English (US)
8
4.4.5 Coupling alignment of LF pumps
The pump and motor were accurately aligned from factory, but
handling during shipment usually alters this pre-alignment.
1. If the pump and motor were shipped mounted on a common
base frame as an assembly, remove the coupling guard.
2. Checking parallel alignment
Place a straight edge across both coupling rims at the top, the
bottom and both sides. See fig. 4. After each adjustment,
recheck all features of alignment. Parallel alignment is correct
when the measurements show that all points of the coupling
faces are within ± 0.005 in. (0.127 mm) of each other.
If misalignment is detected, loosen the motor and shift or shim
as necessary to re-align. Then re-tighten the anchor bolts.
Always align the motor to the pump as pipe strain will occur if
the pump is shifted. Never reposition the pump on the base
frame.
Fig. 4 Checking parallel alignment
3. Checking angular alignment
Insert a pair of inside callipers or a taper gauge at four points
at 90 ° intervals around the coupling. See fig. 5. Angular
alignment is correct when the measurements show that all
points of the coupling faces are within ± 0.005 in. (0.127 mm)
of each other.
– If misalignment is detected, loosen the motor and shift or
shim as necessary to re-align. Then re-tighten the anchor
bolts. Always align the motor to the pump as pipe strain will
occur if the pump is shifted. Never reposition the pump on
the base frame.
Fig. 5 Checking angular alignment
– Check shaft alignment once again after final pipe
connections to the pump have been made, motor wiring
verified, correct direction of rotation has been established,
and pipes have been filled with liquid.
4. Leave the coupling guards off until the pump priming
procedure has been completed.
5. Install the coupling guards after installation has been
completed to protect personnel from rotating machinery.
Coupling alignment of LCS pumps
Alignment of the pump and motor is not required.
4.5 Electrical connection
TM05 4794 2613
TM05 4795 2613
DANGER
Electric shock
Death or serious personal injury
- The electrical installation must be carried out by a
qualified electrician in accordance with local
regulations and the manuals provided with the
electrical accessories.
DANGER
Electric shock
Death or serious personal injury
- Before starting any work on the product, make
sure that the power supply has been switched off
and that it cannot be accidentally switched on.
LC_LCV_LF_LCS_1 language_US Eng.book Page 8 Thursday, August 24, 2017 4:08 PM
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