Flowserve GCX Series Manual do Utilizador descarregar pdf (Página 10)

3 Single Seal Piping and Operational Recommendations

3.1 Install an adequate seal ush system. The GCX requires a clean

cool environment for maximum seal life. With a clean cool product,

use a bypass ush from the pump discharge (Plan 11) or a bypass

ush to the pump suction (Plan 13). With clean hot products

use a bypass ush through a cooler (Plan 21). With abrasive

products or products that are incompatible with the seal, use a ush

from a clean external source (Plan 32). Consult your Flowserve

Representative for assistance with choosing the appropriate ush

system.

3.3 Taps in the gland are quench and drain ports used for uid

quenching, Plan 62. If they are not used, they should be plugged

with pipe plugs.

3.4 Remove lock outs on pump and valves.

3.5 Do not start up the equipment dry to check motor rotation or for any

other reason. Open valves to ood pump with product uid. Ensure

that the seal ush system is operating. Vent air from the casing of

the pump and the seal chamber before start-up.

3.6 Observe the start-up. If the seal runs hot or squeals, check the seal

ush system. Shut down the equipment immediately if the seal

becomes hot or squeals.

4 Operational Recommendations

4.1 Do not exceed corrosion limits. The GCX is designed to resist

corrosion by most chemicals. However, do not expose the GCX

materials of construction to products outside of their corrosion limits.

The GCX assembly drawing lists the materials of construction.

Consult your Flowserve Representative for chemical resistance

recommendations.

4.2 Do not exceed the recommended maximum pressure and speed

limits of 13.8 bar (200 psi) and of 3600 rpm.

4.3 Do not exceed the temperature limit of 204°C (400°F).

4.4 Do not start up or run the GCX dry. Process uid must be in the

pump volute at all times during seal operation.

For special problems encountered during installation, contact your nearest

Flowserve Sales and Service Representative or Authorized Distributor.

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Flowserve GCX Series Manual do Utilizador Página 10