Goulds Pumps 3393 - IOM - Manual (Page 37)

Commissioning, Startup, Operation, and Shutdown
• Flush and clean the system thoroughly to remove dirt or debris in the pipe system in order
to prevent premature failure at initial startup.
• Bring variable-speed drivers to the rated speed within 5 seconds.
• If temperatures of the pumped fluid will exceed 200°F (93°C), then warm up the pump prior
to operation. Refer to Warm Up Piping in the Auxiliary-piping checklist.
At initial startup, do not adjust the variable-speed drivers or check for speed governor or over-
speed trip settings while the variable-speed driver is coupled to the pump. If the settings have
not been verified, then uncouple the unit and refer to instructions supplied by the driver
manufacturer.
Variable Speed Operation
If the 3393 is to be run with a variable speed drive, please confirm that the application has been
approved by the factory. Variable speed operation is limited to 2700 to 3600 rpm unless a
lateral critical speed analysis has been conducted by the factory and the speed range has been
approved for operation. In all cases it is imperative that the pump be brought up to its minimum
operating speed as quickly as possible. This ramp up time should not exceed 5 seconds.
Remove the coupling guard
1. Remove the nut, bolt, and washers from the slotted hole in the center of the coupling guard.
2. Slide the driver half of the coupling guard toward the pump.
3. Remove the nut, bolt, and washers from the driver half of the coupling guard.
4. Remove the driver-side end plate.
5. Remove the driver half of the coupling guard:
a) Slightly spread the bottom apart.
b) Lift upwards.
6. Remove the remaining nut, bolt, and washers from the pump half of the coupling guard.
It is not necessary to remove the end plate from the pump side of the bearing housing. You
can access the bearing-housing tap bolts without removing this end plate if maintenance of
internal pump parts is necessary.
7. Remove the pump half of the coupling guard:
a) Slightly spread the bottom apart.
b) Lift upwards.
Check the rotation
WARNING:
• Operating the pump in reverse rotation can result in the contact of metal parts, heat generation, and
breach of containment.
• Always disconnect and lock out power to the driver before you perform any installation or
maintenance tasks. Failure to disconnect and lock out driver power will result in serious physical
injury.
1. Lock out power to the driver.
2. Make sure that the coupling hubs are fastened securely to the shafts.
3. Make sure that the coupling spacer is removed.
The pump ships with the coupling spacer removed.
4. Unlock power to the driver.
5. Make sure that everyone is clear, and then jog the driver long enough to determine that the
direction of rotation corresponds to the arrow on the bearing housing or close-coupled
frame.
6. Lock out power to the driver.
Model 3393 Installation, Operation, and Maintenance Manual 35