HPXM USER INSTRUCTIONS ENGLISH 14983571 - 03/11
Page 20 of 48
Figure 4.13
Pump Dowel pin location
Refer to driver outline drawing and/or driver
instructions for driver doweling information.
A hot check can only be made after the unit has been
in operation a sufficient length of time to assume its
NORMAL operating temperature and conditions. If
the unit has been correctly cold set, the offset
misalignment will be within 0.05 mm TIR (0.002 in.
TIR) and the angular misalignment will be within
0.025 mm TIR (0.001 in. TIR) when in operation. If
not make adjustments
Do not attempt any maintenance,
inspection, repair or cleaning in the vicinity of
rotating equipment. Such action could result in
injury to operating personnel.
Before attempting any inspection or repair
on the pump the driver controls must be in the
"off" position, locked and tagged to prevent
restarting equipment and injury to personnel
performing service on the pump.
4.5.5 Assemble coupling
a) Assemble coupling as per the manufacturer's
instructions included in Appendix of this manual.
b) Install coupling guard
4.5.6 Installation check list
a) Level
Baseplate?
b) Grout Baseplate - Check Foundation Bolts?
c) Alignment
Shaft/Coupling?
d) Piping Installed - Correct Vent, Gauge, Valve,
Suction Strainer Locations?
e) All Flange Bolting Correctly Torqued with
appropriate gaskets in place?
f) Check Shaft/Coupling Alignment again.
g) Coupling guard correctly installed?
4.6 Piping
Never use the pump as a support for
piping
4.6.1 General
These units are furnished for a particular service
condition. Changes in the hydraulic system may
affect performance adversely. This is especially true if
the changes reduce the pressure at the suction or if
the liquid temperature is increased. In case of doubt
contact FLOWSERVE
Suction and discharge piping should be of ample
size, be installed in direct runs, and have a minimum
of bends. Double bends must be avoided in suction
line and a straight run of pipe, equal 8 to 10 times the
pipe diameter is desired directly upstream of the
suction nozzle.
In order to minimise friction losses and hydraulic
noise in the pipework it is good practice to choose
pipework that is one or two sizes larger than the
pump suction and discharge. Typically main
pipework velocities should not exceed 2 m/s (6 ft/sec)
suction and 3 m/s (9 ft/sec) on the discharge.
Provision must be made to support piping
external to the pump to prevent excessive nozzle
loads, maintain pump/driver alignment and avoid pipe
induced vibrations.
Take into account the available NPSH which must be
higher than the required NPSH of the pump.
Maximum forces and moments allowed on the pump
flanges vary with the pump size and type. To
minimize these forces and moments that may, if
excessive, cause misalignment, hot bearings, worn
couplings, vibration and the possible failure of the
pump casing, the following points should be strictly
followed:
•
Prevent excessive external pipe load
•
Never draw piping into place by applying force to
pump flange connections
•
Do not mount expansion joints so that their force,
due to internal pressure, acts on the pump flange
Ensure piping and fittings are flushed
before use.
Ensure piping for hazardous liquids is arranged
to allow pump flushing before removal of the pump.
4.6.2 Suction piping
