Flowserve SVCN 7, Установка, эксплуатация и обслуживание

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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
CAUTION
Before starting or while operating the pump, the case and
suction line must be completely filled with the liquid being
pumped. The rotating parts depend on this liquid for
lubrication and the pump may seize if operated without
liquid.
6. Ensure pump recirculation line (if required) is open, clear and free of obstructions.
WARNING
When venting or draining any vessel, which contains
toxic, flammable, or otherwise hazardous fluids, ensure
that the vented or drained fluid is piped to a safe
collector, which will prevent release of the fluid into the
surrounding area. Do not breath toxic vapors.
7. Check that pump is vented by observing leakage from case vent (if installed) and seal piping
vent. Close vent when liquid is emitted.
8. Turn on cooling liquid and ensure correct flow exists (to cooler, gland etc.) as specified.
9. Double-check pump rotation by starting unit momentarily. The direction of input shaft
rotation is counter clockwise when facing pump shaft from coupling end. Ensure that the
pump coasts to a gradual stop.
CAUTION
If pump stops abruptly when driver is shut down, investigate
for pump binding. Take necessary remedial action before
resuming operation.
10. Start the driver in accordance with the manufacturer’s instructions and bring it up to speed
quickly.
11. As soon as the pump is up to rated speed, slowly open discharge valve. This will avoid abrupt
changes in velocity and prevent surging in the suction line.
12. Perform the operating checks outlined in paragraph 3.4.5 below.
13. After unit (particularly units in services 100°F (38°C) or more above ambient) has been
operated a sufficient length of time to reach normal operating temperature and condition, the
unit is to be shut down and a hot alignment check must be performed (see paragraph 2.2.6,
“Hot Alignment”, on page 2-13).
3.4.4 NORMAL START-UP
The starting procedure to be followed for normal start-up is the same as that for initial starting with
the following exceptions:
1. The rotation check of step 9 does not have to be repeated if the pump driver has not been
disturbed since the last pump operation.
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