Flowserve Seal Support Reservoir Manual de usuario descargar pdf (Pagina 7)

9. If the system is equipped with a weld pad level gauge the bolts on the cover

should be retorqued to 20 ft/lbs. (Tighten in 5 ft/lb increments starting with

the center bolts and working out.)

10. Connect vent connection to are or vapor recovery system (Plan 52).

Do not open vent valve until reservoir has been lled with buffer uid.

11. Fill reservoir with barrier/buffer uid to the middle of the sight glass.

Gas volume of the system should be at least 25 percent of the reservoir

volume to allow for thermal expansion during operation.

12. Before starting the system, bleed all air from highest point in the system.

13. Connect external pressurization to reservoir on Plan 53A, B, C (dual seal).

A pressure regulator and check valve are required to maintain a constant

pressure on the system. The pressure in the reservoir should be maintained

at least 25 psi (1.7 bar) above the seal cavity pressure.

Make sure reservoir is lled before pressurizing.

Start-Up

1. API Plan 52/ANSI Plan 7352 - open the valve to the vent or are system slowly.

2. API Plan 53A, B, C/ ANSI 7353 - slowly open the valve between reservoir

and external pressurization source. Slowly increase the pressure to avoid

gas ingestion. Check for leaks as unit is being pressurized. Operating

pressure is normally 15 to 25 psig (1 to 1.7 bar) above seal cavity pressure

depending on seal design. The pressure gauge on system can be used to

monitor system pressure.

3. If system is equipped with cooling coils, open the valve to allow water to ow

through coils.

4. The pump can now be commissioned for start-up per the equipment

manufacturer's recommendations and all plant safety and start-up

procedures.

Maintenance

During planned plant shutdowns, it is recommended maintenance practice that the

buffer/barrier uid be drained, reservoir ushed and new uid put in the reservoir.

This will ensure the quality of the buffer/barrier uid used to lubricate the seals and

help remove any particles that may have accumulated in the reservoir.

When changing or cleaning the glass on armored sight gauges (weld pad level

gauge), always install new gaskets and retorque bolts to proper amount. It is also

recommended that the bolts be checked and retorqued prior to rst operation.

They can come loose during shipping and transport.

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Flowserve Seal Support Reservoir Manual de usuario Pagina 7