Flowserve ISC - Manual (Page 16)

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9. Functional Recommendations
9. Do not exceed corrosion limits. The ISC is designed to resist cor-
rosion by most chemicals. However, do not expose the ISC mate-
rials of construction to products outside of their corrosion limits.
The ISC assembly drawing lists the materials of construction.
Consult Flowserve for chemical resistance recommendations.
9.2 Do not exceed the recommended maximum pressure and speed
limits shown in the ISC brochure.
9.3 Do not exceed the temperature limits of the ISC. The materials
of construction are listed on the ISC assembly drawing. For dual
seals using supply tanks with cooling coils, turn on cooling water
to the supply tank before start-up.
At all running temperatures the product must not come
within 20 K of its evaporating point. Should this not be the
case during certain situations (e.g. machine shutdown, start-
up) forced circulation or adequate cooling of the supply fluid
must be generated to promote heat removal.
Escaping leakage must not form an explosive mixture.
9.4 Do not start up or run the ISC dry. Buffer/barrier fluid must be
in the seal cavity for dual seals at all times during pump running.
Process fluid must be in the pump volute at all times during single
seal running.
For special problems encountered during installation, contact your
nearest Flowserve Sales and Service Representative or Authorized
Distributor.
10. Shut down, Disassembly
The equipment can be shut down at any time. Before the mechanical seal
can be removed the equipment and de-pressurized. Barrier pressure (if
applicable) must be relieved after the equipment has been de-pressurized.
!
Operator must persuade himself before starting disassembling of
mechanical seal that the external of the equipment is cool enough
to be handled without risk.
Product may be released during removal of the mechanical seal. Safety
measures and protective clothing may be required as per the plant’s safety
regulations.
Dismantling of the mechanical seal is only allowed after machine
has been stopped.
Further disassembly of the mechanical seal must be done according to the
supplier’s specifications.
11. System Check
Checking of the system, limits itself to monitoring pressure, temperature,
leakage and consumption of barrier (buffer) fluid, when applicable.
Routine maintenance of the mechanical seal extends to the moni-
toring of the set values for pressure, temperature, and leakage
quantity.
Maintenance to the mechanical seal is only allowed after machine
has been stopped.
The required area for operating the machine or doing mainte-
nance to the mechanical seal must be easy accessible.