5 Commissioning, Startup, Operation, and
Shutdown
5.1 Preparation for start-up
NOTICE:
When installing in a potentially explosive environment, ensure that the motor is properly cer-
tified.
Damage occurs from:
Checking rotation
1.
Increased vibration levels-affects bearings, stuffing box or seal chamber and mechanical seal
2.
Increased radial loads Stresses on shaft and bearings
3.
Heat build up-Vaporization causing rotating parts to score or seize
4.
Cavitation-Damage to internal surfaces of pump
CAUTION:
Serious damage may result if pump is run in the wrong direction.
WARNING:
Lock out power to prevent accidental start-up and physical injury.
A check must be made to be sure motor rotation coincides with the pump rotation direction. Depending
on your pump arrangement (V-belt or gear-drive) use one of the following methods to check motor rota-
tion.
Direct connect
1.
Lock out power to the driver.
2.
Remove the pump coupling guard.
3.
Make sure the coupling halves are securely fastened to shafts.
4.
Unlock driver power.
5.
Make sure everyone is clear. Jog the driver just long enough to determine direction of rotation of
the output shaft of the gearbox. Rotation must correspond to an arrow on bearing housing.
6.
Lock out power to driver.
7.
Replace the pump coupling guard.
NOTICE:
The coupling guard used in an ATEX classified environment must be constructed from a
non-sparking material.
5 Commissioning, Startup, Operation, and Shutdown
36
Model AF (42"/1200mm/54"/60"/66") LM/LMR Bearings Installation, Operation, and Maintenance Manual
