Flowserve SVCN 7, Установка, эксплуатация и обслуживание

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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
2. Ensure the pump and piping is clean. Before placing the pump in operation, the piping should
be thoroughly back flushed to remove any foreign matter, which may have accumulated
during installation.
3. Install the suction strainer (see paragraph 2.1.2.1, “Suction Strainer”, on page 2-1).
4. Fill the bearing housing with the appropriate oil to the correct level in accordance with
section 3.3, “Lubrication”, on page 3-4. The bearings must receive a small amount of oil prior
to starting to ensure adequate lubrication at start-up.
5. Turn pump rotor by hand or with a strap wrench to ensure it turns smoothly.
6. Ensure that the correct seal piping has been installed and that it is undamaged.
7. Ensure coupling is correctly aligned and lubricated, and pump and driver is satisfactorily
doweled (see paragraph 2.2, “Shaft Alignment”, on page 2-5).
8. Ensure coupling guard is correctly installed.
WARNING
The unit must not be operated unless coupling guard is
securely and completely bolted in place.
9. Check torque of all bolting and plugs for tightness.
3.4.3 INITIAL START UP PROCEDURE
1. Close discharge valve if valve is not already closed, and then crack it open to ensure minimal
flow. (Do not start pump with a fully closed discharge valve). On first starts care must be
taken not to cause a system water hammer.
2. Prepare the driver for start up in accordance with the driver manufacturer’s instructions.
3. Check the oil level in the bearing housing to ensure sufficient oil is available for bearing
lubrication. Replenish oil as necessary in accordance with section 3.3, “Lubrication”, on page
3-4. Also ensure that bearing housing oil temperature is greater than 60°F (15.6°C).
4. Warm up pump.
The pump must be preheated prior to start up to avoid severe thermal shocks to the pump as the
result of sudden liquid temperature changes. Unless otherwise specified, the temperature of
the case must be within 100
°
F (38
°
C)-150°F (66°C) of the temperature of the liquid to be
pumped at time of start up. Due to the heavy metal sections, the case temperature will lag the
liquid temperature during such changes, and severe thermal stresses and subsequent
misalignment of machined fits may result. It is therefore important to uniformly heat the
pump casing. Top to bottom casing temperature differential should not exceed 75
°
F (24
°
C).
Preheating is accomplished by circulating a small amount of hot fluid through the case by
utilizing vents, drains or bypass from discharge. Preheat pump slowly at a rate not to exceed
50°F (10°C) per hour.
5. Prime pump and ensure suction valve is open.
DO2604-13 - 3-8 -