Start-Up Procedures - Goulds Pumps 3935 Installation, Operation And Maintenance Instructions

3. Alignment
4. Mechanical Seal
5. Priming
6. Check for Free Turning

Start-up Procedures

1. Valves
Model 3935 Installation, Operation and Maintenance Instructions
d) Install the nipple-elbow assembly so that the long nipple ¼ NPT x 44mm | 1.75" long]
extends horizontally from the frame to the 90 degree elbow and the close nipple
vertically from the elbow to the Bottom connection of the oiler. Refer to Dimensional
checks figure.
If oil level is too high (splashes out of breather), lower level 1.5mm | 0.06" at a time until
splashing stops.
1. Oil level
2. Side connection
3. 1/4" nipple-elbow assembly
4. Bearing frame
5. Initial setting for internal adjuster.
Figure 1: Dimensional checks
e) Fill bearing reservoir using oiler bottle. Several fillings will be required. Never fill the
frame through the frame breather located at the top of the frame or through the oiler
without use of the bottle. This can result in overfilling and high oil temperature.
f) After starting pump, remove the breather. Oil viewed through the breather hole should
be a mist. If oil is thrown out of the breather hole, or an oil mist is not visible, recheck all
dimensions shown in Figure: Dimensional checks.
As described in Alignment procedures
be checked.
Refer to Mechanical seals
outside source is being used, establish these flows.
Pump and suction pipe must be full of liquid before pump is started. Usually, suction supply
will be primed when shut-off valves to pump are opened. If suction supply is below pump,
priming by other means such as foot valve or ejector will be required.
Before pump is started, rotate shaft by hand to be sure it is free. If pump cannot be turned
by hand, or binding and rubbing are noticed, correct before starting.
Be sure suction valve is fully open. Normally, discharge valve should be at least partially
closed so that flow will be controlled.
(page 4), alignment is normally built-in and need not
(page 5). If auxiliary piping for cooling and/or flushing from an
Operation
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