Bell & Gossett P81629F Series 80 In-Line Mounted Centrifugal Pump - Manual (Page 16)

Check Explanation/comment Checked
For pumps mounted in vertical piping with the motor
in the horizontal position, check that adequate
support is provided.
This prevents strain on the pump parts and
piping. Do not mount the pump with the motor
vertically downward. Do not use motor lift rings
to suspend the pump.
Check that the suction or discharge lines are not
forced into position.
Coupling and bearing wear will result if suction
or discharge lines are forced into position.
The code for Pressure Piping (A.S.A.B. 31.1) lists
many types of supports available for various
applications.
Check that fittings for absorbing expansion are
installed in the system when considerable
temperature changes are expected.
This helps to avoid strain on the pump.
Check that you have a foot valve of equal or greater
area than the pump suction piping when you use in
an open system with a suction lift.
Prevent clogging by using a strainer at the
suction inlet next to the foot valve. Make sure
that the strainer has an area three times that of
the suction pipe with a mesh hole diameter of
no less than 0.25 in. (0.64 cm).
Check that flexible piping is used on both the suction
and discharge sides of the pump when you use an
isolation base.
—
Check that a B&G Triple Duty ® valve is installed in the
discharge line.
This valve serves as a check valve that protects
the pump from water hammer, and serves as an
isolation valve for servicing and for throttling.
Check that the pipeline has isolation valves around
the pump and has a drain valve in the suction pipe.
—
Typical installation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1. Expansion tank
2. B&G Rolairtrol
® air separator
3. Supply to system
4. TPV tank purge system
5. B&G Triple Duty
® valve
6. B&G Series 80 Pump
7. B&G Suction Diffuser
8. Isolation valve
9. Pipe from boiler, chiller, or converter
10. Cold water supply
11. B&G Pressure Reducing Valve
12. B&G Model 107A — high capacity vent
13. B&G #7 or #87 Air Vent
14. Drain valve
Check that the control and safety devices have these characteristics:
• Properly sized for their purpose
• Placed correctly in the system before putting the system into operation
Installation
14 Series 80 Installation, Operation, and Maintenance Manual