Goulds Pumps CV 3171 - IOM - Manual (Page 21)

CV 3171 IOM 05/11 21
OPERATION
PREPARATION FOR OPERATION.......................................................................................21
OPERATION...........................................................................................................................23
PREPARATION FOR OPERATION
The following options may be supplied with your
pump. Refer to the original data package to see
which options apply.
WARNING
Operation of the unit without proper
lubrication will cause bearing failure
and pump seizure.
External Bearing Flush
There are five 1/4” NPT pipe plugs on the standard
support plate for connection of up to five flush
lines. Pumps with five or more bearings will have
one for each bearing. Pumps with less than five
bearings will still have five plugs, but only the
required number will be connected to a bearing.
Remove the plugs from the holes that are
connected to flush lines. An external source of
clean water capable of delivering 1-2 GPM to
EACH bearing should be connected to the taps.
NOTE: The flush must be turned on PRIOR to
starting the pump and remain on until the pump
turns off.
Grease Lubricated Bearings
Bearings must be lubricated properly
in order to prevent excess heat
generation, sparks and premature
failure.
Grease lubricated bearings will have zerk fittings
installed for each bearing. Bearings are pre-
lubricated at the factory. Unscrew the fittings and
confirm there is adequate grease in the line.
Replace the fitting and add grease if necessary.
Sealed Bearings
Sealed bearings have a lip seal installed above
and below the bearing to exclude grit from the
bearing (Figure 8). Sealed bearings use a spring
loaded grease cup to lubricate the bearings. The
bearings are pre-lubricated at the factory, but the
grease cups may ship in a separate box. The
grease cups should be filled with grease and
screwed into the taps that are connected to the
bearings.
NOTE: The control screw on the pressure cup
should be wide open to start and then
controlled by usage.
The cup should be refilled with fresh grease as
needed. Frequent inspection after startup is
recommended to check usage and establish the
best relubrication interval.
Packed Upper Stuffing Box
Packed stuffing boxes are not allowed
in an ATEX classified environment.
An upper stuffing box is installed for high
Figure 8
4