ITT Goulds Pumps IC, Инструкция по установке, эксплуатации и обслуживанию

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5.11 Pump operation precautions
General considerations
NOTICE:
• Vary the capacity with the regulating valve in the discharge line. Never throttle the
flow from the suction side. This action can result in decreased performance, unex-
pected heat generation, and equipment damage.
• Risk of equipment damage from unexpected heat generation. Do not overload the
driver. Ensure that the pump operating conditions are suitable for the driver. The driv-
er can overload in these circumstances:
• The specific gravity or viscosity of the fluid is greater than expected
• The pumped fluid exceeds the rated flow rate.
Operation at reduced capacity
WARNING:
• Risk of breach of containment and equipment damage. Excessive vibration levels can
cause damage to bearings, stuffing box, seal chamber, and/or mechanical seal. Ob-
serve pump for vibration levels, bearing temperature, and excessive noise. If normal
levels are exceeded, shut down and resolve.
• Risk of explosion and serious physical injury. Do not operate pump with blocked sys-
tem piping or with suction or discharge valves closed. This can result in rapid heating
and vaporization of pumpage.
• Risk of equipment damage and serious physical injury. Heat build-up can cause rotat-
ing parts to score or seize. Observe pump for excessive heat build-up. If normal levels
are exceeded, shut down and resolve.
NOTICE:
Cavitation can cause damage to the internal surfaces of the pump. Ensure net positive suc-
tion head available (NPSH
A
) always exceeds NPSH required (NPSH
3
) as shown on the
published performance curve of the pump.
Operation under freezing conditions
NOTICE:
Do not expose an idle pump to freezing conditions. Drain all liquid that will freeze that is
inside the pump and any auxiliary equipment. Failure to do so can cause liquid to freeze
and damage the pump. Note that different liquids freeze at different temperatures. Some
pump designs do not drain completely and may require flushing with a liquid that doesn't
freeze.
5.12 Shut down the pump
WARNING:
Precautions must be taken to prevent physical injury. The pump may handle hazardous
and/or toxic fluids. Proper personal protective equipment should be worn. Pumpage must
be handled and disposed of in conformance with applicable environmental regulations.
1. Slowly close the discharge valve.
2. Shut down and lock out the driver to prevent accidental rotation.
5.11 Pump operation precautions
Model IC, ICI, ICH, ICIH Installation, Operation, and Maintenance Manual 61