ITT Goulds Pumps API 3171, Инструкция по установке, эксплуатации и обслуживанию

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Installation
Model API 3171 Installation, Operation, and Maintenance Manual 28
Check Explanation/comment Chec
ked
For outside tank mount and dry
pit applications, install an isola-
tion valve in the suction line at
least two pipe diameters from
the suction. This allows the line to be closed for pump inspection and
maintenance. The isolation valve must be kept fully open during
operation.
Make sure that the entrance to
the suction pipe is kept ade-
quately submerged below the
free liquid surface. This prevents vortices and air entrainment.
For an outside tank mount ap-
plication, make sure that a col-
umn assembly is installed. The column assembly allows the fluid that comes through the
lower bushings to flow up through the column and back through
the connection at the top of the column back to the tank.
Connect the pipe at the top of the pump column back to the
source tank in order to prevent fluid from entering the thrust
bearing.
Steam lines
Checklist
Check Explanation/comment Checked
Before you install the pump, be-
come familiar with the location of
the steam lines. There are three connections above the support plate:
• Two steam connections
• One condensate return connection.
The steam connections are connected to the tops of the
column and discharge jackets.
Determine which method to use in
order to connect the steam lines. There are two methods you can use in order to connect
the steam lines:
• You can use both steam lines as input for steam
(preferred method).
• You can use one steam line as input for steam,
while the other steam line is used as a feed through
to additional pumps.
Only use this method if absolutely necessary,
because it is difficult to control the steam at
subsequent pumps.
Before you install the pump,
check the fittings for leaks. Use
plant air or high pressure water. The jackets are hydrotested by the factory at 100 psi
before shipment. However, the tube fittings can become
loose during transit.
If you use air to check for leaks, use a soap solution at
each joint in order to check for air bubbles.
Provide source of steam at 35 psi
and 149°C | 300°F. Less than ideal conditions require higher pressure
steam in order to keep the correct temperature.
After the pump is brought to tem-
perature for the first time, shut
down the unit temporarily and
readjust the impeller clearance. Refer to Impeller clearance setting in the Operations
chapter.
Final piping checklist
Check Explanation/comment Checked
Check that the shaft rotates smoothly. Rotate the shaft by hand. Make sure there is no
rubbing that can lead to excess heat generation or
sparks.
Re-check the alignment to make sure
that pipe strain has not caused any
misalignment. If pipe strain exists, then correct the piping.