6
4 Operational Recommendations
4.1 Do not start up the equipment dry. Vent air from the casing of
the pump and the seal chamber before startup.
4.2 If soap was used to ease seal installation, flush the seal chamber
with water before startup to prevent rotating face gasket O-ring
slippage and subsequent loss of seal drive.
4.3 Adjust the barrier water flow rate so there is no more than a
11°C (20°F) temperature rise between inlet and outlet temperature.
The barrier outlet water temperature should never exceed 51°C
(120°F). Consult Flowserve if you have any questions.
4.4 If the seal runs hot, above 51°C (120°F) or squeals, shut down the
pump immediately as not to damage the seal. Check to see if the
barrier water supply is working properly. If barrier water system is
working correctly, check the seal housing dimension to ensure the
seal is not over-compressed due to axial dimensional stack up
problems.
For special problems encountered during installation, contact your
nearest Flowserve Sales and Service Representative or Authorized
Distributor.
seal
end view
Suggested Barrier Water Supply System - Plan 53A
Figure 2
drain, normally closed
cooling out
pressure indicator (low)
pressure source,
normally open
outlet
inlet
pressure switch (high)
level switch (high)
level indicator
level switch (low)
cooling in
Reservoir
liquid fill
normally closed
cooling coils
