Goulds Pumps 3700 - IOM - Manual (Page 37)

Commissioning, Startup, Operation, and Shutdown
Commissioning, Startup, Operation, and
Shutdown
Preparation for startup
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.
• Never operate the pump below the minimum rated flow, when dry, or without prime.
• Do not operate the pump below the 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
2000 rpm for 2 pole motors and 1000 rpm for 4 pole motors within 10 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.
• Foreign objects in the pumped liquid or piping system can block the flow and cause excess heat
generation, sparks and premature failure. Make sure that the pump and systems are free of foreign
objects before and during operation.
• A build-up of gases within the pump, sealing system, or process piping system may result in an
explosive environment. Make sure the process piping system, pump and sealing system are properly
vented prior to operation.
• Sealing systems that are not self-purging or self-venting, such as plan 23, require manual venting
prior to operation. Failure to do so will result in excess heat generation and seal failure.
• Never operate the pump without the coupling guard correctly installed.
• 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.
• 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 35°F (19°C) per minute.
• The maximum allowable temperature change for an abnormal transient event such as
thermal shock is 400°F (205°C).
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 35
Manual