Goulds Pumps NM3171 - IOM - Manual (Page 19)

OPERATION
PREPARATION FOR OPERATION . . . . . . . . . . . . . . . . . . . . . . 13
Motor Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Pump Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Check For Free Turning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Priming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Start-Up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Operation Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Operating with Surge Conditions In Line . . . . . . . . . . . . . . . . . . . . . . . . . 14
Freezing Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Shutdown Practice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
PREPARATION FOR OPERATION
MOTOR BEARINGS
Check and follow motor manufacture's lubrication
instructions.
PUMP BEARINGS
The upper (ball) bearing (112) is greased for life. No
additional lubrication is necessary.
Optional regreasable ball bearing is available upon
request. Grease is applied as standard from Goulds
Pumps. The bearing must be regreased periodically
through the grease fitting in the bearing housing.
The column bearings (213) are a sleeve type and
are made of Rulon, a corrosion resistant
non-metallic bearing material. The bearings must be
lubricated. If the pumpage is clean and suitable for
lubrication, a bypass off the discharge is possible. If
not, a connection above the mounting plate (189)
will be provided for bearing lubrication. A flow of
15-30 GPH (gallons per hour) (57-115 liters per
hour) of clean water is sufficient to lubricate the
bearing.
COUPLING
Assure that the coupling is properly lubricated if
required by the coupling manufacturer's instructions.
CHECK FOR FREE TURNING
Before pump is started, rotate shaft by hand to be
sure it is free. If pump cannot be turned by hand, or
binding or rubbing is noticed, refer to Installation of
Unit in Pit, Step 4 (page 11).
Install coupling guard securely before starting the
pump to prevent serious injury.
PRIMING
The pump must be full of liquid with specified
submergence head above centerline of impeller.
NM 3171 IOM 5/08
13