Flowserve Chemstar standard - Manual (Page 11)

CHEMSTAR USER INSTRUCTIONS ENGLISH 71569185 02-10
Page 11 of 44 flowserve.com
4.3 Foundation
There are many methods of installing
pump units to their foundations. The correct method
depends on the size of the pump unit, its location and
noise and vibration limitations. Non-compliance with
the provision of correct foundation and installation
may lead to failure of the pump and, as such, would
be outside the terms of the warranty.
Ensure the following are met:
a) The baseplate should be mounted onto a firm
foundation, either an appropriate thickness of
quality concrete or sturdy steel framework. (It
should NOT be distorted or pulled down onto the
surface of the foundation, but should be
supported to maintain the original alignment.)
b) Adjustable baseplates having stilt mount feet
have no foundation bolts securing it to the floor.
The feet are adjusted to maintain the top surface
of the baseplate level.
c) The pump and driver have been aligned before
dispatch within the permissible misalignment limits
defined in section 4.5.2, Alignment methods.
d) Where the baseplate does not have stilt mount
feet, install the baseplate onto packing pieces
evenly spaced and adjacent to foundation bolts.
e) Level with shims between baseplate and packing
pieces.
f) Check alignment of pump and motor half
coupling. If this is not correct, it indicates that the
baseplate has become twisted and should be
corrected by re-shimming.
4.4 Grouting
Where applicable, grout in the foundation bolts.
After adding pipework connections and rechecking the
coupling alignment, the baseplate should then be
grouted in accordance with good engineering practice.
Fabricated steel and cast iron baseplates can be filled
with grout. Folded steel baseplates should be grouted
to locate their packing pieces. If in any doubt, please
contact your nearest service centre for advice.
Grouting provides solid contact between the pump
unit and foundation, prevents lateral movement of
running equipment and dampens resonant vibrations.
Foundation bolts should only be fully tightened when
the grout has cured.
4.5 Initial alignment
4.5.1 Thermal expansion
The pump and motor will normally
have to be aligned at ambient temperature with an
allowance for thermal expansion at operating
temperature. (See chart.) In pump installations
involving high liquid temperatures, the unit should be
run at the actual operating temperature, shut down
and the alignment checked immediately.
Motor and pump centre line height adjustment:
Graph based on the assumptions that:
1. Operating temperature rise of the motor frame is 50
°
C (90
°
F).
2. Packing piece/motor stool is not affected.
Operation
1. Enter graph at base to shaft centre line height.
2. Read line for frame material.
3. Set motor shaft and coupling LOW by figure on left-hand side.
4.5.2 Alignment methods
Pump and driver must be isolated
electrically and the half couplings disconnected.
The alignment MUST be checked.