•
The pumped fluid exceeds the rated flow rate.
•
Do not operate pump past maximum flow. For maximum flow refer to pump performance
curve.
•
Do not operate pump below hydraulic or thermal minimum flow. For hydraulic minimum
flows refer to technical manual and pump performance curves. To calculate thermal mini-
mum flow, refer to HI Centrifugal Pump Design and Application ANSI/HI 1.3-2000.
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. Observe
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 system
piping or with suction or discharge valves closed. This can result in rapid heating and va-
porization of pumpage.
•
Risk of equipment damage and serious physical injury. Heat build-up can cause rotating
parts to score or seize. Observe pump for excessive heat build-up. If normal levels are
exceeded, shut down and resolve.
CAUTION:
•
The pump and system must be free of foreign objects. If pump becomes plugged, shut
down and unplug prior to restarting the pump.
NOTICE:
Cavitation can cause damage to the internal surfaces of the pump. Ensure net positive suction
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.
5.13 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.
5.13 Shut down the pump
68
Models 3180, 3181, 3185, and 3186 Installation, Operation, and Maintenance Manual
Содержание GOULDS PUMPS 3180
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