Goulds Pumps 3393 - IOM - Manual (Page 36)

Commissioning, Startup, Operation, and Shutdown
Commissioning, Startup, Operation, and
Shutdown
Preparation for startup
When installing in a potentially explosive environment, ensure that the motor is properly
certified.
DANGER:
Avoid death or serious injury. Explosion and/or seizure of pump can cause fire and/or burns. Never
operate pump past the pressure and temperature limits shown on the nameplate on the pump.
WARNING:
• Failure to follow these precautions before you start the unit will lead to serious personal injury and
equipment failure.
• When installing in a potentially explosive environment, make sure that the motor is properly certified
and that all equipment is installed in accordance with instructions for that environment.
• Do not operate the pump dry.
• Do not operate the pump below the hydraulic or thermal minimum rated flows or with the suction or
discharge valves closed. These conditions can create an explosive hazard due to vaporization of
pumped fluid and can quickly lead to pump failure and physical injury.
• Avoid death or serious injury. Leaking fluid can cause fire and/or burns. Operating the pump above
maximum rated flow shown on the pump curve leading to an increase in horsepower and vibration
along with an increase in NPSHr resulting in mechanical seal and/or shaft failure and/or loss of
prime.
• Avoid death or serious injury. Leaking fluid can cause fire and/or burns. Speed of pump must reach
2700 rpm within 5 seconds or an increase in vibration and rotor deflection and decrease in rotor
stability leading to mechanical seal and/or shaft failure and/or pump seizure can occur.
• 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.
• Operating the pump in reverse rotation can result in the contact of metal parts, heat generation, and
breach of containment.
• Service temperature in an ATEX classified environment is limited to the area classification specified
on the ATEX tag affixed to the pump (reference Table 1 in the Safety Section for ATEX
classifications).
• Avoid death or serious injury. Explosion and/or seizure of pump can cause fire and/or burns. Assure
balance line is installed and either piped to the pump suction or back to the suction vessel to avoid
vaporization of pumped fluid.
DANGER:
Avoid death or serious injury. Leaking fluid can cause fire and/or burns. Assure all openings are sealed
off prior to filling pump.
Precautions
NOTICE:
• Verify the driver settings before you start any pump.
• Make sure that the temperature change does not exceed 9°F (5°C) per minute.
• The maximum allowable temperature change for an abnormal transient event such as
thermal shock is 185°F (103°C).
You must follow these precautions before you start the pump:
34 Model 3393 Installation, Operation, and Maintenance Manual