Xylem GSSERVICE R2 Service Manual Submersible Pumps & Jet Pumps - Manual (Page 89)

87
!
WARNING!
Prolonged reverse rotation operation
can cause pump/motor damage.
RO
T
A
TION
Correct rotation is a must on all 3Ø
installations. Rotation can be checked by
one of these three ways:
Visual 1
1. Connect 3 motor leads to starter, run unit at
open discharge.
2. Switch any 2 leads and again run unit at
open discharge.
3. Largest quantity of water indicates correct
rotation.
Visual 2
1. Remove water end from meter. Run motor
and observe rotation
Pressure
1. Connect 3 motor leads to starter. Run unit
against closed discharge, take maximum
pressure reading.
2. Switch any 2 leads and again run unit
against closed discharge. Take maximum
pressure reading.
3. Highest pressure reading indicates correct
rotation.