Flowserve Seal Gard - Manual (Page 7)

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The optional alarm features can also be set to respond to a high or low flow or
both high and low flows as needed. Two alarm probes are required to respond
to both high and low flows. With this arrangement, the low flow alarm indicates
inadequate flow to the seal. The high flow alarm indicates that the inner seal is
leaking seal barrier or buffer fluid into the product. Close the Seal Gard return-
from-seal valve and reset the supply control valve to minimize product dilution
until the seal can be scheduled for repair.
4. Cleaning and Repairs
4.1 To clean the Seal Gard:
• shut down the pump or provide a bypass flush system to the
Flowserve seal.
• close the valve from the flush fluid supply line to Seal Gard.
• relieve any pressure on the Seal Gard.
• remove the threaded cap(s) from the top of the flow tube(s).
• clean the flow tube(s) using soap and water. (Steam and alcohol will
turn the acrylic resin white and make the meter unreadable).
• re-install the threaded cap(s) making sure that the float(s) is in
position.
• open inlet valve to renew flow to the seal
• adust flow control valves as indicated in steps 3.2 or 3.3.
4.2 To repair the Seal Gard:
• shut down the pump or provide a bypass flush system to the
Flowserve seal.
• close the valve from the flush fluid supply line to Seal Gard.
• relieve any pressure on the Seal Gard.
• disconnect pipe connections and remove the Seal Gard from its
mounting.
• remove the threaded cap(s) from the top of the flow tube(s).
• clean the flow tube(s) using soap and water. (Steam and alcohol will
turn the acrylic resin white and make the meter unreadable).
• replace the float(s), valve(s), and O-rings (repair kit available).
• re-install Seal Gard to its mounting and reconnect piping.
• re-install the threaded cap(s) making sure that the float(s) is in
position.
• open inlet valve to renew flow to the seal
• adust flow control valves as indicated in steps 3.2 or 3.3.
A Seal Gard can normally be reconditioned. Return the Seal Gard to Flowserve
Corporation with an order marked "Repair or Replace." It will be inspected and, if
repairable, it will be rebuilt, tested, and returned in its original condition.