Flowserve IJ, Installation Operation & Maintenance

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IJ PUMP OPERATION AND MAINTENANCE MANUAL
BO2660-01 3-20
3. Minor distortion in the baseplate may occur when it is bolted to its own foundation, which in
turn may produce some misalignment between pump and driver if they are aligned and
coupled before the baseplate is leveled and anchored on its foundation.
4. Alignment adjustment may be required to compensate for the strain on the pump and the
baseplate that may be imposed by loads transmitted from the plant's system via the suction
and discharge piping.
5. The factory alignment of a pump would be performed at an average temperature of 75°F
(24°C). Since operation of a pump at a different temperature would cause alignment changes
due to thermal effects on the pump's pedestal position, final alignment must be made with the
pump and driver at their actual operating temperature.
3.4.4 ALIGNMENT PRECONDITIONS
To make the alignment tasks easier and to prevent pump and driver from working into a state of
misalignment, before starting the tasks, you should make certain:
1. that baseplate or soleplate(s) is level and anchored (see LEVELING BASEPLATES OR
SOLEPLATES);
2. that baseplate or soleplate(s) is properly grouted (see INSTALLING NOZZLE
EXTENSIONS AND GROUTING);
3. that cradle, where applicable, has been leveled to soleplate, using vertical leveling screws and
precision machinist level or equivalent tool;
4. that pump holddown bolts are tight;
5. that suction and discharge piping is not connected to pump until after completion of initial
cold alignment;
6. that pads on baseplate or soleplate(s) and driver feet are thoroughly cleaned.
NOTE
For installation of keyless coupling using hydraulic
pressure, see the COUPLING INSTALLATION drawing in
the back of this manual; or refer to the coupling
manufacturer's instructions in the APPENDIX, whichever is
listed in the CONTENTS of your manual.
3.4.5 INSTALLING COUPLING
For an outline of coupling installation tasks, see COUPLING in REPLACEMENT AND REPAIR.
3.4.6 SETTING DRIVER SHAFT ENDSPACE
If your pump is driven by a motor; to prevent destruction of motor sleeve bearings, which are usually
found in heavy-duty electric motors, locate your motor in relation to the pump so as to ensure the
required running clearance (or endspace) between the thrust collars on the motor shaft and the face of
the motor bearings (see MOTOR SHAFT RUNNING CLEARANCE figure below). To establish the
required endspace proceed as follows: