Flowserve Dual Gas Barrier Seals - Manual (Page 13)

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Dual Gas Barrier Seals - Installation and Mintenance Instructions for Machinery Components
9.5 Remove the setting devices. Save the setting devices and screws.
The machine to take the seal must be earthed in accordance with the appli-
cable regulations for electrical installations (e.g. VDE rules) to conduct away
any electrostatic build-up and so
prevent spark formation.
9.6 Perform steps 6.8 to 6.10.
10. Shut down, disassembly
The equipment can be shut down at any time. Before the mechanical seal can be removed
the equipment must be de-pressurized and drained. Barrier pressure 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 pro-
tective 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 spe-
cifications.
11. System check
Checking of the system, limits itself to monitoring pressure, temperature, leakage and
consumption of barrier fluid.
Routine maintenance of the mechanical seal extends to the monitoring 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 maintenance to the mechani-
cal seal must be easy accessible.