Flowserve SVCN 7, Установка, эксплуатация и обслуживание

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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
2. The hot alignment check of step 13 does not have to be performed if the pump coupling has
not been disturbed since the last pump operation.
3.4.5 OPERATING CHECKS
WARNING
In the interest of operator safety the unit must not be
operated above the nameplate conditions. Such
operations could result in unit failure causing injury to
operating personnel. Consult instruction book for correct
operation and maintenance of the pump and its
supporting components.
CAUTION
Operation at low flows results in pump horsepower heating
the liquid. A bypass may be required to prevent vaporization
and subsequent pump damage. Refer to your local Flowserve
office to determine if a bypass is required. Mechanical
damage may result from continuous operation at flows less
than the specified minimum continuous stable flow.
Immediately after start up, and frequently during running check the following:
1. Check suction and discharge pressure gauges.
2. Check pressure gauges on each side of suction strainer.
CAUTION
Excessive tightening of the packing gland increases packing
wear which in turn is apt to result in burned packing and a
scored shaft sleeve.
3. After running pumping for 10 to 15 minutes, check for leakage around shaft sleeve. A pump
with a mechanical seal should have no leakage. A pump with packing must have leakage; a
nominal rate is five to fifteen drops per minute. To obtain this rate, secure the pump, then
proceed as follows:
a. If leakage is insufficient, then loosen the packing gland nuts by a single flat.
b. If leakage is excessive, then tighten the packing gland nuts by a single flat.
Restart the pump and allow the leakage to stabilize for several minutes before checking
leakage rate again.
4. Check for unusual noises.
DO2604-13 - 3-10 -