Grundfos Peerless Pump 8196 Series, Installation, Operation And Maintenance Manual

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When significant operating temperature differential will exist between the pump and driver (i.e. steam turbine drive
with pump handling cold liquid), thermal growth will cause the hotter unit to rise. Compensate for this growth by
initially setting the hotter unit 0.003 inch to 0.005 inch low. When both units are at normal operating temperature, a
final check of coupling alignment must be made. Correct the alignment if necessary.
Check for correct electric motor rotation as described in paragraphs (a) and (b) under paragraph IlM while
coupling halves are disconnected.
II-G. ALIGNMENT ADJUSTMENT
Since all base plates are flexible; they may be distorted from transportation or handling. Therefore, it may be necessary
to correct excessive parallel and angular misalignment by slightly shifting the leveling wedges under the base plate.
Tap lightly (in or out) with a hammer. Recheck alignment after each shifting of a wedge.
(a) . In some instances, for factory aligned pumping units, it may be necessary to change the shims under the pump or
driver, or even relocate these factory-positioned units on the base plate. Make such changes only after it is
certain that alignment cannot be obtained by shifting of the wedges.
(b) If wedges are shifted or shims changed a substantial amount to obtain proper alignment, recheck the piping
alignment and level of the shafts.
Pumping unit shafts must be level, have proper alignment and the piping must mate with the pump flanges
without strain. All three conditions must be correct to provide proper performance and long life of the pumping
unit
II-H. ALIGNMENT RECHECK
alignment, and correct as required, after:
(a) Mounting,
(b) The grout has hardened,
(c) Foundation bolts are tightened, (d)
Piping is connected,
(e) Pump, driver, or base plate is moved for any reason.
II-I. GROUTING
Unless otherwise specified on the unit outline drawing, the base plate must be filled with grout and the leveling
wedges grouted in place. The product warranty IS
VOID if this instruction is not followed.
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NOTE