Flowserve SLC Series Interseal - Manual (Page 11)

11
Alignment Key
6.2 Quench out should be connected to plant drain.
6.3 Quench water must flow at all times when pump is in operation.
Note:
Water flow must be regulated to 0.016 - 0.032 liter/sec at 35 kPa maxi-
mum (0.25 - 0.50 gpm at 5 psi maximum).
7 Normal Operation Procedures
The SLC relies on the product pumpage for seal face lubrication since it is typically-
operated without external flush water.
7.1 Equipment Start Up
The equipment cavity must be completely full of liquid before start up.
• Open the discharge washout/bleed valve to release any air that may be
trapped in the piping. Close the valve after a steady stream of liquid flows
from it. If little or no liquid appears, do not start equipment. This means that
part of the piping system is blocking off with solidified product.
• Open suction valve.
• Partially open the discharge valve to ensure that water hammer or
cavitation does not occur at start up.
• After start up, slowly open the discharge valve. This will keep a false head
on the equipment until the lines completely fill.
7.2 Normal Operation
Never allow equipment to run dry during operation, as this will certainly result in pre-
mature seal failure.
• Do not allow equipment to cavitate, as this will shorten seal life.
• Do not induce water hammer in the pipeline, as this can place undo strain
on the seal components.
• Do not allow the seal chamber pressure to drop below 5 psi while equip
ment is in operation as this may prevent lubrication from reaching the seal
faces.
7.3 Equipment Shut Down
All products that will solidify in lines or equipment when idle should be purged from the
system.
• Stop the equipment.
• Close the discharge valve.
• Close the suction valve.
• Open the discharge washout/bleed valve. Close the valve after a steady
stream of clear liquid flows from it.
For special problems encountered during installation, contact your nearest Flowserve
Sales and Service Representative or Authorized Distributor.