Commissioning, Startup, Operation & Shutdown
236 Series Twin-Screw Pump -
Installation, Operation & Maintenance Manual
45
Commissioning, Startup, Operation &
Shutdown
Preparation for startup
WARNING:
•
Risk of serious physical injury or death. Exceeding any of the pump operating limits (e.g.
pressure, temperature, power, etc.) could result in equipment failure, such as explosion,
seizure, or breach of containment. Assure that the system operating conditions are within
the capabilities of the pump.
•
Risk of death or serious injury. Leaking fluid can cause fire and/or burns. Ensure all
openings are sealed prior to filling the pump.
•
Breach of containment can cause fire, burns, and other serious injury. Failure to follow
these precautions before starting the unit may lead to dangerous operating conditions,
equipment failure, and breach of containment.
•
Risk of explosion and serious physical injury. Do not operate pump with blocked system
piping or with suction or discharge valves closed. This can result in rapid heating and
vaporization of pumped fluid.
•
Risk of breach of containment and equipment damage. Ensure the pump operates only
between minimum and maximum rated flows. Operation outside of these limits can cause
high vibration, mechanical seal and/or shaft failure, and/or loss of prime.
WARNING:
•
Running a pump without safety devices exposes operators to risk of serious personal
injury or death. Never operate a unit unless appropriate safety devices (guards, etc.) are
properly installed.
•
Failure to disconnect and lock out driver power may result in serious physical injury or
death. Always disconnect and lock out power to the driver before performing any
installation or maintenance tasks.
•
Electrical connections must be made by certified electricians in compliance with all
international, national, state, and local rules.
•
Refer to driver/coupling/gear manufacturer's installation and operation manuals (IOM) for
specific instructions and recommendations.
•
Do not change the relief valve settings this can course serious damage on the pump.
Precautions
NOTICE:
•
Verify the VFD and driver connections and settings before you start the pump.
•
Excessive warm-up rates can cause equipment damage. Ensure the warm-up rate does
not exceed 2.2°C (4°F) per minute.
•
The maximum allowable temperature change for an abnormal transient event such as
thermal shock is 83°C (150°F).
