Goulds Pumps 3355 - IOM - Manual (Page 31)

Commissioning, Startup, Operation, and Shutdown
1. Nut
2. Washer
3. Bolt
4. Put the driver half of the coupling guard in place:
a) Slightly spread the bottom apart.
b) Place the driver half of the coupling guard over the pump half of the coupling guard.
The annular groove in the coupling guard half must face the motor.
5. Place the driver-side end plate over the motor shaft.
6. Place the driver-side end plate in the annular groove of the driver-half of the coupling
guard.
7. Use a bolt, a nut, and two washers to secure the coupling guard half to the end plate. Hand-
tighten only.
The hole is located on the driver-side of the coupling guard half.
8. Slide the driver-half of the coupling guard towards the motor so that the coupling guard
completely covers the shafts and coupling.
9. Use a nut, a bolt, and two washers to secure the coupling guard halves together.
10. Tighten all nuts on the guard assembly.
WARNING:
Never operate the pump without the coupling guard correctly installed.
Pump priming
CAUTION:
Do not run the pump dry.
Never start the pump until it has been properly primed. Several different methods of priming
can be used, depending on the type of installation and service involved.
Prime the pump with the suction supply above the pump
1. Slowly open the suction isolation valve.
2. Open the air vents on the suction and discharge piping, the casing, the seal chamber, and
the seal piping, if provided, until all air is vented and only the pumped fluid flows out.
3. Close the air vents.
Prime the pump with the suction supply below the pump
Use a foot valve and an outside source of liquid in order to prime the pump. The liquid can
come from one of these sources:
• A priming pump
• A pressurized discharge line
• Another outside supply
1. Close the discharge isolation valve.
2. Open the air vent valves in the casing.
Model 3355 Installation, Operation, and Maintenance Manual 29