Flowserve P-50 Durametallic - Manual (Page 7)

7
3 Operational Recommendations
3.1 Install an adequate seal flush system. The P-50 requires a clean
cool environment for maximum seal life. With a clean cool product
use a bypass flush from the pump discharge (plan 13). With clean
hot product, use a bypass flush through a cooler (plan 21). With
abrasive products or products that are incompatible with the seal,
use a flush from a clean external source (plan 32).
Note: All piping plan designations used in these instructions are from
API 682. For the corresponding ASME B73 piping plan designation,
please add a 73 in front of the referenced piping plan.
3.2 Remove lock outs on pump and valves.
3.3 Do not start up the equipment dry to check motor rotation, etc.
Open valves to flood pump with product fluid. Ensure that the seal
flush system is operating. Vent air from the casing of the pump and
the seal chamber before startup.
3.4 Observe the start-up. If the seal runs hot or squeals, check the
seal flush system. Do not allow the equipment to run for any
extended time if the seal gets hot or squeals.
4 Repair
This product is a precision sealing device. The design and dimension
tolerances are critical to seal performance. Only parts supplied by
Flowserve should be used to repair a seal. To order replacement parts,
refer to the part code and B/M number. A spare backup seal should be
stocked to reduce repair time.
When seals are returned to Flowserve for repair, decontaminate the
seal assembly and include an order marked "Repair or Replace." A
signed certificate of decontamination must be attached. A Material
Safety Data Sheet (MSDS) must be enclosed for any product that
came in contact with the seal. The seal assembly will be inspected and, if
repairable, it will be rebuilt, tested, and returned.