Instruction and Operation Manual
5
INSTALLATION
Suction and Discharge Piping
Please adhere to the following best practices for
installing and maintaining suction and discharge
piping:
1. Install a suction (35-40 mesh) strainer and
clean the suction line prior to starting the
pump. This procedure will protect the
impeller from damage by mill scale, welding
slag, or other foreign particles during initial
startup.
Note: Sundyne Recommends installation of a
differential pressure instrument across
strainer to indicate strainer condition.
2. When installing piping to the pump, ensure
that all piping is supported independently
from the pump.
3. All piping must always line up with the pump
flanges.
Note: Never use force to position piping into
place at the flanged suction and
discharge connection locations. Failure
to have piping properly aligned may
impose excessive strains on the unit.
4. Sundyne recommends using a straight pipe
assembly of at least three times the length
of the pipe diameter.
Note: Carefully select the size of pipe and
fittings to be installed so that friction
losses will remain low.
5. Never use a suction pipe that is smaller in
diameter than the pump suction inlet.
6. Sundyne recommends installation of a
discharge check valve to prevent reverse
rotation.
7. Use block valves (both suction and
discharge) when isolating the pump during
shutdown. This practice will minimize
process leakage and prevent possible
reverse rotation from pump back-flow.
8. It is recommended that suction and
discharge pressure gauges be installed on
any pump that is not flow controlled. If no
flow measuring device is installed there is no
way to determine accurately where on its
curve the pump is operating.
Diffuser Cavity Vent
The diffuser cavity vent must be open to
atmosphere or to a safety drain with no
backpressure. See figure “Wet End
Components” for location.
Note:
Process fluid may accumulate causing a
potentially hazardous situation if the
diffuser cavity is not properly vented.
Содержание LMV-313
Страница 1: ...SUNDYNE LMV 313 PUMPS Instruction and Operation Manual August 2007 ...
Страница 36: ...Instruction and Operation Manual 32 Figure 15 Inducer Housing Shim Adjustment ...
Страница 40: ...Instruction and Operation Manual 36 Figure 17 Service Check Points ...
Страница 69: ...Instruction and Operation Manual 65 Figure 22 Gearbox Components ...
Страница 70: ...Instruction and Operation Manual 66 Figure 23 Pump Nomenclature ...
Страница 71: ...Instruction and Operation Manual 67 Figure 24 Exploded View ...
Страница 72: ...Instruction and Operation Manual 68 Shaft Assemblies Figure 25 Shaft Assemblies ...
Страница 74: ...Instruction and Operation Manual 70 Single Seal Arrangement and Parts Figure 27 Single Seal Arrangement ...
Страница 76: ...Instruction and Operation Manual 72 Double Seal Arrangement and Parts Figure 28 Double Seal Arrangement ...
Страница 78: ...Instruction and Operation Manual 74 Tandem Seal Arrangement and Parts Figure 29 Tandem Seal Arrangement ...