plug.