Coupling Alignment (Kp) - Grundfos KP Notice D'installation Et De Fonctionnement

4.8 Coupling alignment (KP)

1. If the pump and motor were shipped mounted on a common
base frame as an assembly, remove the coupling guard.
2. Checking parallel and angular alignment
Place a straight edge and feeler gauges or a dial indicator
across both coupling hubs to check for horizontal, vertical,
and angular misalignment of the coupling hubs. See fig. 9.
Coupling 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, or when the straight edge contacts both
hubs evenly in both horizontal and vertical positions. 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.
3. Check shaft alignment once again after final piping
connections to the pump have been made, motor wiring
checked, correct direction of rotation has been established,
and pipes have been filled with liquid. See figs
KP, checking angular or parallel alignment
Fig. 9
Clockwise (CW) rotation
Fig. 10 KP, plan view clockwise (CW) rotation
Outlet
10 and 11.
Inlet
Fig. 11 KP, plan view counterclockwise (CCW) rotation
• Leave the coupling guards off until the pump priming
procedure has been completed.
• Install the coupling guards after installation has been
completed to protect personnel from rotating machinery.
Counterclockwise (CCW)
rotation
WARNING
Moving machine parts or blades
Death or serious personal injury
- Ensure an approved coupling guard is in place
before operating the product. Failure to observe
this warning could result in injury to operating
personnel.
Outlet
Inlet
11